established · -1.4 market domain

Text-to-Speech

Score 25.5 / 100 67 providers +23 via APIs 69 APIs Search apis.io →
Business capabilities this tag reaches
Content Origination & Production Management 1
Variants seen in the corpus: Text to SpeechTTS

Providers using this tag (67)

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

Exemplar 1 Complete, well-documented, and agent-ready
ElevenLabsArtificial IntelligenceSpeech-to-TextVoice12 APIs80.4
Strong 8 Solid coverage with minor gaps
SLNGCompanySpeechVoiceSpeech-to-Text7 APIs59.6SpekoVoiceVoice AISpeech-to-Text1 API56.5Amazon PollyArtificial IntelligenceMachine LearningSpeech Synthesis2 APIs65.2AutoContent APIArtificial IntelligenceAudioContent GenerationPodcasts3 APIs59.0BlumaCompanyArtificial IntelligenceVideoVideo Generation2 APIs58.6Venice.aiCompanyArtificial IntelligenceLLMImage Generation1 API56.3CaptionsCompanyVideoArtificial IntelligenceVideo Editing2 APIs54.6StepFunArtificial IntelligenceLLMMulti-ModalChat Completions12 APIs54.4
Developing 16 Usable, with meaningful gaps to close
SarvamCompanyArtificial IntelligenceMachine LearningSpeech-to-Text1 API53.2DeepdubCompanyVoiceDubbing2 APIs47.9GradiumCompanyArtificial IntelligenceVoice AI1 API47.0Google Cloud Text-To-SpeechAudioGoogle CloudMachine LearningSpeech Synthesis1 API45.0FreeTTSSpeech SynthesisAI-voiceAudio1 API43.1Google GeminiAI AgentsArtificial IntelligenceCode GenerationEmbeddings1 API53.5MirageCompanyArtificial IntelligenceVideoVideo Generation1 API49.9Moore ThreadsCompanyGPUArtificial IntelligenceMachine Learning4 APIs48.1PuppetryCompanyArtificial IntelligenceVideo1 API48.1useapi.netCompanyArtificial IntelligenceGenerative AIVideo Generation2 APIs45.9UnisoundCompanyArtificial IntelligenceSpeech Recognition3 APIs45.8GlioCompanyArtificial IntelligenceMachine LearningMedia Generation1 API44.7KotobaCompanyArtificial IntelligenceMachine LearningVoice4 APIs41.4Sarj AI Developer APIVoice AIVoice AgentsConversational AIArabic AI4 APIs41.2HeyGenArtificial IntelligenceGenerative AIVideoAvatars1 API41.1SpeechmaticsSpeech RecognitionSpeech-to-TextTranscriptionReal-Time Transcription2 APIs40.2
Thin 23 Limited public surface area
Smallest AIArtificial IntelligenceVoiceReal-Time1 API38.1CartesiaArtificial IntelligenceVoice AISpeech-to-Text1 API37.9NeuphonicVoice AIAudioStreaming1 API35.6LMNTVoice SynthesisVoice CloningAudio Streaming1 API35.2Unreal SpeechSpeech SynthesisAudioVoice1 API34.6WellSaid LabsArtificial IntelligenceVoiceAudio1 API33.9Kalpa LabsCompanySpeechVoice1 API33.3NarakeetVoiceAudioVideo1 API33.3Resemble AIArtificial IntelligenceVoiceVoice Cloning1 API31.1MurfArtificial IntelligenceVoiceVoiceover1 API28.3OddcastCompanySpeech SynthesisAvatars2 APIs27.4PodcastleArtificial IntelligenceAudioVoice Cloning1 API26.6RimeArtificial IntelligenceVoiceReal-Time1 API26.4Ex-HumanCompanyArtificial IntelligenceConversational AIAI Companion1 API38.6Hailuo AI / MiniMaxVideo GenerationAI VideoGenerative AIImage-to-Video1 API38.3PolyaiCompanyConversational AIVoice AICustomer Service1 API35.4WondercraftArtificial IntelligenceAudioPodcasts1 API35.1AllmodelsCompanyVoice AISpeech-to-Text7 APIs34.9HouroneCompanyArtificial IntelligenceVideoVideo Generation1 API33.8aiOlaSpeech RecognitionSpeech-to-TextVoice AI3 APIs30.3ImaginodeArtificial IntelligenceImage GenerationVideo Generation2 APIs29.6UberduckArtificial IntelligenceVoiceVoice Cloning1 API26.7SunoArtificial IntelligenceMusic GenerationAudioGenerative1 API26.3
Emerging 17 Early or largely undocumented
SpeechifyArtificial IntelligenceVoiceSpeech Synthesis1 API25.5LOVO AIArtificial IntelligenceVoice GenerationVoice Cloning1 API24.5RespeecherVoice AIVoice CloningSpeech to Speech1 API23.6MiraiCompanyArtificial IntelligenceOn-Device AIInference1 API19.9MihupCompanyConsumerVoice AISpeech Recognition19.5ReadSpeakerSpeechAudioVoice1 API14.7Replica StudiosCompanyVoiceSpeech to Speech1 API13.4CreatifyAI AvatarsVideo GenerationAI VideoGenerative AI1 API26.0NuanceCompanySpeech RecognitionConversational AINatural Language Understanding5 APIs25.1Wit.AICompanyNatural Language ProcessingSpeech RecognitionSpeech-to-Text1 API23.8YouartCompanyArtificial IntelligenceGenerative AIImage Generation1 API22.0EverlitAudioVideoSocialPodcasts2 APIs21.6lazybird-appCompanyArtificial IntelligenceVoiceover1 API21.3AnyvoiceArtificial IntelligenceVoiceSpeech Synthesis19.8Useful SensorsCompanyArtificial IntelligenceSpeech-to-Text16.1PinokioAI LauncherAI BrowserLocal AIOpen Source13.1InstareadCompanyAudioPublishing11.9
Minimal 2 Almost no public developer surface
SonanticVoiceEmotive AIAcquired3.1PlayHTVoiceVoice CloningVoice Agents1 API0.0

