{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2026-09-03-meta-muse-voice-transcribe/","md":"https://postcutoff.com/e/2026-09-03-meta-muse-voice-transcribe/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"2026-09-03-meta-muse-voice-transcribe","date":"2026-09-03","date_precision":"day","short_title":"Meta launches Muse Voice Transcribe, its first real-time speech model on the Meta Model API","deck":null,"takeaway":null,"category":"model-release","category_label":"Model releases","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"Meta - Build with Muse Voice Transcribe on Meta Model API","url":"https://dev.meta.ai/resources/blog/meet-muse-voice-transcribe-streaming-speech-to-text/","type":"official","group":"primary","domain":"dev.meta.ai"},{"n":2,"title":"Meta Model API docs","url":"https://dev.meta.ai/docs/overview","type":"docs","group":"primary","domain":"dev.meta.ai"},{"n":3,"title":"Meta AI research blog - Introducing Muse Voice Transcribe (2026-09-01)","url":"https://research.meta.ai/blog/introducing-muse-voice-transcribe","type":"official","group":"primary","domain":"research.meta.ai"},{"n":4,"title":"The New Stack - Meta just beat OpenAI and Google at real-time transcription","url":"https://thenewstack.io/meta-muse-voice-transcribe/","type":"press","group":"press","domain":"thenewstack.io"}],"official":3,"filed":"2026-09-29","updated":"2026-09-30","orgs":["Meta"],"title":"Meta launches Muse Voice Transcribe, its first real-time speech model on the Meta Model API","summary":"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)"],"key_numbers":[],"tags":["meta","muse","speech-to-text","asr","streaming","diarization"],"science":null,"body_md":"## What happened\n\nMeta added its first audio model to the Meta Model API alongside Muse Spark, Muse Image and Muse Glimmer: a streaming\nASR model aimed at developers building voice agents (typically chained STT -> Muse Spark -> third-party TTS).\n\n## Why it matters\n\nIt extends Meta's paid-API push beyond text and images into speech, landing the same day as Microsoft's MAI-Transcribe-2\namid a September 2026 price war in speech-to-text. Leaderboard claims are Meta's.","disputed":[],"related":[{"id":"2026-09-23-meta-connect-2026","url":"https://postcutoff.com/e/2026-09-23-meta-connect-2026/","date":"2026-09-23","date_precision":"day","short_title":"Meta Connect 2026: VR Glasses, Ray-Ban Meta Gen 3, camera-free audio glasses and Muse everywhere","deck":null,"takeaway":"Meta is betting that glasses become the primary interface for an always-present AI agent; Connect 2026 tied the MSL model work (Muse Spark, Muse agent) directly to its hardware roadmap.","category":"product","category_label":"Products","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":17,"official":7,"filed":"2026-09-29","updated":"2026-09-30","orgs":["Meta"]},{"id":"2026-09-03-mai-transcribe-2","url":"https://postcutoff.com/e/2026-09-03-mai-transcribe-2/","date":"2026-09-03","date_precision":"day","short_title":"Microsoft launches MAI-Transcribe-2, claiming the most accurate and cheapest speech recognition at $0.10/hour","deck":null,"takeaway":null,"category":"model-release","category_label":"Model releases","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":4,"official":3,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Microsoft"]},{"id":"2026-07-09-meta-muse-spark-1-1-model-api","url":"https://postcutoff.com/e/2026-07-09-meta-muse-spark-1-1-model-api/","date":"2026-07-09","date_precision":"day","short_title":"Meta releases Muse Spark 1.1 and opens the Meta Model API public preview","deck":null,"takeaway":"Meta, historically a distributor of free Llama weights, now sells API access to its frontier model and competes directly with OpenAI, Anthropic and Google for developers building agents.","category":"model-release","category_label":"Model releases","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":3,"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Meta"]}],"people":[],"posts":[],"videos":[],"models":[{"id":"muse-voice-transcribe-1-0","name":"Muse Voice Transcribe 1.0","url":"https://postcutoff.com/m/muse-voice-transcribe-1-0/"}],"changes":[{"date":"2026-09-30","type":"edit","text":"Added the Meta AI research blog announcement (listed there as 2026-09-01)"},{"date":"2026-09-29","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-09-29","run":null,"sources_read":null,"updated":"2026-09-30","human_review":null,"version":{"date":"2026-10-04"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":126,"in_training_data":false},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":65,"in_training_data":false},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":156,"in_training_data":false},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":95,"in_training_data":false}],"short_url":null}