Author

Jonathan Janke

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Preprint Aug 2026

GRPO Beyond English: A Large-Scale Study of GRPO in Non-English and Multilingual Settings

It is found that training to reason in the native language often leaves only a small gap to training for English reasoning, and RLVR beyond English can provide broad crosslingual gains, but also requires broad evaluation to detect language-specific regressions.

Konstantin Dobler, Federico Scozzafava, Jonathan Janke et al. · 0 citations