> ## Documentation Index
> Fetch the complete documentation index at: https://usefulai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Best AI Phone Agents in 2026

> We evaluated 15+ AI phone agents on call quality, production controls, integrations, compliance, and pricing across every deployment lane.

<div className="uai-updated-row">Updated June 2, 2026</div>

AI phone agents promise to answer and place calls with a voice AI, handling everything from missed calls to outbound campaigns. The hard part is picking the right lane: production builder, developer infrastructure, SMB receptionist, or enterprise contact center. We evaluated 15+ tools and selected these seven.

## Best AI Phone Agents

<div className="uai-overview-table uai-overview-table--ranked">
  |  # | Tool                                                                                                                                                                                | Best for                       | Type                                                           |
  | -: | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------ | -------------------------------------------------------------- |
  |  1 | <a href="https://www.retellai.com" target="_blank" rel="noreferrer"><img src={"/images/icons/48/retellai.com.png"} alt="" noZoom />Retell AI</a>                                    | Production phone agents        | <span className="uai-badge uai-badge--sky">Developer</span>    |
  |  2 | <a href="https://vapi.ai" target="_blank" rel="noreferrer"><img src={"/images/icons/48/vapi.ai.png"} alt="" noZoom />Vapi</a>                                                       | Developer voice infrastructure | <span className="uai-badge uai-badge--sky">Developer</span>    |
  |  3 | <a href="https://synthflow.ai" target="_blank" rel="noreferrer"><img src={"/images/icons/48/synthflow.ai.png"} alt="" noZoom />Synthflow</a>                                        | No-code agencies and operators | <span className="uai-badge uai-badge--violet">No-code</span>   |
  |  4 | <a href="https://www.bland.ai" target="_blank" rel="noreferrer"><img src={"/images/icons/48/bland.ai.png"} alt="" noZoom />Bland AI</a>                                             | High-volume outbound calling   | <span className="uai-badge uai-badge--sky">Developer</span>    |
  |  5 | <a href="https://poly.ai" target="_blank" rel="noreferrer"><img src={"/images/icons/48/poly.ai.png"} alt="" noZoom />PolyAI</a>                                                     | Enterprise contact centers     | <span className="uai-badge uai-badge--amber">Enterprise</span> |
  |  6 | <a href="https://www.goodcall.com" target="_blank" rel="noreferrer"><img src={"/images/icons/48/goodcall.com.png"} alt="" noZoom />Goodcall</a>                                     | SMB AI receptionist            | <span className="uai-badge uai-badge--violet">No-code</span>   |
  |  7 | <a href="https://elevenlabs.io/conversational-ai" target="_blank" rel="noreferrer"><img src={"/images/icons/48/elevenlabs.io.png"} alt="" noZoom />ElevenLabs Conversational AI</a> | Voice-quality-first agents     | <span className="uai-badge uai-badge--sky">Developer</span>    |
</div>

<label className="uai-overview-more">
  <input type="checkbox" className="uai-overview-toggle" />

  <span className="uai-overview-more-open"><span className="uai-overview-more-count">Show more</span><Icon icon="chevron-down" size={13} /></span>
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</label>

***

<div className="uai-itemcard" role="article">
  <div className="uai-itemcard-head">
    <span className="uai-itemcard-icon">
      <img src="https://mintcdn.com/usefulai/fTqNrv6I1z_YE97n/images/icons/144/retellai.com.png?fit=max&auto=format&n=fTqNrv6I1z_YE97n&q=85&s=af0ca63c515510349604298ebce5dbbc" alt="" noZoom loading="lazy" width="144" height="144" data-path="images/icons/144/retellai.com.png" />
    </span>

    <div className="uai-itemcard-identity">
      <div className="uai-itemcard-row uai-itemcard-row--title">
        ## [Retell AI](https://www.retellai.com)
      </div>

      <div className="uai-itemcard-row">
        <span className="uai-itemcard-note uai-itemcard-note--green">Best for production phone agents</span>
      </div>
    </div>

    <div className="uai-itemcard-end">
      <a href="https://www.retellai.com" target="_blank" rel="noreferrer" aria-label="Visit Retell AI" className="uai-itemcard-cta no-underline">Visit Retell AI</a>
    </div>
  </div>

  <div className="uai-itemcard-body">
    <div className="uai-itemcard-summary">
      Retell is the closest thing to a default for shipping real phone agents. You get a dashboard, telephony, SDKs, testing, and monitoring in one place, plus a call experience that holds up past the demo without forcing you to assemble a custom voice stack. It is opinionated where that helps you ship, and open enough where it counts.
    </div>

    <div className="uai-itemcard-facts" aria-label="Retell AI facts">
      <span>Platforms <span className="uai-itemcard-platforms" aria-label="Web, API"><span title="Web" className="uai-itemcard-pficon uai-itemcard-pficon--globe" /><span title="API" className="uai-itemcard-pficon uai-itemcard-pficon--code" /></span></span>
      <span>Pricing: <strong>Usage</strong> \$0.07+/min <Tooltip tip="Voice AI: $0.07+/min — 20 concurrent calls, fallback, guardrails, PII redaction, email + community support ($0.07-$0.31/min); Enterprise: Custom — Dedicated infrastructure, HIPAA/BAA, SSO, RBAC, 24/7 support, named account manager"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Usage pricing details</span></span></Tooltip></span>
    </div>

