Meta launches Muse Voice Transcribe, its first real-time speech model on the Meta Model API
Confirmed
Status
- Claim
Confirmed
- Our reporting
- High confidence
- Importance
- 3 of 5
- Last verified
- 30 September 2026
Your AI and this story
- GPT-6 Astra126 days after its cutoff
- Claude Opus 5.565 days after its cutoff
- Gemini 4 Hydrogen156 days after its cutoff
- Grok 4.795 days after its cutoff
None of these four assistants can know about it. The closest, Claude Opus 5.5, stops 65 days before it.
Key facts
- Model id muse-voice-transcribe-1.0; wss://api.meta.ai/v1/asr/realtime and https://api.meta.ai/v1/asr/transcribe
- Price: $3.00 per 1,000 minutes ($0.18/hour)
- 25+ languages; diarization (20+ speakers), VAD and endpointing inside the same model; adaptive delay
- Meta claims #1 on Artificial Analysis streaming STT and the lowest diarization error rate among APIs tested
- Speech-to-text only; Meta offers no public TTS or speech-to-speech API (Muse voice mode and Realtime Avatar shown at Connect 2026-09-23 are consumer features)
What happened
Meta added its first audio model to the Meta Model API alongside Muse Spark, Muse Image and Muse Glimmer: a streaming ASR model aimed at developers building voice agents (typically chained STT -> Muse Spark -> third-party TTS).
Why it matters
It extends Meta’s paid-API push beyond text and images into speech, landing the same day as Microsoft’s MAI-Transcribe-2 amid a September 2026 price war in speech-to-text. Leaderboard claims are Meta’s.
Sources
4 sources from 3 sites. Numbers match the chips in the text.
4 sources: 3 primary, 1 press
Primary
- Meta - Build with Muse Voice Transcribe on Meta Model APIdev.meta.ai, official
- Meta Model API docsdev.meta.ai, docs
- Meta AI research blog - Introducing Muse Voice Transcribe (2026-09-01)research.meta.ai, official
Press
- The New Stack - Meta just beat OpenAI and Google at real-time transcriptionthenewstack.io, press
Changes
- Added the Meta AI research blog announcement (listed there as 2026-09-01)
- Filed