Meta launches Muse Voice Transcribe, its first real-time speech model on the Meta Model API
On 2026-09-03 Meta Superintelligence Labs released Muse Voice Transcribe (muse-voice-transcribe-1.0), a streaming and file speech-to-text model on the Meta Model API at $0.18/hour that Meta says ranks #1 on the Artificial Analysis streaming STT leaderboard, with built-in diarization for 20+ speakers.
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.
Changelog
- 2026-09-29: created
Models
- Muse Voice Transcribe 1.0 Meta · current
Related events
- Meta releases Muse Spark 1.1 and opens the Meta Model API public preview ★★★
- Meta Connect 2026: VR Glasses, Ray-Ban Meta Gen 3, camera-free audio glasses and Muse everywhere ★★★★
- Microsoft launches MAI-Transcribe-2, claiming the most accurate and cheapest speech recognition at $0.10/hour ★★★
Sources (3)
- officialMeta - Build with Muse Voice Transcribe on Meta Model API
- docsMeta Model API docs
- pressThe New Stack - Meta just beat OpenAI and Google at real-time transcription
id: 2026-09-03-meta-muse-voice-transcribe · updated 2026-09-29 · open in the interactive timeline