    <div className="uai-itemcard-details-group">
      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-retell-ai-strengths" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-retell-ai-strengths"><span>Strengths</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Call feel that survives the first week - turn-taking, interruption handling, and barge-in behave like a real receptionist more often than not.</li>
            <li>Production controls baked in - A/B testing, AI QA, guardrails, alerts, batch testing, versioning, and a concurrency dashboard before you need them.</li>
            <li>Agency-friendly default - enough API depth for technical teams without forcing agencies to manage every provider choice.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-retell-ai-weaknesses" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-retell-ai-weaknesses"><span>Weaknesses</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Pricing math gets stacked - voice infrastructure, telephony, knowledge bases, SMS, and add-ons stack on the per-minute rate, so you can't eyeball the total.</li>
            <li>Less provider freedom than Vapi - opinionated choices about infrastructure and behavior, so the ceiling shows up faster if you want to own every layer.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-retell-ai-who-it-s-for" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-retell-ai-who-it-s-for"><span>Who it's for</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          Choose Retell if you want a production phone agent live this month with room to grow. Skip it if you need full provider control - Vapi handles that better - or a simpler subscription for one business line, where Goodcall is cleaner.
        </div>
      </div>
    </div>
  </div>
</div>

<div className="uai-itemcard" role="article">
  <div className="uai-itemcard-head">
    <span className="uai-itemcard-icon">
      <img src="https://mintcdn.com/usefulai/sV7VJe4pqO2Le0pu/images/icons/144/vapi.ai.png?fit=max&auto=format&n=sV7VJe4pqO2Le0pu&q=85&s=827870c737faaa79227a471ba586adaa" alt="" noZoom loading="lazy" width="144" height="144" data-path="images/icons/144/vapi.ai.png" />
    </span>

    <div className="uai-itemcard-identity">
      <div className="uai-itemcard-row uai-itemcard-row--title">
        ## [Vapi](https://vapi.ai)
      </div>

      <div className="uai-itemcard-row">
        <span className="uai-itemcard-note uai-itemcard-note--green">Best for developer voice infrastructure</span>
      </div>
    </div>

    <div className="uai-itemcard-end">
      <a href="https://vapi.ai" target="_blank" rel="noreferrer" aria-label="Visit Vapi" className="uai-itemcard-cta no-underline">Visit Vapi</a>
    </div>
  </div>

  <div className="uai-itemcard-body">
    <div className="uai-itemcard-summary">
      Vapi is what you reach for when "we'll build it ourselves" is the right answer. You pick the models, voices, telephony, and tools, then wire them together through an API-first platform with a CLI, SDKs, and an MCP-enabled docs server. The flexibility is the point, and the implementation time is what you trade for it.
    </div>

    <div className="uai-itemcard-facts" aria-label="Vapi facts">
      <span>Platforms <span className="uai-itemcard-platforms" aria-label="Web, API, CLI"><span title="Web" className="uai-itemcard-pficon uai-itemcard-pficon--globe" /><span title="API" className="uai-itemcard-pficon uai-itemcard-pficon--code" /><span title="CLI" className="uai-itemcard-pficon uai-itemcard-pficon--terminal" /></span></span>
      <span>Pricing: <strong>Usage</strong> \$0.05+/min <Tooltip tip="Build: $0.05+/min — $0.05/min platform fee plus provider costs, $10 free credits, 10 concurrent calls, email + Discord support; Scale: Custom — Fixed platform fee, volume rates, SOC 2/HIPAA/PCI/SSO, data residency, support SLA (annual)"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Usage pricing details</span></span></Tooltip></span>
    </div>

    <div className="uai-itemcard-details-group">
      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-vapi-strengths" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-vapi-strengths"><span>Strengths</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Real provider freedom - swap models, TTS vendors, telephony, and tools per assistant instead of living inside someone else's defaults.</li>
            <li>Developer-first surface - dashboard, CLI, SDKs, an MCP server, multi-assistant squads, and tool integration that look like infrastructure, not a closed app.</li>
            <li>Bring-your-own keys keep model costs flexible - provider rates pass through, or drop to \$0 with your own API key; meaningful margin at high volume.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-vapi-weaknesses" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-vapi-weaknesses"><span>Weaknesses</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Production reliability takes work - a prototype is fast, but dependable error handling, retries, state, and telephony edge cases are on you.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-vapi-who-it-s-for" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-vapi-who-it-s-for"><span>Who it's for</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          Choose Vapi if engineering ownership is a feature and you want full control over the voice stack. Skip it for a finished business-phone product - Retell ships faster, Synthflow needs less code.
        </div>
      </div>
    </div>
  </div>
</div>

<div className="uai-itemcard" role="article">
  <div className="uai-itemcard-head">
    <span className="uai-itemcard-icon">
      <img src="https://mintcdn.com/usefulai/fTqNrv6I1z_YE97n/images/icons/144/synthflow.ai.png?fit=max&auto=format&n=fTqNrv6I1z_YE97n&q=85&s=34c1ee9dad1e49ed111b7633284d17f7" alt="" noZoom loading="lazy" width="144" height="144" data-path="images/icons/144/synthflow.ai.png" />
    </span>

    <div className="uai-itemcard-identity">
      <div className="uai-itemcard-row uai-itemcard-row--title">
        ## [Synthflow](https://synthflow.ai)
      </div>

      <div className="uai-itemcard-row">
        <span className="uai-itemcard-note uai-itemcard-note--green">Best for no-code agencies and operators</span>
      </div>
    </div>

    <div className="uai-itemcard-end">
      <a href="https://synthflow.ai" target="_blank" rel="noreferrer" aria-label="Visit Synthflow" className="uai-itemcard-cta no-underline">Visit Synthflow</a>
    </div>
  </div>

  <div className="uai-itemcard-body">
    <div className="uai-itemcard-summary">
      Synthflow packages phone agents around business workflows instead of around the voice stack. You build flows visually, connect calendars and CRMs, set up handoffs, and ship client-facing agents without writing code. The white-label and reseller surface makes it the obvious pick if you're running an agency or operator workflow, not building from code.
    </div>

