Muse Voice Transcribe is MSL's first real-time audio perception model -- rolling out today. SOTA in streaming speech-to-text, it handles speaker diarization, and endpointing natively in a single model.

The model decides when to listen. It waits a little longer on hard words and commits faster on easy ones, using adaptive delay to predict each token and increase accuracy. With adaptive delay, the model is near the pareto front on speed-accuracy tradeoff.

It holds up on messy, real audio too -- trained across 70+ languages (with 25 validated at launch), handles mid-sentence code-switching, and manages hour-long sessions with 20+ speakers. You can bias it toward names and domain terms as well.

Already powering dictation in the Meta desktop app and voice input in Muse Code. Live now on the Meta model API with a zero-data-retention tier.

@eliza_luth

wow, Meta is on fire. Congrats Mark. looks like a brilliant model.

mark is in grind mode rn Love to see it

Rule of thumb: If @pyannoteAI is missing from the benchmark, there's probably a reason. cc @finkd @AIatMeta @alex_conneau

Nice work; it seems there are a lot of American researchers there.

Nice to see so many releases from meta. Always rooting for meta. Btw What is the cost to transcribe an hour video? I have here explained why 0.1 usd per hour or less is the right price for transcription.

Going to be amazing for the meta glasses

Incredible performance that blows the existing SOTA at detecting voices out of the water, but it's a shame you're not releasing an open weights model version

Is social media Algorithms now run by medieval dictators? Does your followers read your posts & replies? - ELQUOR

The next constraint is still judgment. Once systems can hear continuously, they need intelligence that stays accurate as conditions change, not just a better transcript.

let's go! Just a week after Gemini 3.5 intelligence transcribe models! WIll put them to the test on @thursdai_pod 🫡 this week!

Bro no one cares Fable 5.1 around the corner fuck that

Would love to see how this performs on

Great release! Keep pushing!

Congrats!

Looks absolutely incredible. I wish it was open source but I understand this is a lot of work.

SOTA streaming STT with native diarization and adaptive delay is a serious flex well done.

I’m working on the same capabilities as this one, but with AI running locally on the device.

Good to see Meta is really trying hard to come back and win the AI race.

does it support multiple languages ? damn this is crzy good!

Super siiiick I’ll be testing this out Z. So when you gonna wrestle with E??

Streaming STT with native diarization in one model is nuts. Diarization post-processing is always the janky part.

The real headline here isn't 'real-time transcription,' it's a model deciding when to keep listening instead of committing early. That's the difference between a voice agent that feels natural and one that talks over you.

Why the model weights not open?

Meta just dropped Muse Voice Transcribe and it immediately took #1 on Artificial Analysis streaming speech-to-text. I’m actually shook. 😭🔥 Real-time ASR. 20+ speaker diarization. Endpointing. Code-switching. 25 validated languages. The numbers:
🎤 Streaming WER: 3.1% (ahead of Cartesia, ElevenLabs, GPT, Gemini)
👥 Diarization lead too
💻 Hold Fn on Mac and dictate into anything
💸 $0.18 per hour of audio This is Meta Superintelligence Labs’ first real-time audio perception model and it just walked onto the leaderboard like it owned the place. 👑 #Meta #MuseVoice #VoiceAI #ArtificialAnalysis #SpeechToText #AI #ASR #MetaAI

Bro your whole lab is Chinese?

Mark and @jack have been shipping on Twitter lately like they’re trying to get into YC

all the whatsapp voice messages came to fruition…

zuck, i know your posts aren't very popular on here, but I will be your friend. nice model.

Hey Jarvis (@grok) this looks very similar to the personal Jarvis lattice that I’ve created with you

Nice update, but you're a bit late" to the party. xAl and OpenAl already solved real-time streaming, diarization, and reasoning months ago. Meta needs to speed up, the game has changed.. Zero-data-retention???

Hey Mark I need your help on something and you need to fix Facebook automatically delete it my account got deleted his number snake I actually do follow community guidance I need your to fix that bug or else I will never ever ever again make another Facebook again

开源吗