established · 0.5 market domain

Text-to-Speech

Score 26.9 / 100 66 providers +8 via APIs 45 APIs Search apis.io →
Business capabilities this tag reaches
Content Origination & Production Management 1

Providers using this tag (66)

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

Exemplar 1 Complete, well-documented, and agent-ready
ElevenLabsArtificial IntelligenceSpeech-to-TextVoice12 APIs81.8
Strong 5 Solid coverage with minor gaps
CaptionsCompanyVideoArtificial IntelligenceVideo Editing3 APIs63.9Amazon PollyArtificial IntelligenceMachine LearningSpeech Synthesis2 APIs61.0AutoContent APIArtificial IntelligenceAudioContent GenerationPodcasts3 APIs60.4BlumaCompanyArtificial IntelligenceVideoVideo Generation2 APIs58.5ActionpowerSpeech RecognitionSpeech-to-TextNatural Language Processing3 APIs57.3
Developing 28 Usable, with meaningful gaps to close
SLNGCompanySpeechVoiceSpeech-to-Text7 APIs53.6SarvamCompanyAi MlArtificial IntelligenceMachine Learning1 API53.0SpekoVoiceVoice AISpeech-to-Text1 API50.5GeminiLLMGeminiAgentsArtificial Intelligence1 API50.1SpeechmaticsSpeech RecognitionSpeech-to-TextTranscriptionReal-Time Transcription2 APIs48.6PuppetryCompanyArtificial IntelligenceVideo1 API48.5DeepdubCompanyVoiceDubbing2 APIs48.4HedraCompanyArtificial IntelligenceGenerative AIVideo Generation1 API48.1StepFunArtificial IntelligenceLLMMulti-ModalChat Completions12 APIs47.9GradiumCompanyAi MlVoice AI1 API47.7KugelAudioVoiceSpeech SynthesisVoice AI1 API46.5HeyGenArtificial IntelligenceGenerative AIVideoAvatars1 API46.3Moore ThreadsCompanyGPUArtificial IntelligenceMachine Learning4 APIs46.3DeepgramArtificial IntelligenceSpeech-to-TextTranscription3 APIs46.1MirageCompanyArtificial IntelligenceVideoVideo Generation1 API46.0UnisoundCompanyArtificial IntelligenceSpeech Recognition3 APIs45.8Google Cloud Text-To-SpeechAudioGoogle CloudMachine LearningSpeech Synthesis1 API45.6NeuphonicVoice AIAudioStreaming1 API43.9FreeTTSSpeech SynthesisAI-voiceAudio1 API43.4LMNTVoice SynthesisVoice CloningAudio Streaming1 API43.1PlayHTVoiceTTSVoice Cloning1 API42.8useapi.netCompanyArtificial IntelligenceGenerative AIVideo Generation2 APIs42.2KotobaCompanyArtificial IntelligenceMachine LearningVoice4 APIs41.8CartesiaArtificial IntelligenceVoice AISpeech-to-Text1 API41.4Sarj AI Developer APIVoice AIVoice AgentsConversational AIArabic AI4 APIs41.3Smallest AIArtificial IntelligenceVoiceReal-Time1 API41.2GlioCompanyArtificial IntelligenceMachine LearningMedia Generation1 API40.8Hailuo AI / MiniMaxVideo GenerationAI VideoGenerative AIText-to-Video1 API40.2
Thin 20 Limited public surface area
Camb.AIArtificial IntelligenceDubbingTranslation1 API39.2ListnrArtificial IntelligenceTTSVoice1 API36.5WellSaid LabsArtificial IntelligenceVoiceAudio1 API36.2Fish AudioVoiceSpeech-to-TextVoice Cloning1 API35.5PolyaiCompanyConversational AIVoice AICustomer Service1 API35.5PodcastleArtificial IntelligenceAudioVoice Cloning1 API35.4NarakeetTTSVoiceAudio1 API35.2UberduckArtificial IntelligenceTTSVoice1 API35.0CreatifyAI AvatarsVideo GenerationAI VideoGenerative AI1 API34.6SpeechifyArtificial IntelligenceVoiceSpeech Synthesis1 API34.3HouroneCompanyArtificial IntelligenceVideoVideo Generation2 APIs34.1WondercraftArtificial IntelligenceAudioPodcasts1 API34.0Kalpa LabsCompanySpeechVoice1 API33.7LOVO AIArtificial IntelligenceTTSVoice Generation1 API33.3Unreal SpeechTTSSpeech SynthesisAudio1 API33.3Ex-HumanCompanyArtificial IntelligenceConversational AIAI Companion1 API33.0aiOlaSpeech RecognitionSpeech-to-TextVoice AI3 APIs30.6ImaginodeArtificial IntelligenceImage GenerationVideo Generation2 APIs29.9RespeecherVoice AIVoice CloningSpeech to Speech1 API29.7OddcastCompanySpeech SynthesisAvatars2 APIs27.4
Emerging 11 Early or largely undocumented
NuanceCompanySpeech RecognitionConversational AINatural Language Understanding5 APIs25.1Wit.AICompanyNatural Language ProcessingNLPSpeech Recognition1 API23.7EverlitAudioVideoSocialPodcasts2 APIs21.9YouartCompanyArtificial IntelligenceGenerative AIImage Generation1 API21.8MiraiCompanyArtificial IntelligenceOn-Device AIInference1 API20.2AnyvoiceArtificial IntelligenceVoiceSpeech Synthesis20.1ReadSpeakerSpeechAudioVoice1 API16.6Useful SensorsCompanyAi MlSpeech-to-Text16.4Replica StudiosCompanyVoiceSpeech to Speech1 API13.8PinokioAI LauncherAI BrowserLocal AIOpen Source13.5InstareadCompanyAudioPublishing12.2
Minimal 1 Almost no public developer surface
SonanticVoiceEmotive AIAcquired3.5

