Project AURIONAI Use-Cases Research & Innovation
Meta
translationfamily

SeamlessM4T

One model for speech-to-speech, speech-to-text, text-to-speech and text-to-text translation and speech recognition for up to 100 languages.

MetaMetaUSA
Diagram of the SeamlessM4T v1 and v2 model architectures for speech and text translation.
Levelfamily
Classtranslation
Parametersnot in the notes
Contextnot in the notes
Released22 Aug 2023
Opennessopen weights restricted
Runs onnot in the notes
Statusactive

Lineage

MetaSeamlessM4T v2 large belongs to this familytranslation30 Nov 20232.31B
Where this comes from
Parent and child relations from model cards, Hugging Face base_model fields and the genealogy tables of the research notes. Confidence and evidence are the notes' own.

R&D Topics

Massively multilingual speech recognitionproduced bySpeech-to-speech translationexemplar

Identity

Developer
Meta
Family
not in the notes
Released
22 Aug 2023 sourcesannouncement page
Weights published
–
Record checked
12 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
dense transformer
Total parameters
– sources
Active parameters
–
Checkpoint parameters
–
Context length
not in the notes
Input
text, audio
Output
text, audio
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
open weights restricted
Licence
Creative Commons Attribution-NonCommercial 4.0 sources
Access routes
open weights download
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
not in the notes
Footprint
not in the notes
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
listed by developer
Regional languages
Javanese, Khmer, Lao, Burmese, Tagalog, Thai, Vietnamese, Malay
Jakarta hosting
unknown
Languages
Checkpoint model cards list 96 languages, including Indonesian
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Benchmark Results

The notes record no benchmark result for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. arxiv.org/abs/2308.11596 https://arxiv.org/abs/2308.11596
  2. github.com/facebookresearch/seamless_communication https://github.com/facebookresearch/seamless_communication
  3. replicate.com/cjwbw/seamless_communication https://replicate.com/cjwbw/seamless_communication
  4. huggingface.co/facebook/seamless-m4t-v2-large https://huggingface.co/facebook/seamless-m4t-v2-large

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "SeamlessM4T", https://aurion.semai.id/models/meta-seamless-m4t/, records of October 2026.