established · 0.2 capability action

Speech-to-Text

Score 28.1 / 100 50 providers +9 via APIs 28 APIs Search apis.io →
Business capabilities this tag reaches
Information & Data Management 1

Providers using this tag (50)

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

Exemplar 3 Complete, well-documented, and agent-ready
ElevenLabsArtificial IntelligenceText-to-SpeechVoice12 APIs81.8TranscriptFetchTranscriptsCaptionsYouTube2 APIs67.6S&P GlobalCapital IQCommodity InsightsCredit RatingsDocument Extraction5 APIs66.9
Strong 6 Solid coverage with minor gaps
Amazon TranscribeAudio ProcessingMachine LearningSpeech Recognition1 API58.6CortiCompanyHealthHealthcareArtificial Intelligence8 APIs57.5ActionpowerSpeech RecognitionText-to-SpeechNatural Language Processing3 APIs57.3SimplismartCompanyArtificial IntelligenceMachine LearningInference19 APIs57.3SiroCompanySalesSales CoachingConversation Intelligence5 APIs56.6ModulateCompanyArtificial IntelligenceVoice AI11 APIs55.7
Developing 19 Usable, with meaningful gaps to close
SLNGCompanySpeechVoice7 APIs53.6SarvamCompanyAi MlArtificial IntelligenceMachine Learning1 API53.0MediaCaption APIYouTubeTranscriptionCaptionsSubtitles1 API51.7Allo-MediaCompanyAi DataSpeech Recognition4 APIs50.9SpekoVoiceVoice AIText-to-Speech1 API50.5GladiaTranscriptionAudio IntelligenceReal-Time1 API49.4SpeechmaticsSpeech RecognitionTranscriptionReal-Time Transcription2 APIs48.6Multiverse ComputingArtificial IntelligenceMachine LearningInferenceModel Compression2 APIs47.9GradiumCompanyAi MlVoice AIText-to-Speech1 API47.7DeepgramArtificial IntelligenceText-to-SpeechTranscription3 APIs46.1InterfazeCompanyArtificial IntelligenceMachine LearningLLM1 API46.1Heidi HealthHealthcareHealth TechAI Medical ScribeAmbient AI1 API44.6KenshoCompanyArtificial IntelligenceMachine LearningFinancial Data4 APIs44.4FreeTTSText-to-SpeechSpeech SynthesisAI-voiceAudio1 API43.4AssemblyAIArtificial IntelligenceAudioSpeechTranscription1 API41.8KotobaCompanyArtificial IntelligenceMachine LearningVoice4 APIs41.8CartesiaArtificial IntelligenceVoice AIText-to-Speech1 API41.4Sarj AI Developer APIVoice AIVoice AgentsConversational AIArabic AI4 APIs41.3AieraFinancial ResearchEarnings CallsTranscriptsSEC Filings5 APIs40.9
Thin 13 Limited public surface area
Wispr FlowCompanyVoiceDictation1 API38.5VoiceittSpeech RecognitionVoiceAccessibility1 API38.0TrintAudio TranscriptionTranscriptionMedia1 API37.3Fish AudioVoiceText-to-SpeechVoice Cloning1 API35.5SonixAudio TranscriptionTranscriptionSubtitles1 API35.4Symbl.aiCompanyConversation IntelligenceVoice AI35.4Happy ScribeAudio TranscriptionTranscriptionSubtitles1 API35.2ArgmaxCompanyEnterpriseArtificial IntelligenceMachine Learning1 API34.5Reson8Speech RecognitionASRVoice AI3 APIs32.7aiOlaSpeech RecognitionText-to-SpeechVoice AI3 APIs30.6Rev AISpeech RecognitionTranscriptionAudio7 APIs29.2TortusCompanyHealthcareArtificial IntelligenceAmbient Clinical Documentation1 API28.7Otter.aiArtificial IntelligenceTranscriptionMeeting Notes1 API27.2
Emerging 5 Early or largely undocumented
Cloverleaf AICompanyGovernmentB2GSales Intelligence1 API26.1Wit.AICompanyNatural Language ProcessingNLPSpeech Recognition1 API23.7VoquillCompanyVoiceDictation22.5Sully AIHealthcareHealth TechMedical AIClinical AI1 API18.5Useful SensorsCompanyAi MlText-to-Speech16.4
Minimal 4 Almost no public developer surface
IntellaCompanyArtificial IntelligenceVoice AIConversational AI9.4Viva TranslateCompanyTranslationReal-Time TranslationTranscription9.2Pop Up ArchiveCompanyAudioTranscription0.0SpeechlyCompanySpeech RecognitionVoiceSpoken Language Understanding1 API0.0

APIs with this tag (28)