APIs with this tag (66)

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 3 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.80.4Adobe Suite Text To Speech APIEndpoints for text-to-speech operations.77.3Dify Audio APIText-to-Speech and Speech-to-Text operations. 2 operation(s) from the Dify Service API.73.8
Strong 10 Solid coverage with minor gaps
OCI AI Speech APIAI service for converting audio and media files to accurate text transcriptions in JSON and SRT formats usi...65.9Airia Text To Speech APIThe Text To Speech API from Airia — 2 operation(s) for text to speech.64.0SAKURA internet Tts APIThe Tts API from SAKURA internet — 2 operation(s) for tts.63.7AIMLAPI Tts APIThe Tts API from AIMLAPI — 1 operation(s) for tts.63.3Eden AI Text To Speech APIThe Text To Speech API from Eden AI — 1 operation(s) for text to speech.61.2NVIDIA NIM TTS APIText-to-speech synthesis60.6Sonetel Tts APIThe Tts API from Sonetel — 2 operation(s) for tts.58.6Actionpower TTS APIThe TTS API from Actionpower — 1 operation(s) for tts.57.0KugelAudio Text to Speech APIThe Text to Speech API from KugelAudio — 1 operation(s) for text to speech.54.8StepFun Audio APISpeech synthesis (TTS), voice cloning with preview, official voice catalog, audio transcription, and file-b...54.4
Developing 14 Usable, with meaningful gaps to close
Sarvam Text To Speech APIThe Text To Speech API from Sarvam — 2 operation(s) for text to speech.53.2Runway Text To Speech APISynthesize speech audio from text.49.9Convai TTS APIThe TTS API from Convai — 3 operation(s) for tts.48.9ELBO AI, INC Text to Speech APIThe Text to Speech API from ELBO AI, INC — 1 operation(s) for text to speech.48.1Moore Threads AIBook Text-to-Speech APIHTTP and WebSocket speech synthesis. A non-streaming POST /api/v1/tts/generate returns a complete wav/mp3 f...48.1Deepdub TTS APIThe TTS API from Deepdub — 1 operation(s) for tts.47.9Gradium TTS APIText-to-Speech endpoints for converting text to audio47.0Unisound AI Open Platform Speech WebAPIWebSocket speech APIs on the Unisound AI Open Platform: one-sentence speech recognition (Mandarin, Cantones...45.8Unisound Token Hub APIMulti-modal MaaS API for Unisound U2 models: OpenAI-compatible chat completions and Anthropic-compatible me...45.8FreeTTS REST APIREST/JSON API for text-to-speech synthesis, audio and SRT subtitle download, and voice listing. Uses x-api-...43.1Pryon Text To Speech APIThe Text To Speech API from Pryon — 1 operation(s) for text to speech.42.5SK Telecom Tts APIThe Tts API from SK Telecom — 1 operation(s) for tts.41.5HeyGen APIThe HeyGen REST API exposes video generation, avatar management, text-to-speech (Starfish), video translati...41.1Speechmatics Text-to-Speech APIREST API for converting text to natural-sounding speech with multiple voice options and language support.40.2
Thin 23 Limited public surface area
Ex-Human Text to Speech APIThe Text to Speech API from Ex-Human — 1 operation(s) for text to speech.38.6Hailuo AI / MiniMax Text to Speech APISpeech synthesis (T2A v2).38.3Smallest AI Text to Speech APISynthesize speech from text.38.1Cartesia Text-to-Speech APISingle-shot and streamed speech generation over plain HTTP.37.9Cartesia TTS WebSocket APIBidirectional, multiplexed WebSocket at wss://api.cartesia.ai/tts/websocket for realtime speech generation....37.9Azure AI Speech APISpeech-to-text, text-to-speech, speech translation, and speaker recognition.37.0Neuphonic TTS WebSocket APIWebSocket endpoint for continuous, low-latency text-to-speech streaming. Enables real-time