APIs with this tag (45)

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.81.8Adobe Suite Text To Speech APIEndpoints for text-to-speech operations.78.3Dify Audio APIText-to-Speech and Speech-to-Text operations. 2 operation(s) from the Dify Service API.75.3
Strong 2 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...66.0Eden AI Text To Speech APIThe Text To Speech API from Eden AI — 1 operation(s) for text to speech.62.2
Developing 18 Usable, with meaningful gaps to close
Sarvam Text To Speech APIThe Text To Speech API from Sarvam — 2 operation(s) for text to speech.53.0Runway Text To Speech APISynthesize speech audio from text.51.7Gemini Text-to-Speech APINative audio generation text-to-speech capabilities through the Gemini API, supporting single and multi-spe...50.1Speechmatics Text-to-Speech APIREST API for converting text to natural-sounding speech with multiple voice options and language support.48.6ELBO AI, INC Text to Speech APIThe Text to Speech API from ELBO AI, INC — 1 operation(s) for text to speech.48.5StepFun Audio APISpeech synthesis (TTS), voice cloning with preview, official voice catalog, audio transcription, and file-b...47.9HeyGen APIThe HeyGen REST API exposes video generation, avatar management, text-to-speech (Starfish), video translati...46.3Moore Threads AIBook Text-to-Speech APIHTTP and WebSocket speech synthesis. A non-streaming POST /api/v1/tts/generate returns a complete wav/mp3 f...46.3Deepgram Text-To-Speech APIConvert text into natural-sounding speech audio.46.1Unisound 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...45.8Neuphonic TTS WebSocket APIWebSocket endpoint for continuous, low-latency text-to-speech streaming. Enables real-time voice synthesis ...43.9FreeTTS REST APIREST/JSON API for text-to-speech synthesis, audio and SRT subtitle download, and voice listing. Uses x-api-...43.4Pryon Text To Speech APIThe Text To Speech API from Pryon — 1 operation(s) for text to speech.41.7Cartesia Text-to-Speech APISingle-shot and streamed speech generation over plain HTTP.41.4Cartesia TTS WebSocket APIBidirectional, multiplexed WebSocket at wss://api.cartesia.ai/tts/websocket for realtime speech generation....41.4Smallest AI Text to Speech APISynthesize speech from text.41.2Hailuo AI / MiniMax Text to Speech APISpeech synthesis (T2A v2).40.2
Thin 17 Limited public surface area
Camb.AI Text-to-Speech APIConvert text to speech with the MARS voice models.39.2Azure AI Speech APISpeech-to-text, text-to-speech, speech translation, and speaker recognition.38.5Listnr Text-to-Speech APIConvert SSML text or an article URL into audio.36.5WellSaid Labs Text-to-Speech APIRender text to speech as clips or audio streams.36.2Fish Audio APIThe Fish Audio API provides RESTful access to text-to-speech, speech-to-text, voice cloning, and voice mana...35.5Podcastle Text to Speech APISynthesize speech from text in batch, streaming, or with word timestamps.35.4Narakeet Text to Speech APIBuild narrated audio (MP3, M4A, WAV) from text, SubRip, or WebVTT input.35.2Uberduck Text-to-Speech APISynthesize speech from text using a chosen voice and model.35.0Creatify Text-to-Speech APIGenerate voiceovers from text.34.6LOVO AI Text-to-Speech APIConvert text to speech synchronously or asynchronously and retrieve job results.33.3Ex-Human Text to Speech APIThe Text to Speech API from Ex-Human — 1 operation(s) for text to speech.33.0aiOla Text to Speech APILow-latency speech synthesis with multi-language, multi-voice support and jargon-pronunciation conditioning...30.6Imaginode MCP ServerHosted MCP server (Streamable HTTP transport) exposing four tools: list_models, generate_image, generate_vi...29.9Imaginode REST APIREST API to list models and launch/track image and video generations. Endpoints: GET /api/models (unauthent...29.9Respeecher Space Real-Time TTS APILow-latency real-time text-to-speech that begins streaming audio in under 200ms via three transports - one-...29.7SitePal 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...27.4
Emerging 5 Early or largely undocumented
Nuance Mix TTSaaS gRPC APIText-to-Speech as a Service — turn text into synthesized speech (including neural voices) over a gRPC Synth...25.1Everlit REST APIEverlit markets a REST API for connecting a custom CMS or platform that has no native integration — "our RE...21.9IBM Watson Text to SpeechConvert written text to natural-sounding audio in a variety of languages and voices. The service synthesize...19.3ReadSpeaker Speech Cloud APIA cloud-based text-to-speech API. When using the API from within your software or application, you simply s...16.6Replica APIReplica API v2 (OpenAPI 3.0.0) — REST API for AI text-to-speech, speech-to-speech, and voice-library operat...13.8

