Model reference · open weights

seamless-m4t-large

seamless-m4t-large is an open-weight audio or speech model from facebook, listed in the AxForge catalogue. AxForge can bring it up on EU-owned hardware for you on request — with the licence handled where one is required.

Licence fee required Audio facebook 1 variants 332k downloads/mo
Request a licence + hosting quote All served models Not on the shared API today — deployed on request.

About

What seamless-m4t-large is

SeamlessM4T v2 SeamlessM4T is our foundational all-in-one Massively Multilingual and Multimodal Machine Translation model delivering high-quality translation for speech and text in nearly 100 languages. SeamlessM4T models support the tasks of: - Speech-to-speech translation (S2ST) - Speech-to-text translation (S2TT) - Text-to-speech translation (T2ST) - Text-to-text translation (T2TT) - Automatic speech recognition (ASR). SeamlessM4T models support: - 🎤 101 languages for speech input. - 💬 96 Languages for text input/output. - 🔊 35 languages for speech output. 🌟 We are releasing SeamlessM4T v2, an updated version with our novel UnitY2 architecture. This new model improves over SeamlessM4T v1 in quality as well as inference speed in speech generation tasks. The v2 version of SeamlessM4T is a multitask adaptation of our novel UnitY2 architecture. Unity2 with its hierarchical character-to-unit upsampling and non-autoregressive text-to-unit decoding considerably improves over SeamlessM4T v1 in quality and inference speed. SeamlessM4T v2 is also supported by 🤗 Transformers, more on it in the dedicated section below. SeamlessM4T models We provide the extensive evaluation results of seamlessM4T-Large and SeamlessM4T-Medium reported in the paper (as averages) in the metrics files above. The evaluation data ids for FLEURS, CoVoST2 and CVSS-C can be found here Evaluating SeamlessM4T models To reproduce our results or to evaluate using the same metrics over your own test sets, please check out the Evaluation README here. Finetuning SeamlessM4T models Please check out the Finetuning README here. Transformers usage SeamlessM4T is available in the 🤗 Transformers library, requiring minimal dependencies. Steps to get started: 1. First install the 🤗 Transformers library from main and sentencepiece: 2. Run the following Python code to generate speech samples. Here the target language is Russian: 3. Listen to the audio samples either in an ipynb notebook: Or save them as a .wav file using a third-party library, e.g. scipy: For more details on using the SeamlessM4T model for inference using the 🤗 Transformers library, refer to the SeamlessM4T v2 docs or to this hands-on Google Colab

Summarised from the published model card. Read the full card on the HuggingFace links below.

Specifications

What it is

Makerfacebook
TypeAudio & music
Parameters (lead)2.3B
Variants1
Runs withtransformers
Released2023-11-29
Popularity332k downloads / month
Likes1,009
LicenceCommercial licence needed

How it works

How audio & music work

Audio or textinputAudio modelrecognise / synthesiseText or audiooutputSpeech-to-text turns audio into text; text-to-speech and music models turn text into audio.

Variants

Sizes & precisions

Open weights ship in several sizes and precisions. One page, all the variants — pick the one that fits your GPU. VRAM figures are estimates from model size.

VariantParamsPrecisionVRAMFits 16 GBWeights
seamless-m4t-v2-large2.3BBF16~5.3 GBWeights ↗

Using it via the API

Call it like any OpenAI endpoint

Once AxForge deploys seamless-m4t-large for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (seamless-m4t-large below is illustrative; you get the exact model name on deployment.)

$ curl -sS https://api.axforge.ai/v1/audio/transcriptions \
  -H "Authorization: Bearer $AXFORGE_API_KEY" \
  -F model="seamless-m4t-large" -F file=@audio.mp3

Details

Languages, data & research

Languages

af am ar as az be bn bs bg ca cs zh cy da

Tags

transformers safetensors seamless_m4t_v2 feature-extraction audio-to-audio text-to-speech seamless_communication automatic-speech-recognition af am ar as az be

Papers

Licence

Commercial licence needed

The weights are open but cc-by-nc-4.0 needs a commercial agreement for business use. AxForge can arrange that licence and host the model for you — you pay AxForge, we settle with the model’s maker. Ask us for a quote. Read the licence ↗

Sources

Weights & code

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