Speech-to-text developer tools
Every listing tagged speech-to-text, A to Z: 9 tools across 1 category. Listed in alphabetical order, not ranked.
AssemblyAI
Speech-to-text API: Universal-3.5 Pro transcribes recorded audio in 18 languages, Universal-2 in 99, and Universal-3.6 Pro Realtime streams in 32, with add-ons for diarization, PII redaction, translation and medical terms. An LLM gateway and text-to-speech sit on the same key.
Deepgram
Speech-to-text API: Nova-3 transcribes recorded files and live streams in 60+ languages, Flux adds turn detection for English voice agents, with diarization, keyterm prompting and redaction, billed per second. Aura-2 text-to-speech in 7 languages on the same key, and self-hosted containers on Enterprise.
ElevenLabs Scribe
ElevenLabs' speech-to-text models: Scribe v2 transcribes recorded audio in 90+ languages with keyterm prompting, Scribe v2 Realtime streams text back in about 150 ms, and a HIPAA-eligible medical model. Billed per hour of audio through the ElevenLabs API.
Gladia
Speech-to-text API for recorded and real-time audio: Solaria-1 transcribes 100+ languages and Solaria-3 six at a lower rate, with diarization, custom vocabulary, translation and PII redaction. Prepaid credits in euros, no subscription.
Google Cloud Speech-to-Text
Google Cloud's speech-to-text API: Chirp 3 and older models across a long list of languages and regions, plus telephony and medical models, with streaming, sync and batch recognition and a cheaper dynamic batch mode for audio that can wait.
Groq
GroqCloud runs a short list of open models, including gpt-oss and Whisper for speech-to-text, on Groq's own LPU hardware behind an OpenAI-compatible API, with a free tier and a pay-as-you-go Developer plan.
OpenAI Transcription
OpenAI's speech-to-text API: gpt-transcribe for recorded files with prompts, keywords and language hints, and gpt-live-transcribe for live audio over the Realtime API. whisper-1 and the gpt-4o transcribe models are deprecated and shut down on February 26, 2027.
Rev AI
Rev's speech-to-text API: Reverb models for English and 57 other languages, hosted Whisper Large, and human transcription on the same account, with async jobs, streaming over WebSocket or RTMP and forced alignment. Reverb's inference code is open source.
Speechmatics
Speech-to-text API for recorded and live audio in 55+ languages: Melia 1 follows speakers who switch language mid-sentence, Linden 1 is tuned for voice agents and Oak 1 for clinical terms. Cloud in the EU, US or Australia, or on-prem and on-device on Enterprise.