Companies reaching this through an API (8)

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 Dify Eden AI IBM Watson Microsoft Cognitive Services Oracle Pryon Runway

Score breakdown

Frequency
57.8
log-scaled weighted occurrences
Breadth
1.7
spread across providers
Quality lift
46.5
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 13 providers

Related tags

Voice Cloning 19 co-occurrences Speech Synthesis 16 co-occurrences Speech-to-Text 20 co-occurrences TTS 15 co-occurrences Voice 45 co-occurrences Speech Recognition 13 co-occurrences Speech 11 co-occurrences Audio 32 co-occurrences

Where this tag comes from

Provider tag66
Api tag45
Openapi tag20
Openapi op tag40

Cohort brief

Auto-generated

The 66 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
66
all scored
Mean Kin Score
38.6
+15.7 vs catalog 22.9
Mean Agent Readiness
24
+12.1 vs catalog 11.9
Spread
3.5–81.8
median 40.5 · σ 13.7
How the 66 split by band
Exemplar 1Strong 5Developing 28Thin 20Emerging 11Minimal 1
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 45.5 23.2 +22.3 66
Contract Quality 38.5 17.6 +20.9 66
Access Clarity 42.4 26.5 +15.9 66
Operational Transparency 25.4 13.7 +11.7 66
Discoverability 69.5 58.1 +11.4 66
Contract Governance 7.9 6.3 +1.6 66

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% 14% +10
MCP server (first-party) 24% 12% +12
Agent Skills 0% 0% 0
OAuth scopes 6% 11% -5
Security 100% 98% +2
Arazzo workflows 6% 2% +4
Governance rules 21% 14% +7

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 81.8
  2. 2 Captions 63.9
  3. 3 Amazon Polly 61
  4. 4 AutoContent API 60.4
  5. 5 Bluma 58.5
  6. 6 Actionpower 57.3
  7. 7 SLNG 53.6
  8. 8 Sarvam 53
  9. 9 Speko 50.5
  10. 10 Gemini 50.1
Top by Agent Readiness
  1. 1 Sarj AI Developer API 67.3
  2. 2 AutoContent API 65.9
  3. 3 Speko 60.5
  4. 4 ElevenLabs 52.7
  5. 5 HeyGen 51.4
  6. 6 Bluma 50.9
  7. 7 Creatify 47.1
  8. 8 Fish Audio 44.6
  9. 9 Puppetry 43.9
  10. 10 useapi.net 39
All 66 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 5 October 2026, across 29093 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.

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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.
All 92 tools →

Call it yourself

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This tag 
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All tags 
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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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