Project AURIONAI Use-Cases Research & Innovation
translation

SeamlessM4T v2 large

SeamlessM4T v2 large, a checkpoint of the SeamlessM4T family. 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.

MetaMetaUSASeamlessM4TFamily
Meta
Levelvariant
Classtranslation
Parameters2.31B
Contextnot in the notes
Released30 Nov 2023
Opennessopen weights restricted
Runs onnot in the notes
Statusactive

R&D Topics

Speech-to-speech translationproduced by

Identity

Developer
Meta
Family
SeamlessM4T
Released
30 Nov 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
2.31B sources
Active parameters
–
Checkpoint parameters
–
Note
Parameter count from the safetensors index on Hugging Face.
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
Model card lists 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.

Lineage

The notes record no lineage for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. arxiv.org/abs/2312.05187 https://arxiv.org/abs/2312.05187
  2. huggingface.co/facebook/seamless-m4t-v2-large https://huggingface.co/facebook/seamless-m4t-v2-large
  3. replicate.com/cjwbw/seamless_communication https://replicate.com/cjwbw/seamless_communication
  4. ai.meta.com/blog/seamless-communication https://ai.meta.com/blog/seamless-communication/

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "SeamlessM4T v2 Large", https://aurion.semai.id/models/meta-seamless-m4t-v2-large/, records of October 2026.