V

Vapi

Sells a developer platform and API for building, deploying and monitoring AI voice agents that make and answer phone and web calls, billed per minute.

Supplied by: Cartesia

StageEarly-stage

Founded2020

HeadquartersSan Francisco, USA

StatusPrivate

Products

Selected offerings — the AI products recorded here, not the vendor's full catalogue.

• Vapi Agent platform Sold on its own

  Developer platform and API for building voice agents that handle phone and web calls: configure the voice, model and telephony, then test, deploy and monitor them.

Inside Vapi

• Composer AI agent Included with the parent Freely available

  Composer builds and configures voice AI agents through natural conversation.

Closest alternatives 2

BABland AIEarly-stageBland's own comparison page sets Bland against Vapi as a voice AI platform for building phone agents.2 of 4 capabilitiesShared product typeSame scale bandSourced competitorBuild and run AI agentsCompareRARetell AIUndisclosedRetell AI's own comparison page positions Retell's voice agents against Vapi for building phone agents.3 of 4 capabilitiesShared product typeSourced competitorBuild and run AI agentsCompare

Similar products 26

How this list is ranked ↗

SSynthflowEarly-stageVapi and Synthflow Voice AI Agents both list voice agent; scale not recorded for either.2 of 4 capabilitiesShared product typeComparePPolyAIUndisclosedVapi and Dialog Studio both list voice agent; scale not recorded for either.3 of 4 capabilitiesShared product typeCompareSASoundHound AIPublicVapi and OASYS both list voice agent; Vapi's scale not recorded.2 of 4 capabilitiesShared product typeCompareCCerencePublicVapi and Mobile Work Agent both list voice agent; Vapi's scale not recorded.3 of 4 capabilitiesShared product typeCompareRRibbonEarly-stageVapi and Ribbon API both list voice agent; scale not recorded for either.1 of 4 capabilitiesShared product typeCompareCCognigyAcquiredVapi and Cognigy.AI both list voice agent; Vapi's scale not recorded; Cognigy is acquired, with no independent scale.4 of 4 capabilitiesShared product typeCompareLLivePersonAcquiredVapi and Conversational Cloud both list voice agent; Vapi's scale not recorded; LivePerson is acquired, with no independent scale.3 of 4 capabilitiesShared product typeCompareEElevenLabsLate-stageVapi and ElevenLabs Agents both list voice agent; Vapi's scale not recorded.2 of 4 capabilitiesShared product typeCompareTTwilioPublicVapi and Twilio Agent Connect both list voice agent; Vapi's scale not recorded; ships API service, application and 3 more rather than the same layer.3 of 4 capabilitiesDifferent layerCompareFForethoughtAcquiredVapi and Forethought Voice both list voice agent; Vapi's scale not recorded; Forethought is acquired, with no independent scale.3 of 4 capabilitiesShared product typeCompareRRunwayLate-stageOverlaps on evaluation and observability, voice agent and workflow automation; Vapi's scale not recorded.3 of 4 capabilitiesShared product typeCompareIAInworld AIUndisclosedVapi and Realtime API both list voice agent; scale not recorded for either; ships API service, infrastructure service and 2 more rather than the same layer.1 of 4 capabilitiesDifferent layerCompareRRasaEarly-stageVapi and Rasa Platform both list voice agent; same layer and the same scale band (early-stage private).2 of 4 capabilitiesShared product typeSame scale bandCompareLLListen LabsLate-stageVapi and Listen both list voice agent; scale not recorded for either; ships application rather than the same layer.1 of 4 capabilitiesDifferent layerCompareFRFurhat RoboticsUndisclosedVapi and FurhatAI both list voice agent; scale not recorded for either; ships platform and robot rather than the same layer.1 of 4 capabilitiesDifferent layerCompareASAI ScreenrUndisclosedVapi and AI Screenr both list voice agent; scale not recorded for either; ships application rather than the same layer.1 of 4 capabilitiesDifferent layerCompareSSpeakLate-stageVapi and Speak for Business both list voice agent; Vapi's scale not recorded; ships application rather than the same layer.1 of 4 capabilitiesDifferent layerCompareRRespeecherEarly-stageVapi and Respeecher Space both list voice agent; scale not recorded for either; ships API service and application rather than the same layer.1 of 4 capabilitiesDifferent layerCompareSCSpanish ChatUndisclosedVapi and Maya both list voice agent; scale not recorded for either; ships application rather than the same layer.1 of 4 capabilitiesDifferent layerCompareXXiao-iPublicVapi and Xiao-i cognitive intelligence platform both list voice agent; Vapi's scale not recorded; Xiao-i's scale not comparable: only a revenue estimate, no market cap or valuation; ships application and platform rather than the same layer.1 of 4 capabilitiesDifferent layerCompareYYandexPublicVapi and Yandex SpeechKit both list voice agent; Vapi's scale not recorded; ships API service, application and 2 more rather than the same layer.2 of 4 capabilitiesDifferent layerCompareDDuolingoPublicVapi and Duolingo Max both list voice agent; Vapi's scale not recorded; ships application rather than the same layer.1 of 4 capabilitiesDifferent layerCompareAApplePublicVapi and Siri AI both list voice agent; Vapi's scale not recorded; ships application and developer tool rather than the same layer.1 of 4 capabilitiesDifferent layerCompareTATalkio AIUndisclosedVapi and Talkio AI both list voice agent; scale not recorded for either; ships application rather than the same layer.1 of 4 capabilitiesDifferent layerCompareDDeepgramLate-stageVapi and Deepgram Voice Agent API both list voice agent; Vapi's scale not recorded; ships API service rather than the same layer.2 of 4 capabilitiesDifferent layerCompareAAssemblyAILate-stageVapi and AssemblyAI Voice Agent API both list voice agent; scale not recorded for either; ships API service and application rather than the same layer.1 of 4 capabilitiesDifferent layerCompare

Closest alternatives are pairs a vendor page itself compares. Similar products are matched from what each product does; nothing in that group is asserted as a rivalry.

Sources

Stage, from total funding

News reporting · 12 May 2026

TechCrunch, 2026-05-12: the Series B round "bringing Vapi’s total funding to $72 million".

Valuation

Not found · 7 Oct 2026

No valuation is stated on https://vapi.ai/, /pricing, /blog or the Y Combinator profile.

Founded

Company disclosure · 7 Oct 2026

Company's own Y Combinator profile: "Founded: 2020", Winter 2021 cohort. The company launched as Superpowered (a meeting-notes app) and moved to the Vapi voice API in 2023; 2020 is the year the profile gives.

Public listing

Company disclosure · 7 Oct 2026

Private company: Terms of Service name Vapi Inc., a Delaware corporation; Y Combinator-backed; no public filing found.

Description

Company disclosure · 7 Oct 2026

Homepage: "Voice agents for builders ... Build, deploy, and improve voice agents as fast as you ship."

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