Ioannis (Yiannis) Tsiamas 👾
Ioannis (Yiannis) Tsiamas
(he/him)

Research Scientist
Meta Superintelligence Labs (FAIR)

Hi, I’m Yiannis (Γιάννης)*. I’m a Research Scientist in the Omnilingual team at FAIR, part of Meta Superintelligence Labs, in Paris. I work on evaluating and improving the multilingual capabilities of AI models. The goal is simple to state and hard to reach: AI that works for everyone, in every language, including the thousands of languages that today’s systems still can’t handle.

I joined Meta full-time in October 2026, where I also did two internships in 2024–2025. My work during the internships led to Omnilingual SONAR and Omnilingual MT: embeddings and translation for thousands of languages. Omnilingual MT received an Outstanding Paper Award at EMNLP 2026.

Before that, I did my PhD at UPC Barcelona on speech translation, and along the way I did research internships at Apple, Dolby and Zeta Alpha, after starting out in quantitative finance in Amsterdam.

*Γιάννης (Yiannis) is the everyday form of Ιωάννης (Ioannis), the name I publish under.

Download CV
News
  • Oct 2026: Omnilingual MT received an Outstanding Paper Award at EMNLP 2026 🏆 → paper
  • Oct 2026: Joined Meta as a Research Scientist in the Omnilingual team at FAIR Paris (Meta Superintelligence Labs).
  • Sep 2026: Defended my PhD at UPC Barcelona: Excellent, cum laude 🎓 → thesis
  • Mar 2026: Released Omnilingual SONAR (embeddings for 4,000+ language varieties) and Omnilingual MT (translation for 1,600+ languages).
Recent Publications
(2026). Omnilingual MT: Machine Translation for 1,600 Languages. In EMNLP 2026 (🏆 Outstanding Paper Award).
(2026). Omnilingual SONAR: Cross-Lingual and Cross-Modal Sentence Embeddings Bridging Massively Multilingual Text and Speech. arXiv.
(2025). BOUQuET: dataset, Benchmark and Open initiative for Universal Quality Evaluation in Translation. EMNLP 2025.
(2025). Improving Language and Modality Transfer in Translation by Character-level Modeling. In ACL 2025.