voice synthesis ...35.6Creed Tts APIThe tts API from Creed — 2 operation(s) for tts.34.0WellSaid Labs Text-to-Speech APIRender text to speech as clips or audio streams.33.9Narakeet Text to Speech APIBuild narrated audio (MP3, M4A, WAV) from text, SubRip, or WebVTT input.33.3LiveKit Agents APIFramework and runtime for voice / multimodal AI agents that join LiveKit rooms; integrates with LLM, STT, a...31.5Hume AI Tts APIThe Tts API from Hume AI — 6 operation(s) for tts.30.8aiOla Text to Speech APILow-latency speech synthesis with multi-language, multi-voice support and jargon-pronunciation conditioning...30.3Inworld AI TTS APIText-to-Speech synthesis29.7Inworld Text-to-Speech APITTS-2 and TTS-1.5 (Max/Mini) models for character voice synthesis. Priced per 1M characters with plan-tier ...29.7Imaginode MCP ServerHosted MCP server (Streamable HTTP transport) exposing four tools: list_models, generate_image, generate_vi...29.6Imaginode REST APIREST API to list models and launch/track image and video generations. Endpoints: GET /api/models (unauthent...29.6Fish Audio APIThe Fish Audio API provides RESTful access to text-to-speech, speech-to-text, voice cloning, and voice mana...29.5SitePal 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...27.4Uberduck Text-to-Speech APISynthesize speech from text using a chosen voice and model.26.7Podcastle Text to Speech APISynthesize speech from text in batch, streaming, or with word timestamps.26.6Rime TTS APIRealtime text-to-speech API supporting streaming HTTP, WebSocket, and SSE delivery for Arcana and Mist mode...26.4
Emerging 14 Early or largely undocumented
Creatify Text-to-Speech APIGenerate voiceovers from text.26.0Nuance Mix TTSaaS gRPC APIText-to-Speech as a Service — turn text into synthesized speech (including neural voices) over a gRPC Synth...25.1LOVO AI Text-to-Speech APIConvert text to speech synchronously or asynchronously and retrieve job results.24.5Respeecher Space Real-Time TTS APILow-latency real-time text-to-speech that begins streaming audio in under 200ms via three transports - one-...23.6Respeecher Tts APIThe tts API from Respeecher — 1 operation(s) for tts.23.6CitiConnect APICitiConnect is the corporate treasury and trade integration channel within Citi's Treasury and Trade Soluti...23.5CitiConnect FX (Real-Time FX) APIThe CitiConnect FX API provides real-time foreign-exchange information and execution for corporate treasury...23.5CitiConnect Statements and Reporting APIThe CitiConnect Statements and Reporting API delivers self-service reports, account statements, intraday an...23.5CitiConnect WorldLink Payment Services APIThe CitiConnect WorldLink Payment Services API delivers cross-border, multi-currency payment capabilities w...23.5Everlit REST APIEverlit markets a REST API for connecting a custom CMS or platform that has no native integration — "our RE...21.6IBM Watson Text to SpeechConvert written text to natural-sounding audio in a variety of languages and voices. The service synthesize...19.2ReadSpeaker Speech Cloud APIA cloud-based text-to-speech API. When using the API from within your software or application, you simply s...14.7Replica APIReplica API v2 (OpenAPI 3.0.0) — REST API for AI text-to-speech, speech-to-speech, and voice-library operat...13.4Naver Cloud CLOVA Speech APICLOVA Speech provides Korean-first speech-to-text (STT) and Korean speech synthesis (TTS / Premium Voice) A...11.6
Minimal 2 Almost no public developer surface
PlayAI 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 (23)

