established · -1.4 market domain

Text-to-Speech

Score 24.8 / 100 84 providers +24 via APIs 72 APIs Search apis.io →
Business capabilities this tag reaches
AI Model Services 6 Content Origination & Production Management 1
Variants seen in the corpus: Text to SpeechTTS

Providers using this tag (84)

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

Exemplar 3 Complete, well-documented, and agent-ready
Google Cloud Text-To-SpeechAudioGoogle CloudMachine LearningSpeech Synthesis4 APIs68.6ElevenLabsArtificial IntelligenceSpeech-to-TextVoice12 APIs83.2Amazon PollyArtificial IntelligenceAmazon Web ServicesMachine LearningSpeech Synthesis5 APIs73.1
Strong 12 Solid coverage with minor gaps
deapi-aiArtificial IntelligenceGenerative AIOpen SourceImage Generation2 APIs65.8SLNGCompanySpeechVoiceSpeech-to-Text7 APIs62.6SpekoVoiceVoice AISpeech-to-Text1 API59.0KugelAudioVoiceSpeech SynthesisVoice AI1 API58.2SarvamCompanyArtificial IntelligenceMachine LearningSpeech-to-Text1 API56.2Google GeminiAI AgentsArtificial IntelligenceCode GenerationEmbeddings4 APIs61.7AutoContent APIArtificial IntelligenceAudioContent GenerationPodcasts3 APIs61.3ActionpowerSpeech RecognitionSpeech-to-TextNatural Language Processing1 API58.9Venice.aiCompanyArtificial IntelligenceLLMImage Generation1 API58.0CaptionsCompanyVideoArtificial IntelligenceVideo Editing2 APIs55.7BlumaCompanyArtificial IntelligenceVideoVideo Generation2 APIs55.5StepFunArtificial IntelligenceLLMMulti-ModalChat Completions12 APIs54.7
Developing 20 Usable, with meaningful gaps to close
GradiumCompanyArtificial IntelligenceVoice AI1 API54.2DeepdubCompanyVoiceDubbing2 APIs49.5DeepgramArtificial IntelligenceSpeech-to-TextTranscription1 API47.7FreeTTSSpeech SynthesisAI-voiceAudio1 API43.3MirageCompanyArtificial IntelligenceVideoVideo Generation1 API52.7Sarj AI Developer APIVoice AIVoice AgentsConversational AIArabic AI4 APIs52.7PuppetryCompanyArtificial IntelligenceVideo1 API50.8HeyGenArtificial IntelligenceGenerative AIVideoAvatars1 API49.6useapi.netCompanyArtificial IntelligenceGenerative AIVideo Generation2 APIs48.2Moore ThreadsCompanyGPUArtificial IntelligenceMachine Learning4 APIs48.1NuanceCompanySpeech RecognitionConversational AINatural Language Understanding1 API48.0GlioCompanyArtificial IntelligenceMachine LearningMedia Generation1 API45.6KotobaCompanyArtificial IntelligenceMachine LearningVoice4 APIs44.7APIMartCompanyArtificial IntelligenceLLMAI Gateway1 API44.6SpeechmaticsSpeech RecognitionSpeech-to-TextTranscriptionReal-Time Transcription2 APIs44.2Ex-HumanCompanyArtificial IntelligenceConversational AIAI Companion1 API43.5UnisoundCompanyArtificial IntelligenceSpeech Recognition3 APIs42.7FlowSpeechCompanyArtificial IntelligenceVoice1 API42.0FineVoice (Fineshare)CompanyArtificial IntelligenceVoice7 APIs41.8ConvaiArtificial IntelligenceConversational AICharactersNPCs10 APIs41.2
