Index-Translate

Bilibili Tech

Oct 19, 2026 · Artificial Intelligence

Index-Translate: Training a 150-Language Multimodal Translation Model Family

Bilibili's Index-Translate series introduces a family of multimodal translation models supporting 150 languages across three sizes, detailing their training recipe using WSD scheduling, multi-expert reinforcement learning with adversarial reward supervision, model merging and distillation, plus specialized models for speech translation, syllable-controlled dubbing, and long-document translation, with extensive benchmark results.