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 5 Complete, well-documented, and agent-ready
elevenlabs Speech to Text APIEndpoints for converting audio into text transcriptions with support for multiple languages and audio formats.81.8Dify Audio APIText-to-Speech and Speech-to-Text operations. 2 operation(s) from the Dify Service API.75.3Kensho Scribe Batch API v1Legacy v1 batch transcription endpoint (POST /api/v1/transcription). Superseded by the v2 batch API which d...66.9Kensho Scribe Batch API v2Asynchronous audio and video transcription REST API. POST a media file to start a transcription job, then p...66.9Kensho Scribe Real Time APIReal-time streaming transcription over a WebSocket at wss://scribe.kensho.com/ws. Clients send an Authentic...66.9
Strong 3 Solid coverage with minor gaps
RingCentral Audio and Video AI APIThe RingCentral Audio and Video AI API exposes speech-to-text, summarization, and conversational analytics ...61.0Corti Speech to Text APIReal-time, bidirectional stateless dictation over WebSocket, returning live transcripts and detected commands.57.5Simplismart Speech to Text APIThe Speech to Text API from Simplismart — 2 operation(s) for speech to text.57.3
Developing 9 Usable, with meaningful gaps to close
Sarvam Speech To Text APIThe Speech To Text API from Sarvam — 2 operation(s) for speech to text.53.0DeepL Voice APIThe DeepL Voice API provides real-time speech transcription and translation. A POST to /v3/voice/realtime i...50.0Mistral AI Audio Transcription APIAudio transcription API powered by Voxtral for speech-to-text with diarization, word-level timestamps, and ...49.6Gladia Live (Real-time) APIWebSocket API for real-time live audio transcription with sub-second latency, supporting multi-language det...49.4Speechmatics Realtime Transcription APIWebSocket API for low-latency real-time streaming transcription supporting live audio input, speaker diariz...48.6Kensho ScribeAsynchronous speech-to-text transcription API that turns audio and video into text with high accuracy. Supp...44.4FreeTTS REST APIREST/JSON API for text-to-speech synthesis, audio and SRT subtitle download, and voice listing. Uses x-api-...43.4Cartesia Speech-to-Text APIBatch transcription of an audio file of any length.41.4Cartesia STT WebSocket APIRealtime transcription over WebSocket at wss://api.cartesia.ai/stt/websocket. Clients stream raw binary aud...41.4
Thin 10 Limited public surface area
Azure AI Speech APISpeech-to-text, text-to-speech, speech translation, and speaker recognition.38.5Voiceitt WebSockets APISocket.IO WebSockets API for real-time speech recognition. After JWT login via the HTTP API, clients set re...38.0Fish Audio APIThe Fish Audio API provides RESTful access to text-to-speech, speech-to-text, voice cloning, and voice mana...35.5Podcastle TranscriptionTranscription and speech-to-text are Podcastle platform features (multi-language transcription with speaker...35.4Argmax Local ServerA local transcription server for macOS that is API-compatible with the Deepgram Speech-to-Text (Live) API, ...34.5Reson8 Speech to Text APIRealtime, turn-level, and prerecorded transcription.32.7Agora Real-Time Speech-to-Text APIThe Agora Real-Time Speech-to-Text API provides streaming transcription and real-time translation across mu...30.6aiOla Speech to Text APIJargonic automatic speech recognition. Batch file transcription over HTTP (POST /api/speech-to-text/file, 5...30.6Taddy Episode Transcripts APIRetrieve episode transcripts with getEpisodeTranscript and the transcriptWithSpeakersAndTimecodes field, in...29.6Otter.ai APIThe Otter.ai REST API enables Enterprise customers to programmatically upload audio and video files for tra...27.2
Emerging 1 Early or largely undocumented
Nuance Mix ASRaaS gRPC APIAutomatic Speech Recognition as a Service — convert speech to text in real time over a gRPC streaming API (...25.1

Companies reaching this through an API (9)

These companies publish an API, specification or operation carrying “Speech-to-Text” 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.

Agora DeepL Dify Microsoft Cognitive Services Mistral AI Nuance Podcastle RingCentral Taddy

Score breakdown

Frequency
52.2
log-scaled weighted occurrences
Breadth
1.3
spread across providers
Quality lift
49.6
mean composite of providers using it
Cohesion
32.2
strength of nearest seed neighbor

Where this tag sits

Voice AI broader Voice broader

Related tags

Transcription 33 co-occurrences Text-to-Speech 20 co-occurrences Speech Recognition 15 co-occurrences Captions 7 co-occurrences Voice AI 15 co-occurrences Voice 26 co-occurrences NLP 7 co-occurrences Voice Agents 7 co-occurrences

Where this tag comes from

Provider tag50
Api tag28
Openapi tag5
Openapi op tag10

Cohort brief

Auto-generated

The 48 providers in the APIs.io catalog tagged Speech-to-Text, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
48
all scored
Mean Kin Score
41.6
+18.7 vs catalog 22.9
Mean Agent Readiness
27.6
+15.7 vs catalog 11.9
Spread
0–81.8
median 41.8 · σ 15.1
How the 48 split by band
Exemplar 3Strong 6Developing 19Thin 13Emerging 5Minimal 2
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 50.4 23.2 +27.2 48
Contract Quality 37.5 17.6 +19.9 48
Operational Transparency 31.8 13.7 +18.1 48
Access Clarity 44 26.5 +17.5 48
Discoverability 69.8 58.1 +11.7 48
Contract Governance 10.8 6.3 +4.5 48

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) 38% 14% +24
MCP server (first-party) 38% 12% +26
Agent Skills 0% 0% 0
OAuth scopes 19% 11% +8
Security 100% 98% +2
Arazzo workflows 2% 2% 0
Governance rules 19% 14% +5

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 TranscriptFetch 67.6
  3. 3 S&P Global 66.9
  4. 4 Amazon Transcribe 58.6
  5. 5 Corti 57.5
  6. 6 Actionpower 57.3
  7. 7 Simplismart 57.3
  8. 8 Siro 56.6
  9. 9 Modulate 55.7
  10. 10 SLNG 53.6
Top by Agent Readiness
  1. 1 Sarj AI Developer API 67.3
  2. 2 S&P Global 66.2
  3. 3 Speko 60.5
  4. 4 TranscriptFetch 58.1
  5. 5 ElevenLabs 52.7
  6. 6 Kensho 51.1
  7. 7 Trint 44.6
  8. 8 Fish Audio 44.6
  9. 9 Sonix 44.6
  10. 10 Happy Scribe 44.6
All 50 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.

Work with this as data

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

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

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

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