Speechmatics
Free trialLiveLast verified 27 Sept 2026
Batch and real-time transcription in 55+ languages with diarization, plus low-latency English TTS.
Example request
curl -X GET 'https://eu1.asr.api.speechmatics.com/v2/jobs/' -H "Authorization: Bearer $API_KEY"
Free tier, in plain English
New accounts start with $100 of usage credit and no card is needed. Once it runs out you add a card and pay per hour of audio.
Alternatives in Speech
AssemblyAISpeech-to-text for files and live audio in 99 languages, with speaker labels, subtitles and an LLM gateway.Free trialAudexumText-to-speech in 43 voices and 32 languages, plus speech-to-text transcription in 100+ languages.FreemiumCartesiaLow-latency text-to-speech over HTTP, SSE or WebSocket, plus speech-to-text and instant voice cloning.FreemiumDeepgramSpeech-to-text and text-to-speech transcription with streaming and pre-recorded audio, plus voice agents.Free trialElevenLabsText-to-speech in 70+ languages with 10,000+ voices, plus speech-to-text, voice cloning and dubbing.Freemium
All 12 Speech APIs →