emerging · 0.0

Voice AI

Score 22.2 / 100 107 providers 9 APIs Search apis.io →

Providers using this tag (107)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 2 Complete, well-documented, and agent-ready
RegalArtificial IntelligenceAI AgentsContact Center6 APIs77.1VapiArtificial IntelligenceVoice AgentsConversational AI15 APIs73.6
Strong 7 Solid coverage with minor gaps
GridspaceCompanyConversational AIVoice Agents1 API62.0PyannoteAICompanyAi DataSpeech RecognitionSpeaker Diarization2 APIs60.8DialNexaAI AgentsTelephonyLead Qualification2 APIs59.8Suki AIHealthcareAmbient AIClinical Documentation3 APIs57.8ModulateCompanyArtificial IntelligenceSpeech-to-Text11 APIs55.7VOYGRCompanyLocation IntelligencePOI DataData Enrichment1 API54.8ThoughtlyChat AIConversational AIAI Agents1 API54.7
Developing 36 Usable, with meaningful gaps to close
SLNGCompanySpeechVoiceSpeech-to-Text7 APIs53.7ReplicantCompanyContact CenterConversational AICustomer Service2 APIs53.6Observe.AICompanyAi AppsContact CenterConversation Intelligence1 API53.0VoiceGenieCompanyConversational AISales Automation1 API52.7CovalCompanyAI AgentsTesting20 APIs52.2ChatsimpleCompanyAI AgentsConversational AIChatbots2 APIs52.1PhonicCompanyArtificial IntelligenceConversational AI1 API52.1HeyMiloCompanyRecruitingHiringHuman Resources1 API51.0SpeechmaticsSpeech RecognitionSpeech-to-TextTranscriptionReal-Time Transcription2 APIs50.6FixieCompanyConversational AIReal-Time1 API50.3SpekoVoiceSpeech-to-TextText-to-Speech1 API50.3Prosper AICompanyHealthcareRevenue Cycle Management1 API50.1BolnaCompanyArtificial IntelligenceConversational AI1 API49.6Listen LabsCompanyArtificial IntelligenceMarket ResearchCustomer Research2 APIs49.5AquantCompanyArtificial IntelligenceAgentsField Service2 APIs49.0Allo-MediaCompanyAi DataSpeech RecognitionSpeech-to-Text4 APIs48.8PhonelyArtificial IntelligenceVoice AgentsConversational AI2 APIs48.4BluejayCompanyArtificial IntelligenceAI Agents1 API48.3KugelAudioVoiceText-to-SpeechSpeech Synthesis1 API48.1GradiumCompanyAi MlText-to-Speech1 API47.9VeritusCompanyFintechConsumer LendingCollection1 API47.7DeepgramArtificial IntelligenceSpeech-to-TextText-to-SpeechTranscription3 APIs47.6CognigyCompanyConversational AIAgentic AIContact Center1 API47.2DailyReal-TimeWebRTCVideoAudio1 API46.7NeuphonicText-to-SpeechAudioStreaming1 API46.6SanasCompanySpeech AIAccent Translation2 APIs46.4SuperDialCompanyHealthcareRevenue Cycle Management1 API46.4Tadeus APIResearchInterviewsWorkforce2 APIs45.3CartesiaArtificial IntelligenceText-to-SpeechSpeech-to-Text1 API44.8ForethoughtArtificial IntelligenceCustomer-SupportCustomer ServiceGenerative AI2 APIs44.5FiniCompanyArtificial IntelligenceAI AgentsCustomer-Support1 API42.9HappyrobotAI AgentsAgent OrchestrationConversational AI2 APIs42.3PypestreamCompanyConversational AIAgentic AIContact Center7 APIs42.0AvocaCompanyArtificial IntelligenceConversational AI1 API41.7Sarj AI Developer APIVoice AgentsConversational AIArabic AI4 APIs41.5KrispCompanyArtificial IntelligenceSpeech1 API40.2
Thin 16 Limited public surface area