    <div className="uai-itemcard-facts" aria-label="Synthflow facts">
      <span>Platforms <span className="uai-itemcard-platforms" aria-label="Web, API"><span title="Web" className="uai-itemcard-pficon uai-itemcard-pficon--globe" /><span title="API" className="uai-itemcard-pficon uai-itemcard-pficon--code" /></span></span>
      <span>Pricing: <strong>Pay as you go</strong> Usage-based <Tooltip tip="Pay as you go: Free — 5 concurrent calls, BYO or managed Twilio, SOC 2/GDPR/ISO 27001, unlimited agents (usage-based); Enterprise: Custom — 99.99% SLA, native SIP, white-label included, unlimited concurrency, custom rate limits"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Pay as you go pricing details</span></span></Tooltip></span>
    </div>

    <div className="uai-itemcard-details-group">
      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-synthflow-strengths" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-synthflow-strengths"><span>Strengths</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Workflow-first agent design - the builder leans into qualification, scheduling, lead capture, and routing, which maps to what a service business needs.</li>
            <li>Agency-ready packaging - white-labeling at \$2,000/month, PAYG entry pricing, and a reseller toolkit cover an agency selling phone agents to clients.</li>
            <li>Pragmatic telephony options - bring your own Twilio for free or use managed Twilio at \$0.02/minute, with SIP at Enterprise; a clear escalation path.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-synthflow-weaknesses" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-synthflow-weaknesses"><span>Weaknesses</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Less low-level control than developer platforms - to tune model selection, latency, or backend tool execution at depth you'll outgrow the builder; Vapi or Retell go deeper.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-synthflow-who-it-s-for" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-synthflow-who-it-s-for"><span>Who it's for</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          Choose Synthflow if you're an agency or operator deploying client phone agents fast. Skip it if you need deep provider control - go to Vapi - or you're a single small business with one line, where Goodcall is simpler.
        </div>
      </div>
    </div>
  </div>
</div>

<div className="uai-itemcard" role="article">
  <div className="uai-itemcard-head">
    <span className="uai-itemcard-icon">
      <img src="https://mintcdn.com/usefulai/O2NMryn9hetXwNok/images/icons/144/bland.ai.png?fit=max&auto=format&n=O2NMryn9hetXwNok&q=85&s=9b4e216275460d2177775d9d273f4a00" alt="" noZoom loading="lazy" width="144" height="144" data-path="images/icons/144/bland.ai.png" />
    </span>

    <div className="uai-itemcard-identity">
      <div className="uai-itemcard-row uai-itemcard-row--title">
        ## [Bland AI](https://www.bland.ai)
      </div>

      <div className="uai-itemcard-row">
        <span className="uai-itemcard-note uai-itemcard-note--green">Best for high-volume outbound calling</span>
      </div>
    </div>

    <div className="uai-itemcard-end">
      <a href="https://www.bland.ai" target="_blank" rel="noreferrer" aria-label="Visit Bland AI" className="uai-itemcard-cta no-underline">Visit Bland AI</a>
    </div>
  </div>

  <div className="uai-itemcard-body">
    <div className="uai-itemcard-summary">
      Bland is built for the campaign side of voice AI: outbound dialing, batch operations, SIP, and pathway-driven flows. Pricing is a flat per-minute on a tiered plan, which makes volume math easier than provider-pass-through platforms. The recent release trail - testbeds, persona auth, multiplayer pathway editing - shows the team leaning into enterprise operations.
    </div>

    <div className="uai-itemcard-facts" aria-label="Bland AI facts">
      <span>Platforms <span className="uai-itemcard-platforms" aria-label="Web, API"><span title="Web" className="uai-itemcard-pficon uai-itemcard-pficon--globe" /><span title="API" className="uai-itemcard-pficon uai-itemcard-pficon--code" /></span></span>
      <span>Pricing: <strong>Usage</strong> \$0.14/min <Tooltip tip="Start: $0/mo — 10 concurrent calls, 100 calls/day, 1 voice clone, 10 knowledge bases (+ $0.14/min)"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Usage pricing details</span></span></Tooltip></span>
      <span><strong>Paid</strong> \$299–\$499/mo <Tooltip tip="Build: $299/mo — 50 concurrent calls, 2,000 calls/day, 5 voice clones, 50 knowledge bases (+ $0.12/min); Scale: $499/mo — 100 concurrent calls, 5,000 calls/day, 15 voice clones, 100 knowledge bases (+ $0.11/min); Enterprise: Custom — Unlimited concurrency, dedicated infra, BAA/SSO, on-prem/VPC, data residency"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Paid pricing details</span></span></Tooltip></span>
    </div>

    <div className="uai-itemcard-details-group">
      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-bland-ai-strengths" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-bland-ai-strengths"><span>Strengths</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Outbound and scale orientation - concurrency tiers, daily call caps in the thousands, and pathway tooling built for running campaigns at scale.</li>
            <li>Easier per-minute math - bundled LLM, STT, TTS, and telephony rates let you model unit economics; the Build plan at \$0.12/minute is straightforward.</li>
            <li>Recent enterprise-grade tooling - a pathway testbed, SIP wizard, persona authentication, and multiplayer pathway collaboration shipped in the last few months.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-bland-ai-weaknesses" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-bland-ai-weaknesses"><span>Weaknesses</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Not the easiest self-serve default - for a single inbound line and one small workflow it's heavier than Goodcall and less polished than Retell.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-bland-ai-who-it-s-for" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-bland-ai-who-it-s-for"><span>Who it's for</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          Choose Bland if outbound volume, campaign operations, or enterprise call automation is the job. Skip it for a simple inbound receptionist (Goodcall) or fine-grained provider control (Vapi).
        </div>
      </div>
    </div>
  </div>
</div>

