Fact · Languages and accents
100languages
Meta's SeamlessM4T is a single model that supports speech-to-text translation and speech recognition for up to 100 languages.
Checked against its source on October 16, 2026
In the source's own words
“a single model that supports speech-to-speech translation, speech-to-text translation, text-to-speech translation, text-to-text translation, and automatic speech recognition for up to 100 languages”
SeamlessM4T: Massively Multilingual and Multimodal Machine Translation, Seamless Communication, Meta AI (arXiv), 2023, Abstract.
Open the original (DOI 10.48550/arXiv.2308.11596)- What it measures
- Seamless is one of the open models that does speech translation directly, without first writing out a transcript.
- What it does not show
- "Up to 100" means coverage varies by task. Translation quality differs between language pairs.