DaptaCompanyAI AgentsConversational AI38.2VocodeVoice AgentsTelephonyConversational AI1 API37.2PolyaiCompanyConversational AICustomer Service1 API35.6Symbl.aiCompanyConversation IntelligenceSpeech-to-Text35.2InfinitusCompanyArtificial IntelligenceHealthcare1 API35.1CovalArtificial IntelligenceAgentsSimulation1 API34.5ai-cousticsCompanyAi MlAudioSpeech Enhancement1 API34.3Liberate InnovationsCompanyInsuranceInsurtechArtificial Intelligence1 API34.3GetVocalCompanyArtificial IntelligenceConversational AI1 API33.7Glia (fka SaleMove)CompanyCustomer ServiceCustomer-SupportDigital Customer Service1 API33.6LiberateCompanyArtificial IntelligenceInsuranceInsurtech1 API33.5RespeecherVoice CloningSpeech to SpeechText-to-Speech1 API33.0Reson8Speech RecognitionSpeech-to-TextASR3 APIs31.2CrestaArtificial IntelligenceContact CenterContact Center AICCaaS1 API30.1QuiqCompanyCustomer ExperienceConversational AIContact Center1 API29.7Samora AICompanyVoice AgentsConversational AI1 API26.2
Emerging 30 Early or largely undocumented
SoundHoundConversational AIMusic RecognitionAudio Intelligence2 APIs25.0BaltoCompanyArtificial IntelligenceContact CenterConversation Intelligence1 API24.9DonnaCompanyArtificial IntelligenceSalesField Sales22.5EliseAICompanyArtificial IntelligenceConversational AIProperty Management21.0RealWearCompanyHardwareWearables19.3MihupCompanyConsumerSpeech Recognition18.8Ellipsis HealthCompanyHealthcareMental HealthArtificial Intelligence18.7GigaCompanyArtificial IntelligenceAI Agents18.5Patientdesk.aiCompanyHealthcareDentalArtificial Intelligence18.5Champ AiCompanyArtificial IntelligenceAI AgentsAutomation18.2BasataCompanyHealthcareArtificial IntelligenceAI Agents17.8RevionCompanyArtificial IntelligenceAutomotiveDealership Service17.1Attuned IntelligenceCompanyArtificial IntelligenceHealthcare16.8EchoLeadsAI voice salesAI Voice Agentscold calling automationAI SDR1 API16.8Slang AiCompanyRestaurantConversational AI16.6ConverseNowCompanyConversational AIRestaurant16.4PolimorphicCompanyGovTechGovernmentArtificial Intelligence16.0CallDeskCompanyConversational AIContact Center15.7Callab AIConversational AITelephonyContact Center1 API14.9Replica StudiosCompanyVoiceText-to-SpeechSpeech to Speech1 API14.7HostieCompanyRestaurantHospitalityConversational AI14.4HousewhisperCompanyReal-EstateArtificial IntelligenceAI Assistant14.0MaiCallCompanyDebt CollectionCollection13.8KnownCompanyConsumerDatingMobile13.5Hippocratic AIHealthcareGenerative AIHealthcare AgentsClinical AI13.0MurphyCompanyFintechArtificial IntelligenceDebt Collection12.1Vocca AiCompanyHealthcareConversational AI12.1MeelaCompanyAi AppsArtificial Intelligence11.6LanceCompanyArtificial IntelligenceAI AgentsHospitality11.3Standard PracticeCompanyHealthcareRevenue Cycle Management11.3
Minimal 16 Almost no public developer surface
MiaCompanyArtificial IntelligenceConversational AI10.8IntellaCompanyArtificial IntelligenceConversational AI10.6Kardome TechnologyCompanySpeech RecognitionAutomotive10.6AivarCompanyAi MlArtificial IntelligenceAI Agents10.2Solda.aiCompanyArtificial IntelligenceSales9.7Level AIArtificial IntelligenceContact CenterCustomer ExperienceConversational Intelligence9.1NeticCompanyArtificial IntelligenceAutonomous AgentsHome Services7.6PraxiPalCompanyHealthcareArtificial Intelligence7.1VerdexCompanyHealthcareClinical DocumentationArtificial Intelligence7.0Fluent.aiCompanySpeech RecognitionEmbedded6.4NumaCompanyVertical AIAutomotiveArtificial Intelligence6.4Presto AutomationRestaurantDrive-ThruAutomation6.4AtextoCompanySpeech RecognitionTranscriptionData Labeling5.0ConverzAICompanyArtificial IntelligenceRecruitingRecruitment Automation5.0TalentplutoCompanyRecruitingHiringTalent5.0WaycoCompanyLegal TechArtificial IntelligenceHealthcare2.3