<div className="uai-itemcard" role="article">
  <div className="uai-itemcard-head">
    <span className="uai-itemcard-icon">
      <img src="https://mintcdn.com/usefulai/Te6KzZ86-OxPuEC2/images/icons/144/poly.ai.png?fit=max&auto=format&n=Te6KzZ86-OxPuEC2&q=85&s=ddf14f79739eb679fd4077d0696b3e6a" alt="" noZoom loading="lazy" width="144" height="144" data-path="images/icons/144/poly.ai.png" />
    </span>

    <div className="uai-itemcard-identity">
      <div className="uai-itemcard-row uai-itemcard-row--title">
        ## [PolyAI](https://poly.ai)
      </div>

      <div className="uai-itemcard-row">
        <span className="uai-itemcard-note uai-itemcard-note--green">Best for enterprise contact centers</span>
      </div>
    </div>

    <div className="uai-itemcard-end">
      <a href="https://poly.ai" target="_blank" rel="noreferrer" aria-label="Visit PolyAI" className="uai-itemcard-cta no-underline">Visit PolyAI</a>
    </div>
  </div>

  <div className="uai-itemcard-body">
    <div className="uai-itemcard-summary">
      PolyAI is the contact-center pick. It's built around high-volume customer service, multilingual handling, deep CCaaS integrations, and the operational surface a CX organization needs - audit, permissions, latency visualization, CSAT. It's not self-serve and you won't see public per-minute pricing, which is correct for who it serves.
    </div>

    <Frame>
      <img src="https://mintcdn.com/usefulai/gBoXIjPXphp6CTYi/images/tools/phone-agents/polyai.png?fit=max&auto=format&n=gBoXIjPXphp6CTYi&q=85&s=7965ee1fc47a9a37c49bc011fe5c0bdc" alt="PolyAI voice assistant platform" width="1418" height="736" data-path="images/tools/phone-agents/polyai.png" />
    </Frame>

    <div className="uai-itemcard-facts" aria-label="PolyAI facts">
      <span>Platforms <span className="uai-itemcard-platforms" aria-label="Web, API, CLI"><span title="Web" className="uai-itemcard-pficon uai-itemcard-pficon--globe" /><span title="API" className="uai-itemcard-pficon uai-itemcard-pficon--code" /><span title="CLI" className="uai-itemcard-pficon uai-itemcard-pficon--terminal" /></span></span>
      <span>Pricing: <strong>Custom</strong> <Tooltip tip="Voice agent: Custom — Proactive performance improvements, maintenance, 24/7 support, 99.9% SLA, monitoring, upgrades (custom per-minute quote)"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Custom pricing details</span></span></Tooltip></span>
    </div>

    <div className="uai-itemcard-details-group">
      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-polyai-strengths" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-polyai-strengths"><span>Strengths</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Built for messy real-world calls - natural-language handling shines when callers don't speak in scripts, the differentiator for enterprise CX.</li>
            <li>Deep CCaaS integration - Five9, NICE, Genesys, Twilio, Salesforce, ServiceNow, plus an Agents API, so it fits an existing stack instead of replacing it.</li>
            <li>Recent platform modernization - a Git-native Agent Development Kit, Smart Analyst, and multilingual support ship capability legacy IVR-with-AI vendors don't match.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-polyai-weaknesses" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-polyai-weaknesses"><span>Weaknesses</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Wrong fit if you're small - the strengths show at contact-center scale, so answering 50 calls a week means paying for enterprise structure; Goodcall fits better.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-polyai-who-it-s-for" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-polyai-who-it-s-for"><span>Who it's for</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          Choose PolyAI if you're a contact center, CX organization, or large enterprise that needs governed voice AI inside your existing stack. Skip it for self-serve testing, agency client work, or any SMB use case, where Goodcall or Synthflow fit better.
        </div>
      </div>
    </div>
  </div>
</div>

<div className="uai-itemcard" role="article">
  <div className="uai-itemcard-head">
    <span className="uai-itemcard-icon">
      <img src="https://mintcdn.com/usefulai/Ez-pJDkPpztLE7Cr/images/icons/144/goodcall.com.png?fit=max&auto=format&n=Ez-pJDkPpztLE7Cr&q=85&s=5091dbde0124215cd176a5558d987613" alt="" noZoom loading="lazy" width="144" height="144" data-path="images/icons/144/goodcall.com.png" />
    </span>

    <div className="uai-itemcard-identity">
      <div className="uai-itemcard-row uai-itemcard-row--title">
        ## [Goodcall](https://www.goodcall.com)
      </div>

      <div className="uai-itemcard-row">
        <span className="uai-itemcard-note uai-itemcard-note--green">Best for SMB AI receptionist</span>
      </div>
    </div>

    <div className="uai-itemcard-end">
      <a href="https://www.goodcall.com" target="_blank" rel="noreferrer" aria-label="Visit Goodcall" className="uai-itemcard-cta no-underline">Visit Goodcall</a>
    </div>
  </div>

  <div className="uai-itemcard-body">
    <div className="uai-itemcard-summary">
      Goodcall is the AI receptionist for a small business that just wants its phone answered. You point your number at it or take a Goodcall line, write business logic in plain English, connect Zapier, and you're done. No agent framework, no provider stack, no per-minute math.
    </div>