Thin 30 Limited public surface area
EasyVoiceArtificial IntelligenceVoiceUnited Arab Emirates2 APIs37.9Smallest AIArtificial IntelligenceVoiceReal-Time1 API37.6CartesiaArtificial IntelligenceVoice AISpeech-to-Text1 API36.5Kalpa LabsCompanySpeechVoice1 API35.8Unreal SpeechSpeech SynthesisAudioVoice1 API35.3NeuphonicVoice AIAudioStreaming1 API35.2WellSaid LabsArtificial IntelligenceVoiceAudio1 API34.5ListnrArtificial IntelligenceVoiceSpeech Synthesis1 API34.4LMNTVoice SynthesisVoice CloningAudio Streaming1 API34.2Fish AudioVoiceSpeech-to-TextVoice Cloning1 API33.1NarakeetVoiceAudioVideo1 API32.4Resemble AIArtificial IntelligenceVoiceVoice Cloning1 API31.6Camb.AIArtificial IntelligenceDubbingTranslation1 API29.2MurfArtificial IntelligenceVoiceVoiceover1 API28.3OddcastCompanySpeech SynthesisAvatars2 APIs27.4PodcastleArtificial IntelligenceAudioVoice Cloning1 API27.0SpeechifyArtificial IntelligenceVoiceSpeech Synthesis1 API26.2CocuyoCompanyArtificial IntelligenceGenerative AIImage Generation1 API38.3Ditto AudioVoice PluginsAudiobooksNeural Voice1 API38.3Hailuo AI / MiniMaxVideo GenerationAI VideoGenerative AIImage-to-Video1 API36.1HouroneCompanyArtificial IntelligenceVideoVideo Generation1 API35.4PolyaiCompanyConversational AIVoice AICustomer Service1 API35.1AllmodelsCompanyVoice AISpeech-to-Text7 APIs35.0101 SoundboardsAudiosoundboardFree1 API34.4WondercraftArtificial IntelligenceAudioPodcasts1 API34.0SunoArtificial IntelligenceMusic GenerationAudioGenerative1 API33.7aiOlaSpeech RecognitionSpeech-to-TextVoice AI3 APIs33.3ImaginodeArtificial IntelligenceImage GenerationVideo Generation2 APIs29.0UberduckArtificial IntelligenceVoiceVoice Cloning1 API28.6CreatifyAI AvatarsVideo GenerationAI VideoGenerative AI1 API26.4
Emerging 17 Early or largely undocumented
LOVO AIArtificial IntelligenceVoice GenerationVoice Cloning1 API25.0RespeecherVoice AIVoice CloningSpeech to Speech1 API23.5MihupCompanyConsumerVoice AISpeech Recognition20.6MiraiCompanyArtificial IntelligenceOn-Device AIInference1 API19.6RimeArtificial IntelligenceVoiceReal-Time1 API18.3ReadSpeakerSpeechAudioVoice1 API14.2Replica StudiosCompanyVoiceSpeech to Speech1 API12.6GiggyArtificial IntelligenceVoiceSpeech1 API25.0YouartCompanyArtificial IntelligenceGenerative AIImage Generation1 API22.9Wit.AICompanyNatural Language ProcessingSpeech RecognitionSpeech-to-Text1 API22.5lazybird-appCompanyArtificial IntelligenceVoiceover1 API22.4EverlitAudioVideoSocialPodcasts2 APIs20.7AnyvoiceArtificial IntelligenceVoiceSpeech Synthesis17.7Useful SensorsCompanyArtificial IntelligenceSpeech-to-Text15.3PinokioAI LauncherAI BrowserLocal AIOpen Source14.0InstareadCompanyAudioPublishing13.1HumanPal.ioArtificial IntelligenceContent GenerationMarketing12.0
Minimal 2 Almost no public developer surface
SonanticVoiceEmotive AIAcquired2.3PlayHTVoiceVoice CloningVoice Agents1 API0.0

