# Bilibili Open-Sources Index-Translate, a Qwen3.5-Based Translation Family Covering 150 Languages

The Apache-2.0 release spans 2B, 9B and a preview 35B mixture-of-experts model, plus variants for voice-preserving dubbing, syllable-matched subtitles and document-length consistency.

- Published: 2026-10-02T06:31:19.109Z
- Canonical: https://polylog.news/ai/2026-10-02/bilibili-open-sources-index-translate-a-qwen3-5-based-transl
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Polylog editors](https://polylog.news)

The Index LLM team at the Chinese video platform Bilibili has released Index-Translate, a family of open machine-translation models built on Qwen3.5 in three sizes: 2B, 9B and a 35B mixture-of-experts configuration with roughly 3B active pa…

This story is for subscribers. Read it in full at https://polylog.news/ai/2026-10-02/bilibili-open-sources-index-translate-a-qwen3-5-based-transl (subscription information: https://polylog.news/pricing).