    <div className="uai-itemcard-facts" aria-label="Goodcall facts">
      <span>Platforms <span className="uai-itemcard-platforms" aria-label="Web"><span title="Web" className="uai-itemcard-pficon uai-itemcard-pficon--globe" /></span></span>
      <span>Pricing: <strong>Paid</strong> \$79–\$249/mo <Tooltip tip="Starter: $79/mo — Unlimited minutes, 1 logic flow, 100 unique customers/month ($66/mo annual); Growth: $129/mo — 3 logic flows, 9 team members, 250 unique customers/month ($108/mo annual); Scale: $249/mo — 25 logic flows, 50 team members, 500 unique customers/month ($208/mo annual); Enterprise: Custom — Custom minutes/tokens, API integrations, enterprise security, custom onboarding"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Paid pricing details</span></span></Tooltip></span>
    </div>

    <div className="uai-itemcard-details-group">
      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-goodcall-strengths" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-goodcall-strengths"><span>Strengths</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Predictable pricing without minute anxiety - unlimited minutes and tokens on every plan, so a busy Tuesday doesn't change your bill.</li>
            <li>Genuinely fast setup - bring your own number, write business logic in plain English, and connect Zapier; a non-technical owner can ship in an hour.</li>
            <li>Repeat-caller economics - pricing meters by unique customers per month, not raw minutes, which favors local businesses with mostly existing callers.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-goodcall-weaknesses" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-goodcall-weaknesses"><span>Weaknesses</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Logic depth and integrations stay basic - it handles direct call flows, but branching tool calls, deep CRM control, or product-embedded voice will outgrow it.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-goodcall-who-it-s-for" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-goodcall-who-it-s-for"><span>Who it's for</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          Choose Goodcall if you run a small service business that mostly needs missed-call coverage and simple routing. Skip it for outbound campaigns (Bland) or developer-level control (Retell, Vapi).
        </div>
      </div>
    </div>
  </div>
</div>

<div className="uai-itemcard" role="article">
  <div className="uai-itemcard-head">
    <span className="uai-itemcard-icon">
      <img src="https://mintcdn.com/usefulai/gagbTTg8B6ywPGFE/images/icons/144/elevenlabs.io.png?fit=max&auto=format&n=gagbTTg8B6ywPGFE&q=85&s=9125f7ed780225d05b6dde1d4ed0e78f" alt="" noZoom loading="lazy" width="144" height="144" data-path="images/icons/144/elevenlabs.io.png" />
    </span>

    <div className="uai-itemcard-identity">
      <div className="uai-itemcard-row uai-itemcard-row--title">
        ## [ElevenLabs Conversational AI](https://elevenlabs.io/conversational-ai)
      </div>

      <div className="uai-itemcard-row">
        <span className="uai-itemcard-note uai-itemcard-note--green">Best for voice-quality-first agents</span>
      </div>
    </div>

    <div className="uai-itemcard-end">
      <a href="https://elevenlabs.io/conversational-ai" target="_blank" rel="noreferrer" aria-label="Visit ElevenLabs Conversational AI" className="uai-itemcard-cta no-underline">Visit ElevenLabs</a>
    </div>
  </div>

  <div className="uai-itemcard-body">
    <div className="uai-itemcard-summary">
      ElevenLabs grew up as the voice-quality brand, and the agent product now stands on its own: dashboard builder, knowledge base, tools, telephony, SIP, batch outbound, and SDKs for web, mobile, React Native, Swift, and Kotlin. You'll pick it when caller experience matters more than anything else, and when you can stomach a credit-based pricing model.
    </div>

    <div className="uai-itemcard-facts" aria-label="ElevenLabs Conversational AI facts">
      <span>Platforms <span className="uai-itemcard-platforms" aria-label="Web, API"><span title="Web" className="uai-itemcard-pficon uai-itemcard-pficon--globe" /><span title="API" className="uai-itemcard-pficon uai-itemcard-pficon--code" /></span></span>
      <span>Pricing: <strong>Free</strong> <Tooltip tip="Free: $0 — 10k credits/month, core features"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Free pricing details</span></span></Tooltip></span>
      <span><strong>Individual</strong> \$6–\$99/mo <Tooltip tip="Starter: $6/mo — 30k credits/month; Creator: $22/mo — 121k credits/month; Pro: $99/mo — 600k credits/month"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Individual pricing details</span></span></Tooltip></span>
      <span><strong>Business</strong> \$299–\$990/mo <Tooltip tip="Scale: $299/mo — 1.8M credits/month, 3 seats; Business: $990/mo — 6M credits/month, 10 seats, low-latency TTS from $0.05/min; Enterprise: Custom — Custom credits/seats, SSO, BAA, elevated concurrency, priority support"><span className="uai-itemcard-fact-icon"><Icon icon="circle-info" size={12} color="currentColor" /><span className="sr-only">Business pricing details</span></span></Tooltip></span>
    </div>

    <div className="uai-itemcard-details-group">
      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-elevenlabs-conversational-ai-strengths" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-elevenlabs-conversational-ai-strengths"><span>Strengths</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Voice quality stays the differentiator - caller trust starts before anything is resolved, and ElevenLabs voices still set the bar.</li>
            <li>Broad deployment surface for product teams - web, mobile, React Native, Swift, Kotlin, embeddable widget, SIP, and batch outbound; the strongest SDK story here.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-elevenlabs-conversational-ai-weaknesses" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-elevenlabs-conversational-ai-weaknesses"><span>Weaknesses</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          <ul>
            <li>Telephony edge cases need testing - SIP setup, DTMF recognition, and call-ending behavior come up as friction, so test the unsexy parts before committing.</li>
          </ul>
        </div>
      </div>

      <div className="uai-itemcard-details">
        <input type="checkbox" id="ai-phone-agents-elevenlabs-conversational-ai-who-it-s-for" className="uai-itemcard-details-toggle" />