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.

Actionpower Adobe Suite AIMLAPI Airia Citigroup Convai Creed Dify Eden AI Hume AI IBM Watson Inworld AI KugelAudio LiveKit Microsoft Cognitive Services Naver NVIDIA NIM Oracle Pryon Runway SAKURA internet SK Telecom Sonetel

Score breakdown

Frequency
59.8
log-scaled weighted occurrences
Breadth
1.5
spread across providers
Quality lift
37.2
mean composite of providers using it
Cohesion
18.0
strength of nearest seed neighbor

Where this tag sits

Voice AI broader Voice broader Speech Synthesis 11 providers

Related tags

Voice Cloning 17 co-occurrences Voice 49 co-occurrences Speech Synthesis 14 co-occurrences Speech-to-Text 18 co-occurrences Speech 13 co-occurrences Audio 35 co-occurrences Speech Recognition 14 co-occurrences Video Generation 16 co-occurrences

Where this tag comes from

Provider tag75
Api tag69
Openapi tag30
Openapi op tag52

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 67 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
67
all scored
Mean Kin Score
35.5
+13.3 vs catalog 22.2
Mean Agent Readiness
23.6
+11.6 vs catalog 12
Spread
0–80.4
median 34.9 · σ 15.2
How the 67 split by band
Exemplar 1Strong 8Developing 16Thin 23Emerging 17Minimal 2
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 42.3 23.2 +19.1 67
Contract Quality 36 17.2 +18.8 67
Access Clarity 39.2 23.9 +15.3 67
Discoverability 68.3 57.9 +10.4 67
Operational Transparency 19.2 13 +6.2 67
Contract Governance 8 6.5 +1.5 67

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) 25% 13% +12
MCP server (first-party) 27% 12% +15
Agent Skills 0% 0% 0
OAuth scopes 6% 11% -5
Security 100% 98% +2
Arazzo workflows 3% 2% +1
Governance rules 22% 16% +6

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 80.4
  2. 2 Amazon Polly 65.2
  3. 3 SLNG 59.6
  4. 4 AutoContent API 59
  5. 5 Bluma 58.6
  6. 6 Speko 56.5
  7. 7 Venice.ai 56.3
  8. 8 Captions 54.6
  9. 9 StepFun 54.4
  10. 10 Google Gemini 53.5
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 53.5
  5. 5 Bluma 50.9
  6. 6 HeyGen 48.8
  7. 7 Creatify 44.8
  8. 8 Puppetry 43.6
  9. 9 Venice.ai 43.2
  10. 10 useapi.net 36.8
All 67 members of this roster resolve to a scored provider in the catalog.
Coverage caveat. 51 of 67 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 24 October 2026, across 31984 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.

MCP server

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https://apis.io/mcp

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.
All 92 tools →

Call it yourself

curl for this page
This tag 
curl "https://apis.io/api/v1/tags/text-to-speech"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/text-to-speech"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/text-to-speech/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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