APIs with this tag (72)

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 →

Exemplar 4 Complete, well-documented, and agent-ready
elevenlabs Text to Speech APIEndpoints for converting text into speech audio with configurable voice, model, and output format settings.83.2Dify Audio APIText-to-Speech and Speech-to-Text operations. 2 operation(s) from the Dify Service API.78.8Adobe Suite Text To Speech APIEndpoints for text-to-speech operations.75.9OCI AI Speech APIAI service for converting audio and media files to accurate text transcriptions in JSON and SRT formats usi...70.4
Strong 11 Solid coverage with minor gaps
Eden AI Text To Speech APIThe Text To Speech API from Eden AI — 1 operation(s) for text to speech.64.2Airia Text To Speech APIThe Text To Speech API from Airia — 2 operation(s) for text to speech.63.6AIMLAPI Tts APIThe Tts API from AIMLAPI — 1 operation(s) for tts.62.6SAKURA internet Tts APIThe Tts API from SAKURA internet — 2 operation(s) for tts.62.6Azure AI Speech APISpeech-to-text, text-to-speech, speech translation, and speaker recognition.62.4NVIDIA NIM TTS APIText-to-speech synthesis59.7Sonetel Tts APIThe Tts API from Sonetel — 2 operation(s) for tts.59.0Actionpower TTS APIThe TTS API from Actionpower — 1 operation(s) for tts.58.9KugelAudio Text to Speech APIThe Text to Speech API from KugelAudio — 1 operation(s) for text to speech.58.2Sarvam Text To Speech APIThe Text To Speech API from Sarvam — 2 operation(s) for text to speech.56.2StepFun Audio APISpeech synthesis (TTS), voice cloning with preview, official voice catalog, audio transcription, and file-b...54.7
Developing 17 Usable, with meaningful gaps to close
Gradium TTS APIText-to-Speech endpoints for converting text to audio54.2Runway Text To Speech APISynthesize speech audio from text.54.0ELBO AI, INC Text to Speech APIThe Text to Speech API from ELBO AI, INC — 1 operation(s) for text to speech.50.8HeyGen APIThe HeyGen REST API exposes video generation, avatar management, text-to-speech (Starfish), video translati...49.6Deepdub TTS APIThe TTS API from Deepdub — 1 operation(s) for tts.49.5Moore Threads AIBook Text-to-Speech APIHTTP and WebSocket speech synthesis. A non-streaming POST /api/v1/tts/generate returns a complete wav/mp3 f...48.1Nuance Mix TTSaaS gRPC APIText-to-Speech as a Service — turn text into synthesized speech (including neural voices) over a gRPC Synth...48.0Pryon Text To Speech APIThe Text To Speech API from Pryon — 1 operation(s) for text to speech.47.9Speechmatics Text-to-Speech APIREST API for converting text to natural-sounding speech with multiple voice options and language support.44.2Divinci AI API APIRESTful API for managing AI releases, RAG knowledge bases, fine-tuning, transcripts, and more. Authenticate...44.1SK Telecom Tts APIThe Tts API from SK Telecom — 1 operation(s) for tts.43.8Ex-Human Text to Speech APIThe Text to Speech API from Ex-Human — 1 operation(s) for text to speech.43.5FreeTTS REST APIREST/JSON API for text-to-speech synthesis, audio and SRT subtitle download, and voice listing. Uses x-api-...43.3Unisound AI Open Platform Speech WebAPIWebSocket speech APIs on the Unisound AI Open Platform: one-sentence speech recognition (Mandarin, Cantones...42.7Unisound Token Hub APIMulti-modal MaaS API for Unisound U2 models: OpenAI-compatible chat completions and Anthropic-compatible me...42.7FlowSpeech Tts APIThe Tts API from FlowSpeech — 3 operation(s) for tts.42.0Convai TTS APIThe TTS API from Convai — 3 operation(s) for tts.41.2
Thin 25 Limited public surface area
