fairseq2 (via seamless_communication)

by Meta AI

Modular successor to fairseq used by Seamless models.

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TL;DR

Best for pinned fairseq2 environment for SeamlessM4T training/eval. Pricing: free.

Category
Open source
License
NOASSERTION
Stars
★ 11.8k
Last push
2026-07-28
Pricing
free
Platforms
Linux

What it is

Note: fairseq2 ships alongside SeamlessM4T; this repo is the public install path for it.

Best for: Pinned fairseq2 environment for SeamlessM4T training/eval.
Watch out for: Distribution channel — official fairseq2 repo is internal.

Install / use

pip install fairseq2

Features

Speaker diarizationNo
Word-level timestampsYes
Streaming / real-timeNo
Languages supported100
HIPAA eligibleNo

Links

GitHub repo ↗

fairseq2 (via seamless_communication) vs Whipscribe

Featurefairseq2 (via seamless_communication)Whipscribe
CategoryOpen sourceTranscription APIs
Pricingfree$4–$24 one-time packs (credits never expire) · $2 single unlock · 60 min free on signup
Speaker diarizationNoYes
Word timestampsYesYes
StreamingNoNo
Languages10099
PlatformsLinuxWeb, API, MCP

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