        <label htmlFor="ai-phone-agents-elevenlabs-conversational-ai-who-it-s-for"><span>Who it's for</span><span className="uai-itemcard-details-chevron" /></label>

        <div className="uai-itemcard-details-body">
          Choose ElevenLabs if caller experience or product-embedded voice is the priority. Skip it if you want flat phone-agent pricing - Retell or Bland - or you're a non-technical small business owner, where Goodcall is simpler.
        </div>
      </div>
    </div>
  </div>
</div>

***

## Selection Guide

<div className="not-prose my-4 flex flex-col gap-1.5 uai-article-prose text-zinc-700 dark:text-zinc-300">
  <span className="flex items-baseline gap-2.5"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span>If you need a production agent live this month, choose <img src="https://mintcdn.com/usefulai/DapqcZBWDcIyQCBz/images/icons/48/retellai.com.png?fit=max&auto=format&n=DapqcZBWDcIyQCBz&q=85&s=67204306aeef253d28bc805f7ef75e5b" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/retellai.com.png" /><a href="https://www.retellai.com" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Retell AI</a></span></span>
  <span className="flex items-baseline gap-2.5"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span>If your team wants full provider control, choose <img src="https://mintcdn.com/usefulai/DapqcZBWDcIyQCBz/images/icons/48/vapi.ai.png?fit=max&auto=format&n=DapqcZBWDcIyQCBz&q=85&s=99e35bb07890bad54f2ead2f197a2903" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/vapi.ai.png" /><a href="https://vapi.ai" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Vapi</a></span></span>
  <span className="flex items-baseline gap-2.5"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span>If you're an agency deploying client phone lines, choose <img src="https://mintcdn.com/usefulai/DapqcZBWDcIyQCBz/images/icons/48/synthflow.ai.png?fit=max&auto=format&n=DapqcZBWDcIyQCBz&q=85&s=93513c20b039654a2d51d369407ba432" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/synthflow.ai.png" /><a href="https://synthflow.ai" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Synthflow</a></span></span>
  <span className="flex items-baseline gap-2.5"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span>If you're running outbound campaigns at scale, choose <img src="https://mintcdn.com/usefulai/DapqcZBWDcIyQCBz/images/icons/48/bland.ai.png?fit=max&auto=format&n=DapqcZBWDcIyQCBz&q=85&s=a6a0306c00dd65a604fb80aaa5738ed2" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/bland.ai.png" /><a href="https://www.bland.ai" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Bland AI</a></span></span>
  <span className="flex items-baseline gap-2.5"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span>If you need an enterprise contact-center deployment, choose <img src="https://mintcdn.com/usefulai/DapqcZBWDcIyQCBz/images/icons/48/poly.ai.png?fit=max&auto=format&n=DapqcZBWDcIyQCBz&q=85&s=b9ad4202b947f5968fe1cb233a29c831" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/poly.ai.png" /><a href="https://poly.ai" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">PolyAI</a></span></span>
  <span className="flex items-baseline gap-2.5"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span>If you run a small service business, choose <img src="https://mintcdn.com/usefulai/DapqcZBWDcIyQCBz/images/icons/48/goodcall.com.png?fit=max&auto=format&n=DapqcZBWDcIyQCBz&q=85&s=75d684d757c04c5a3c230e132f7edb78" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/goodcall.com.png" /><a href="https://www.goodcall.com" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Goodcall</a></span></span>
  <span className="flex items-baseline gap-2.5"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span>If voice quality is the differentiator, choose <img src="https://mintcdn.com/usefulai/gagbTTg8B6ywPGFE/images/icons/48/elevenlabs.io.png?fit=max&auto=format&n=gagbTTg8B6ywPGFE&q=85&s=9ccd00090a9c5a9e6c7cf96aed97349a" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/elevenlabs.io.png" /><a href="https://elevenlabs.io/conversational-ai" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">ElevenLabs</a></span></span>
</div>

***

## How We Evaluated

We evaluated 15+ AI phone agent tools and selected seven for this guide. We don't use affiliate links, accept sponsorships, or take any form of payment from tool makers. Our recommendations are based on official documentation, pricing, release notes, creator hands-on reviews, and patterns we've seen across forum reports - not a controlled call lab.

### Selection Criteria

* **Call feel and reliability.** Turn-taking, interruption handling, latency, and how the agent behaves past the demo, not just inside one.
* **Production operating surface.** Testing, QA, monitoring, versioning, telephony controls, integrations, and the tools needed to operate an agent, not just build one.
* **Pricing transparency and total cost.** Whether you can model real volume from public information, including add-ons, pass-through, and concurrency.
* **Fit for a specific lane.** Whether the tool is honestly the best choice for a defined audience, not just adequate for everyone.

### How We Compared

We compared official feature surfaces, public pricing pages, release-note velocity, integration depth, and developer documentation. We weighed creator hands-on tests and forum reports for friction patterns - the things that show up in production but not on marketing pages. We paid attention to whether issues clustered (a real pattern) or scattered (noise). We treated competitor-authored comparison pages as directional signal only.

***

## What You Need to Know Before Using AI Phone Agent Tools

These tools touch live customer conversations, often with PII, payment information, and recorded audio. A few practical things to handle before you go live.

### Recording Consent and Two-Party States

Most AI phone agents record and transcribe calls by default. Recording consent rules vary by state, and all-party-consent states require every participant to consent before the call is recorded. Build consent language into the opening script, and confirm your provider supports recording/transcription opt-out or retention controls before you go live.

### TCPA and Outbound Compliance

If you run outbound calls, especially marketing, lead follow-up, or appointment confirmations, you're responsible for TCPA compliance: prior express consent for autodialed calls, time-of-day rules, the National Do Not Call Registry, and state-level variants. The platform doesn't carry that risk; you do. Bland, Vapi, and Retell expose call controls, but consent capture and list hygiene are still on you.