Smallest AI Text to Speech APISynthesize speech from text.37.6Creed Tts APIThe tts API from Creed — 2 operation(s) for tts.36.8Cartesia Text-to-Speech APISingle-shot and streamed speech generation over plain HTTP.36.5Cartesia TTS WebSocket APIBidirectional, multiplexed WebSocket at wss://api.cartesia.ai/tts/websocket for realtime speech generation....36.5Hailuo AI / MiniMax Text to Speech APISpeech synthesis (T2A v2).36.1Neuphonic TTS WebSocket APIWebSocket endpoint for continuous, low-latency text-to-speech streaming. Enables real-time voice synthesis ...35.2AI Workstation Tts APIThe tts API from AI Workstation — 1 operation(s) for tts.35.0WellSaid Labs Text-to-Speech APIRender text to speech as clips or audio streams.34.5101soundboards TTS APIFree Text‑to‑Speech API providing up to ~60 phrases per hour, with bearer token authentication. See the doc...34.4LiveKit Agents APIFramework and runtime for voice / multimodal AI agents that join LiveKit rooms; integrates with LLM, STT, a...34.3DeepInfra Text to Speech APIElevenLabs-compatible TTS endpoints and voice management.33.5aiOla Text to Speech APILow-latency speech synthesis with multi-language, multi-voice support and jargon-pronunciation conditioning...33.3Fish Audio APIThe Fish Audio API provides RESTful access to text-to-speech, speech-to-text, voice cloning, and voice mana...33.1Narakeet Text to Speech APIBuild narrated audio (MP3, M4A, WAV) from text, SubRip, or WebVTT input.32.4Inworld AI TTS APIText-to-Speech synthesis30.6Inworld Text-to-Speech APITTS-2 and TTS-1.5 (Max/Mini) models for character voice synthesis. Priced per 1M characters with plan-tier ...30.6Dhamma.Gift Tts APIОзвучка (Voice API) — api.dhamma.gift30.1Hume AI Tts APIThe Tts API from Hume AI — 6 operation(s) for tts.29.6Imaginode MCP ServerHosted MCP server (Streamable HTTP transport) exposing four tools: list_models, generate_image, generate_vi...29.0Imaginode REST APIREST API to list models and launch/track image and video generations. Endpoints: GET /api/models (unauthent...29.0Uberduck Text-to-Speech APISynthesize speech from text using a chosen voice and model.28.6SitePal Avatar APISitePal is Oddcast's AI avatar platform. Speaking characters are embedded on a web page or app and controll...27.4Vocalware Text-to-Speech APIVocalware is Oddcast's cloud text-to-speech service. It exposes a pay-as-you-go HTTP/REST API (suitable for...27.4Podcastle Text to Speech APISynthesize speech from text in batch, streaming, or with word timestamps.27.0Creatify Text-to-Speech APIGenerate voiceovers from text.26.4
Emerging 12 Early or largely undocumented
LOVO AI Text-to-Speech APIConvert text to speech synchronously or asynchronously and retrieve job results.25.0Respeecher Space Real-Time TTS APILow-latency real-time text-to-speech that begins streaming audio in under 200ms via three transports - one-...23.5Respeecher Tts APIThe tts API from Respeecher — 1 operation(s) for tts.23.5CitiConnect APICitiConnect is the corporate treasury and trade integration channel within Citi's Treasury and Trade Soluti...22.8CitiConnect FX (Real-Time FX) APIThe CitiConnect FX API provides real-time foreign-exchange information and execution for corporate treasury...22.8CitiConnect Statements and Reporting APIThe CitiConnect Statements and Reporting API delivers self-service reports, account statements, intraday an...22.8CitiConnect WorldLink Payment Services APIThe CitiConnect WorldLink Payment Services API delivers cross-border, multi-currency payment capabilities w...22.8Everlit REST APIEverlit markets a REST API for connecting a custom CMS or platform that has no native integration — "our RE...20.7IBM Watson Text to SpeechConvert written text to natural-sounding audio in a variety of languages and voices. The service synthesize...18.5Rime TTS APIRealtime text-to-speech API supporting streaming HTTP, WebSocket, and SSE delivery for Arcana and Mist mode...18.3ReadSpeaker Speech Cloud APIA cloud-based text-to-speech API. When using the API from within your software or application, you simply s...14.2Replica APIReplica API v2 (OpenAPI 3.0.0) — REST API for AI text-to-speech, speech-to-speech, and voice-library operat...12.6
Minimal 3 Almost no public developer surface
Naver Cloud CLOVA Speech APICLOVA Speech provides Korean-first speech-to-text (STT) and Korean speech synthesis (TTS / Premium Voice) A...10.6PlayAI Text-to-Speech APIThe PlayAI Text-to-Speech API converts text into natural, human-like speech using the PlayDialog 1.0, Dialo...0.0PlayHT TTS APIText-to-speech generation, streaming, and async jobs.0.0