APIs with this tag (9)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Strong 1 Solid coverage with minor gaps
Voygr Calls APIProgrammatic outbound phone calls executed by an AI voice agent. Submit a task either as a plain-language b...54.8
Developing 3 Usable, with meaningful gaps to close
Bolna Voice AI APIREST API for building and operating conversational voice AI agents — create and manage agents, place outbou...49.6Deepgram Voice Agent APIThe Deepgram Voice Agent API is an end-to-end solution that combines speech-to-text, LLM orchestration, and...47.6Pipecat Cloud (Daily Bots) APIREST API and SDKs for deploying and managing voice AI agents built with the open-source Pipecat framework o...46.7
Thin 3 Limited public surface area
PolyAI Platform APIBuild, run and observe PolyAI voice and chat agents from your own systems. Three REST API families (Agents,...35.6Infinitus Platform APIThe customer-gated Infinitus backend API. Infinitus' own AI Agent Security Guide instructs customers to all...35.1ai-coustics SDKReal-time speech-enhancement SDK (Quail, Rook, Quail VAD, Quail Voice Focus, Tyto) with a JWT token-minting...34.3
Emerging 2 Early or largely undocumented
Houndify Voice AI APIThe Houndify platform provides HTTP and WebSocket APIs that accept text or audio queries and return actiona...25.0Callab AI APICallab AI's REST API, documented at docs.callab.ai/api-reference, is organized around REST principles with ...14.9

Score breakdown

Frequency
56.7
log-scaled weighted occurrences
Breadth
2.9
spread across providers
Quality lift
36.4
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor

Related tags

Conversational AI 51 co-occurrences Contact Center 26 co-occurrences Speech Recognition 18 co-occurrences Voice Agents 14 co-occurrences Telephony 17 co-occurrences Voices 11 co-occurrences Text-to-Speech 13 co-occurrences Speech-to-Text 12 co-occurrences

Where this tag comes from

Provider tag107
Api tag9

Cohort brief

Auto-generated

The 106 providers in the APIs.io catalog tagged Voice AI, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
106
all scored
Mean Kin Score
32.3
+8.4 vs catalog 23.9
Mean Agent Readiness
17.6
+5.6 vs catalog 12
Spread
2.3–77.1
median 34 · σ 18.1
How the 106 split by band
Exemplar 2Strong 7Developing 36Thin 16Emerging 30Minimal 15
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Access Clarity 39.4 26.5 +12.9 106
Developer Ergonomics 33.6 23.4 +10.2 106
Contract Quality 28.4 19.8 +8.6 106
Operational Transparency 19.3 14 +5.3 106
Discoverability 65.7 61.2 +4.5 106
Contract Governance 9.2 6.4 +2.8 106

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 24% 10% +14
MCP server (first-party) 29% 13% +16
Agent Skills 0% 0% 0
OAuth scopes 8% 11% -3
Security 100% 97% +3
Arazzo workflows 4% 2% +2
Governance rules 10% 14% -4

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Regal 77.1
  2. 2 Vapi 73.6
  3. 3 Gridspace 62
  4. 4 PyannoteAI 60.8
  5. 5 DialNexa 59.8
  6. 6 Suki AI 57.8
  7. 7 Modulate 55.7
  8. 8 VOYGR 54.8
  9. 9 Thoughtly 54.7
  10. 10 SLNG 53.7
Top by Agent Readiness
  1. 1 Sarj AI Developer API 62.9
  2. 2 HeyMilo 52.3
  3. 3 Listen Labs 52.2
  4. 4 Regal 52
  5. 5 Happyrobot 51.2
  6. 6 DialNexa 49.9
  7. 7 Prosper AI 46.9
  8. 8 Speko 44.4
  9. 9 Coval 43.6
  10. 10 Aquant 43.5
All 107 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 15 September 2026, across 27661 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

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Tools for tags

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  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
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As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/voice-ai"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/voice-ai/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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