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Updated Nov 4, 2026 · 55 official sources

Voice AI agent platforms, compared from the source.

Price per minute, latency claims, languages, phone numbers, BYO LLM and voice, interruptions, MCP, HIPAA, SOC 2 and free tiers for 11 platforms. Every cell links to the vendor's own page and says when we checked it.

Open the matrixBrowse platformsLatest changes
Platforms
11
Features
11
Cells verified
105/121
Last checked
Nov 4, 2026

The matrix

11 platforms × 11 features. Filter, require a feature, or sort by coverage.
YesPartialNoUnknownHover a cell for the vendor's wording. Click it to open the official source.
PlatformPrice per minuteLatency claimLanguagesPhone numbers & telephonyBring your own LLMCustom / BYO voiceInterruption handlingTool calling & MCPHIPAA / BAASOC 2Free tier / credits
VapiVapi · Developer platformYes$0.05/min + modelsYes<500ms avgPartialMultilingualYesFree numbers, Twilio, SIPYesCustom LLM serverYesCustom voicesYesStop Speaking PlanYesMCP toolPartial$2,000/mo add-onYesSOC 2Yes$5 credit
Retell AIRetell AI · Developer platformYes$0.07–$0.31/minYes~600msPartialMultilingualYes$10/mo numbers, SIPYesCustom LLMYesClone voice APIYesInterruption sensitivityYesMCPYesHIPAAYesSOC 2 Type IIYes$10 credit
Bland AIBland · Managed platform, own modelsYes$0.14/minUnknownYes40+YesNumbers, BYO TwilioUnknownYesVoice clonesYesinterruption_thresholdPartialCustom toolsYesBAAYesSOC 2 Type I & IIPartial$0 platform fee
Cartesia AgentsCartesia · Managed agents + Line SDKYes$0.03/minUnknownYes44YesCartesia, Twilio, SIPPartialPick from list / Line SDKYesPro Voice CloningYesTurn-taking, interruptionsPartialTool callsYesHIPAAYesSOC 2 Type IIYes$1 credit (~33 min)
ElevenLabs AgentsElevenLabs · Managed platformYes$0.08/min + LLMUnknownYes70+ (TTS)YesTwilio, SIP trunkYesCustom LLMYes10,000+ voices, cloningYesTurn-taking controlsYesMCPPartialEnterprise BAAYesSOC 2Yes15 min/mo
SynthflowSynthflow · Enterprise no-code platformNoAnnual contractPartialSub-100ms telephonyYes~33YesNumbers, Twilio, SIPPartialOpenAI key (Enterprise)UnknownYesInterruption settingsPartialCustom ActionsYesHIPAA + BAAYesSOC 2 Type 2NoNone
OpenAI Realtime APIOpenAI · Speech-to-speech model APIPartialPer tokenUnknownUnknownYesSIPNoSingle modelPartialCustom voices (eligible)YesVAD + truncationYesRemote MCPPartialBAA (by agreement)UnknownUnknown
Deepgram Voice Agent APIDeepgram · Voice agent APIYes$0.075/minUnknownPartialSTT 60+PartialTwilio guideYesBYO LLMYesBYO TTSYesBuilt inPartialFunction callingPartialEnterprise BAAYesSOC 2 Type 1 & 2Yes$200 credit
LiveKit AgentsLiveKit · Open-source framework + cloudYes$0.01/min overageYes100ms networkPartialDepends on pluginsYesNumbers, SIPYesAny LLM pluginYesAny TTS pluginYesAdaptive interruptionsYesMCP clientYesHIPAAYesSOC 2 Type IIYes1,000 min/mo
UltravoxUltravox · Speech-native model + platformYes$0.05/minUnknownPartial15 (changelog)YesTwilio, Telnyx, Plivo, SIPUnknownYesCloning + ExternalVoiceYesminimumInterruptionDurationPartialCustom toolsUnknownUnknownYes30 free minutes
VaaniVaani · Developer platform (India-first)Yes₹1/min + componentsYesp90 ~450msPartialAuto-switchYesNumbers ₹600/moYesBYOLUnknownYesTurn-takingYesMCPPartialEnterpriseUnknownPartialStart free

Key findings

All updates →

Price

Cartesia halved its agent price to $0.03/min

Cartesia's pricing page lists Managed Agents at $0.03/min, marked "Previously $0.06". That's the lowest headline per-minute rate among the managed platforms here (Vapi and Ultravox list $0.05). LiveKit's $0.01/min is an overage rate on top of its plans.

Source

Coverage by feature

Share of platforms with verified Yes (solid) or Partial (light)

Price per minute9/11Latency claim4/11Languages4/11Phone numbers & telephony10/11Bring your own LLM6/11Custom / BYO voice8/11Interruption handling11/11Tool calling & MCP6/11HIPAA / BAA5/11SOC 28/11Free tier / credits7/11

Latest updates

RSS
  1. changelog

    Tracker launched with 11 voice agent platforms

    First release: 11 platforms × 11 features, every cell linked to an official page checked on launch day.

  2. changelog

    Cartesia halves its managed-agent price to $0.03/min

    Cartesia's pricing page lists Managed Agents at $0.03/min, marked "Previously $0.06".

    Source

  3. coverage

    11 platforms tracked across 11 features

    105 of 121 cells are verified against official vendor pages and 16 are marked unknown. The most widely confirmed feature is Interruption handling (11 of 11).

Features explained

All features →
Price per minutePublished platform price per minute. Yes = a per-minute rate is published. Partial = priced another way (tokens, plans) so per-minute cost depends on usage. No = no public rate.9 of 11 yesLatency claimA latency figure the vendor publishes on an official page. These are vendor claims, not our measurements.4 of 11 yesLanguagesHow many languages agents can speak, as stated by the vendor. Partial = multilingual is documented but no count is published.4 of 11 yesPhone numbers & telephonyBuy numbers in-platform or connect Twilio/SIP to take and make real phone calls.10 of 11 yesBring your own LLMUse your own model or your own server as the agent's brain. Partial = choose from a provider list or enterprise-only key.6 of 11 yesCustom / BYO voiceClone a voice, or plug in a third-party TTS voice.8 of 11 yesInterruption handlingDocumented barge-in, turn-taking or interruption-sensitivity controls.11 of 11 yesTool calling & MCPYes = agents can call MCP servers. Partial = custom tool/function calling but no agent-side MCP documented.6 of 11 yesHIPAA / BAAVendor states HIPAA compliance or signs a BAA. Partial = only on enterprise or as a paid add-on.5 of 11 yesSOC 2Vendor states a SOC 2 report or certification.8 of 11 yesFree tier / creditsFree minutes or credits to try the platform without paying.7 of 11 yes

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