### Data Handling and PII

Knowledge bases, transcripts, recordings, and tool integrations can hold PII, health information, or payment details. Check whether your provider offers HIPAA/BAA, Zero Data Retention, SOC 2, data residency, and PII redaction. Vapi lists HIPAA at \$2K/month and Zero Data Retention at \$1K/month; Retell offers PII redaction by default. If your use case touches healthcare or finance, get the BAA before pilots.

***

## Alternatives to Consider

### Other Tools Worth Considering

<ul className="not-prose m-0 my-4 flex list-none flex-col gap-2 p-0">
  * <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/parloa.com.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=23437042899d084cca9c2418fc8acc3b" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/parloa.com.png" /><a href="https://www.parloa.com" target="_blank" rel="noreferrer">Parloa</a>: Consider for governed enterprise agent management and deep CCaaS integration.
  * <img src="https://mintcdn.com/usefulai/XcFilG3Fp3z_o28-/images/icons/48/cognigy.com.png?fit=max&auto=format&n=XcFilG3Fp3z_o28-&q=85&s=c667695dd1cdf3401898ee26dfacfd4a" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/cognigy.com.png" /><a href="https://www.cognigy.com" target="_blank" rel="noreferrer">Cognigy</a>: Consider if voice is one part of a broader enterprise conversation stack.
  * <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/sierra.ai.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=9cf8bde103b13f6241b8087506fe5fd9" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/sierra.ai.png" /><a href="https://sierra.ai" target="_blank" rel="noreferrer">Sierra</a>: Consider for outcome-based enterprise customer service across channels.
  * <img src="https://mintcdn.com/usefulai/ivp-heC-RDy_VFnc/images/icons/48/voiceflow.com.png?fit=max&auto=format&n=ivp-heC-RDy_VFnc&q=85&s=cdd2a5151b43dd129f671ac294f3aaa8" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/voiceflow.com.png" /><a href="https://www.voiceflow.com" target="_blank" rel="noreferrer">Voiceflow</a>: Consider if you design assistants across chat and voice.
  * <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/smith.ai.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=ab949e848dead8c7a3d3f72f0bd2d310" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/smith.ai.png" /><a href="https://smith.ai" target="_blank" rel="noreferrer">Smith.ai</a>: Consider if you want hybrid AI plus human receptionist coverage.
  * <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/slang.ai.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=dda780aaf2384c3e25c5075c6d3a02c9" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/slang.ai.png" /><a href="https://www.slang.ai" target="_blank" rel="noreferrer">Slang.ai</a>: Consider for restaurant reservations, FAQs, and missed-call handling.
  * <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/lindy.ai.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=76e2bfb1a59de115d3fe5729a2d31565" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/lindy.ai.png" /><a href="https://www.lindy.ai" target="_blank" rel="noreferrer">Lindy</a>: Consider if phone calls are one workflow in a broader AI employee.
  * <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/tryair.ai.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=621d02ddd646885100c71a33be62f09e" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/tryair.ai.png" /><a href="https://www.tryair.ai" target="_blank" rel="noreferrer">Air AI</a>: Consider only after checking current maturity, pricing, and deployment proof.
  * <img src="https://mintcdn.com/usefulai/XcFilG3Fp3z_o28-/images/icons/48/gohighlevel.com.png?fit=max&auto=format&n=XcFilG3Fp3z_o28-&q=85&s=e8baad545a014cca38ebe6b3a7810c46" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/gohighlevel.com.png" /><a href="https://www.gohighlevel.com" target="_blank" rel="noreferrer">HighLevel Voice AI</a>: Consider if your agency stack already runs on GoHighLevel.
  * <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/oncehub.com.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=b7d0624252063b6c882c93d5c6a9a422" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/oncehub.com.png" /><a href="https://www.oncehub.com" target="_blank" rel="noreferrer">OnceHub</a>: Consider for scheduling-first inbound booking workflows.
</ul>

