AI Model Services › Speech & Voice

Speech & Voice

AE-110.30 Level 2 API Evangelist extension API Evangelist extension, CC BY-NC-SA 72 providers 124 API surfaces 47 rated strong or better

Converting between speech and text and synthesising voices.

Speech & Voice (AE-110.30) is a level-2 business capability under AI Model Services in the API Evangelist extension model. The catalog holds 124 API surface(s) from 72 provider(s) that can perform some part of it, 47 of them rated strong or better. Reach is the vendor surface that lands on this capability — it is not a claim about what any particular organisation has deployed.

Where this capability definition comes from. This capability is part of the API Evangelist extension to the business-capability model, written by API Evangelist and licensed CC BY-NC-SA 4.0. API Evangelist capability extension — https://apievangelist.com Audience: consumerb2bagent It extends, and never modifies, Turbo EA Capabilities by Vincent Verdet (CC BY 4.0). · Extension provenance and licence

Sub-capabilities

Speech-to-Text AE-110.30.10API Evangelist extension, CC BY-NC-SA

b2bconsumer

Transcribing audio.

no catalog coverage

Text-to-Speech AE-110.30.20API Evangelist extension, CC BY-NC-SA

consumerb2b

Synthesising speech.

no catalog coverage

Meeting Notes & Conversation Intelligence AE-110.30.40API Evangelist extension, CC BY-NC-SA

b2b

Recording, transcribing and summarising meetings and sales calls (Granola, Gong).

no catalog coverage

Voice Cloning AE-110.30.30API Evangelist extension, CC BY-NC-SA

consumerb2b

Reproducing a specific voice.

no catalog coverage

Providers that reach this capability

Ordered by rating band. Reach means a provider publishes an API surface that can perform some part of this capability — it is not a claim that any particular organisation has deployed it.

Exemplar 16 Complete, well-documented, and agent-ready
TelnyxAudioSpeech To Text CapabilitiesVoice ClonesVoice Designs4 APIs87.6TwilioTranscriptsV3Transcriptions2 APIs86.0OpenAIAudio1 API82.6ElevenLabspvc-voices1 API78.9Fireflies.aiTranscripts1 API75.6LucidyaAudio Transcription1 API71.3MuxTranscription Vocabularies1 API69.3GoogleSpeech Generation1 API68.9VonageLive Captions1 API68.2PipesHubConversational Speech1 API68.0Hugging FaceAudio1 API67.9IBMPronunciationRecognitionSynthesisVoices4 APIs67.6Eden AIAudioSpeech To Text AsyncText To SpeechText To Speech Async4 APIs67.5Amazon Pollyamazon-polly-operations-apiamazon-polly-speech-apiamazon-polly-synthesis-tasks-api3 APIs66.9Amazon Transcribeamazon-transcribe-call-analytics-job-apiamazon-transcribe-medical-scribe-job-apiamazon-transcribe-medical-transcription-job-apiamazon-transcribe-medical-vocabulary-api7 APIs66.9Microsoft AzureAudioBaseModelBatchSynthesisCustom Speech Endpoints:6 APIs66.7
Strong 31 Solid coverage with minor gaps
Anam.aiPronunciation Dictionaries1 API66.1AIMLAPISTTTTS2 APIs65.3Opper AIAudio1 API65.3Spruce HealthTranscription1 API64.4OpusClipTranscripts1 API63.8SAKURA internetAudioTTS2 APIs63.6ModulateVelma 2 Batch1 API63.5Magic HourAudio Projects1 API62.9PicsartText2AudioTranscriptions2 APIs62.8Dedalus LabsAudio1 API62.6SambaNova SystemsAudio1 API62.5RightNow AIAudio1 API62.4NVIDIA NIMTTS1 API61.5Ringovertranscriptions1 API60.6RingCentralAudio1 API59.8SonetelTTSTranscription2 APIs59.8OpusTranscripts1 API59.0LALAL.AIVoice Change1 API57.6SarvamSpeech To TextText To Speech2 APIs57.6HyperbolicAudio Generation1 API57.5PortkeyAudio1 API57.5Recall.aiTranscript1 API57.4SaperlyVoicescustomVoices2 APIs56.4KugelAudioElevenLabs compatibleText To Speech2 APIs56.3TonePerfect (Pronunciation Assessment API)Assessment1 API56.3Venice.aiAudioSpeechTranscriptionsVoices4 APIs56.2BluejayVoice ClonesVoice Generation2 APIs56.1TrueFoundryAudio1 API55.9ModelRushAudio1 API55.6Asapp3AutoTranscribe1 API55.2CaptionsAudio1 API54.7
Developing 17 Usable, with meaningful gaps to close
ClaixAudio a JSON1 API53.1FastrouterAudio1 API53.1Multiverse ComputingAudio1 API53.0Mistral AIAudio1 API52.7Google Cloud Speech-To-TextSpeech1 API52.5ASAPPAutoTranscribeAutoTranscribe Media Gateway2 APIs52.3AssemblyAITranscript1 API51.2DeepgramPre-RecordedText To Speech2 APIs51.2MirageAudio1 API51.0GladiaAudioToTextLive V2Pre-recorded V2Transcription V15 APIs50.3APIClawAmazon Transcribe Pass-throughAssemblyAI EU Pass-throughAssemblyAI Pass-throughAudio5 APIs49.5DeepdubGender DetectionTTSVoice3 APIs48.7PuppetryText To Speech1 API45.4Arpeggi LabsVoice Conversion1 API44.7Azure OpenAI ServiceAudio1 API44.0University of California, San DiegoAudio1 API41.6Retell AIAdd Community VoiceClone Voice2 APIs39.4
Thin 8 Limited public surface area
Coheretranscriptions1 API38.3University of AmsterdamAudio1 API36.4Fish AudioModelOpenAPI v12 APIs34.9TrintExportTranscripts and FilesUpload and Transcribe3 APIs33.7SonixMediaTranscripts2 APIs33.6Freepikcloned-voicesvoiceover2 APIs28.2Happy ScribeOrders1 API26.6CreatifyText To Speech1 API26.4
This page carries no rating. Capabilities are not rated. A capability is a description of what a business does, not a thing a company publishes, so a Kin Score would have nothing to measure.
The edge table is a Pro feature. This page shows which providers and tags reach Speech & Voice. The underlying tag → capability edges — each with the quoted fragment of the provider's own OpenAPI that evidences it, a calibrated confidence score, and the contract-provenance gate it passed — are available through the API, along with company-level capability maps. Only edges at confidence ≥ 0.7 with evidence found verbatim in the source contract are published at all.

See plans →  ·  How the edges are graded →