Companies reaching this through an API (24)

These companies publish an API, specification or operation carrying “Text-to-Speech” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Adobe Suite AI Workstation AIMLAPI Airia Citigroup Creed DeepInfra Dhamma.Gift Dify Divinci Eden AI Hume AI IBM Watson Inworld AI LiveKit Microsoft Cognitive Services Naver NVIDIA NIM Oracle Pryon Runway SAKURA internet SK Telecom Sonetel

Score breakdown

Frequency
57.7
log-scaled weighted occurrences
Breadth
1.1
spread across providers
Quality lift
37.9
mean composite of providers using it
Cohesion
17.1
strength of nearest seed neighbor

Where this tag sits

Voice AI broader Voice broader Speech Synthesis 13 providers

Related tags

Voice Cloning 20 co-occurrences Speech Synthesis 16 co-occurrences Voice 57 co-occurrences Speech-to-Text 21 co-occurrences Speech 16 co-occurrences Audio 45 co-occurrences Speech Recognition 15 co-occurrences Video Generation 18 co-occurrences

Where this tag comes from

Provider tag84
Api tag71
Openapi tag35
Openapi op tag68

Markets provisional

Kin Score markets whose measured providers carry this tag. Share is the fraction of the market's measured providers that carry it — it describes the market, not this tag.

MarketShare of the market's providers
Speech and Voice AI43%

Cohort brief

Auto-generated

The 82 providers in the APIs.io catalog tagged Text-to-Speech, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
82
of 84 in the catalog
Mean Kin Score
38.2
+14.1 vs catalog 24.1
Mean Agent Readiness
25.9
+11.8 vs catalog 14.1
Spread
0–83.2
median 35.6 · σ 16.1
How the 82 split by band
Exemplar 3Strong 12Developing 19Thin 30Emerging 16Minimal 2
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 44.3 24.5 +19.8 82
Contract Quality 38.1 18.6 +19.5 82
Access Clarity 44.7 30 +14.7 82
Discoverability 69.3 59.1 +10.2 82
Operational Transparency 21.3 13.2 +8.1 82
Contract Governance 15.2 9.7 +5.5 82

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) 28% 18% +10
MCP server (first-party) 30% 16% +14
Agent Skills 0% 0% 0
OAuth scopes 12% 13% -1
Security 100% 99% +1
Arazzo workflows 4% 1% +3
Governance rules 70% 36% +34

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 ElevenLabs 83.2
  2. 2 Amazon Polly 73.1
  3. 3 Google Cloud Text-To-Speech 68.6
  4. 4 deapi-ai 65.8
  5. 5 SLNG 62.6
  6. 6 Google Gemini 61.7
  7. 7 AutoContent API 61.3
  8. 8 Speko 59
  9. 9 Actionpower 58.9
  10. 10 KugelAudio 58.2
Top by Agent Readiness
  1. 1 AutoContent API 66.1
  2. 2 Sarj AI Developer API 65.6
  3. 3 Speko 61
  4. 4 ElevenLabs 60.3
  5. 5 deapi-ai 52.6
  6. 6 Fish Audio 52.6
  7. 7 Bluma 50.9
  8. 8 HeyGen 48.8
  9. 9 Puppetry 45.3
  10. 10 useapi.net 45
All 84 members of this roster resolve to a provider in the catalog; 82 carry a score (98%). The figures above describe the scored members only.
Coverage caveat. 53 of 82 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 14 November 2026, across 41591 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

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Tools for tags

7 MCP tools reach this
  • 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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