### Adjacent Categories

<ul className="not-prose m-0 my-4 flex list-none flex-col gap-2 p-0">
  <li className="flex items-baseline gap-2.5 uai-article-prose text-zinc-700 dark:text-zinc-300"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span><span className="font-semibold">Contact-center suites (CCaaS) with AI voice</span> (<img src="https://mintcdn.com/usefulai/XcFilG3Fp3z_o28-/images/icons/48/genesys.com.png?fit=max&auto=format&n=XcFilG3Fp3z_o28-&q=85&s=555fb6cbf149d2b4344378c9d7a4c283" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/genesys.com.png" /><a href="https://www.genesys.com" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Genesys</a>, <img src="https://mintcdn.com/usefulai/XcFilG3Fp3z_o28-/images/icons/48/five9.com.png?fit=max&auto=format&n=XcFilG3Fp3z_o28-&q=85&s=9ae9cf6a1166c8b995b252abb81c8d02" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/five9.com.png" /><a href="https://www.five9.com" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Five9</a>, <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/talkdesk.com.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=dd99827ac13584ed0c9decf21e314cce" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/talkdesk.com.png" /><a href="https://www.talkdesk.com" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Talkdesk</a>, <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/nice.com.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=758ed48f58003b86de87cc832b6ef2dc" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/nice.com.png" /><a href="https://www.nice.com/products/cxone" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">NICE CXone</a>, <img src="https://mintcdn.com/usefulai/82PG1Up2qz4DPkMj/images/icons/48/salesforce.com.png?fit=max&auto=format&n=82PG1Up2qz4DPkMj&q=85&s=ecb55e44e198ea0f48db7d948dfae739" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/salesforce.com.png" /><a href="https://www.salesforce.com/agentforce/" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Salesforce Agentforce</a>). Out of scope because these are full contact-center platforms where voice agents are one piece. Choose this category if you're standardizing your whole CX stack.</span></li>
  <li className="flex items-baseline gap-2.5 uai-article-prose text-zinc-700 dark:text-zinc-300"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span><span className="font-semibold">Voice infrastructure (TTS/STT/realtime model layers)</span> (<img src="https://mintcdn.com/usefulai/BapVfRsLI8g6LXdP/images/icons/48/cartesia.ai.png?fit=max&auto=format&n=BapVfRsLI8g6LXdP&q=85&s=d3bb56fa2b6768e18e6226caa34c246b" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/cartesia.ai.png" /><a href="https://cartesia.ai" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Cartesia</a>, <img src="https://mintcdn.com/usefulai/BapVfRsLI8g6LXdP/images/icons/48/deepgram.com.png?fit=max&auto=format&n=BapVfRsLI8g6LXdP&q=85&s=9b8fdfc27bdafe609024e95664658b66" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/deepgram.com.png" /><a href="https://deepgram.com" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Deepgram</a>, <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/livekit.io.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=43fc8836643ac8499bbad8c3971d0f2c" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/livekit.io.png" /><a href="https://livekit.io" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">LiveKit</a>, <img src="https://mintcdn.com/usefulai/C5xOaAf4Os-Vu41o/images/icons/48/openai.com.png?fit=max&auto=format&n=C5xOaAf4Os-Vu41o&q=85&s=21ac965dc6ee5751127e6d435043629b" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/openai.com.png" /><a href="https://developers.openai.com/api/docs/guides/realtime" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">OpenAI Realtime</a>). Out of scope because these are components, not phone-call products. Choose this category if your team is building a custom voice stack with per-layer control.</span></li>
  <li className="flex items-baseline gap-2.5 uai-article-prose text-zinc-700 dark:text-zinc-300"><span aria-hidden="true" className="relative -top-0.5 inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-zinc-300 dark:bg-zinc-600" /><span><span className="font-semibold">Human or hybrid receptionist services</span> (<img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/smith.ai.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=ab949e848dead8c7a3d3f72f0bd2d310" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/smith.ai.png" /><a href="https://smith.ai" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Smith.ai</a>, <img src="https://mintcdn.com/usefulai/-BdB1T4cTAq9nNj4/images/icons/48/ruby.com.png?fit=max&auto=format&n=-BdB1T4cTAq9nNj4&q=85&s=1c4bcfe0ce1e4b6f265e6915eb1b49e4" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/ruby.com.png" /><a href="https://www.ruby.com" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Ruby</a>, <img src="https://mintcdn.com/usefulai/XcFilG3Fp3z_o28-/images/icons/48/answerconnect.com.png?fit=max&auto=format&n=XcFilG3Fp3z_o28-&q=85&s=4c6a5af052f7be15c5610f17914723db" alt="" noZoom className="relative -top-px mr-1 inline h-4 w-4 rounded-sm" width="48" height="48" data-path="images/icons/48/answerconnect.com.png" /><a href="https://www.answerconnect.com" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">AnswerConnect</a>). Out of scope because they solve missed calls with people or hybrid workflows, not autonomous AI. Choose this category if caller experience and human judgment matter more than automation depth.</span></li>
</ul>

## Frequently Asked Questions

<AccordionGroup>
  <Accordion title="What are AI phone agents?">
    AI phone agents are software that answers and places phone calls using a voice AI: speech recognition, an LLM, and text-to-speech wired into a telephony stack. They handle inbound reception, outbound campaigns, appointment booking, FAQs, and triage to a human when needed. They differ from chatbots by working over voice and a phone number.
  </Accordion>

  <Accordion title="Can I use my existing phone number?">
    Most platforms support porting your number or forwarding from an existing line. Retell, Bland, Synthflow, and ElevenLabs support SIP and bring-your-own telephony at higher tiers; Goodcall supports forwarding on every plan.
  </Accordion>

  <Accordion title="What happens to my agent and data if I cancel?">
    This varies. Most platforms let you export call logs and transcripts; pathway logic, prompts, and knowledge bases are often locked to the platform. Enterprise plans usually include explicit data-portability terms. Ask before signing: data export format, retention after cancellation, and whether your agent configuration is portable to another provider.
  </Accordion>

  <Accordion title="How is this different from a contact-center platform like Five9 or Genesys?">
    Contact-center suites (CCaaS) are full operations platforms: human agent routing, workforce management, IVR, analytics, and now AI voice agents. The tools here are focused phone-agent products that can integrate into CCaaS. If you need to run hundreds of human agents, choose CCaaS. If you need autonomous AI voice, choose one of these.
  </Accordion>

  <Accordion title="Do I need engineering help to deploy one?">
    Depends on the tool. Goodcall and Synthflow work without code and ship in hours. Retell, Bland, and ElevenLabs are usable without code but reward engineering for complex workflows. Vapi and PolyAI's ADK expect engineering.
  </Accordion>
</AccordionGroup>

<div className="not-prose mt-10 rounded-lg bg-zinc-50/60 px-4 py-3 text-[13px] leading-5 text-zinc-600 dark:bg-white/[0.02] dark:text-zinc-300">We update this guide regularly as new tools launch and existing ones evolve. If you're still unsure, <a href="https://www.retellai.com" target="_blank" rel="noreferrer" className="font-medium text-zinc-950 underline underline-offset-2 dark:text-white">Retell AI</a> is the safest starting point for most teams that need a production phone agent. Questions or suggestions? Let us know.</div>