01.AI

Beijing, CN· founded 2023· series-a· website ↗

Kai-Fu Lee's frontier lab. Ships the Yi family (open-weight Yi-1.5 6B/9B/34B, closed Yi Lightning). Bilingual EN/ZH; Yi Lightning briefly topped LMSys Chatbot Arena.

1 tool in the directory

Yi (01.AI)

Agents · Yi-Lightning (MoE), Yi-Large, Yi-1.5 (6B/9B/34B), Yi-VL, Yi-Coder — in-house 01.AI foundation models

8.4

Foundation models from 01.AI — open-weight Yi family plus frontier Yi-Lightning and Yi-Large

Freemium· Open-source Yi models free under permissive license; hosted API via platform.lingyiwanwu.com with pay-per-token pricing (Yi-Lightning positioned as a low-cost frontier tier; Yi-Large priced higher; exact per-token rates on the platform dashboard). Enterprise custom-training and consulting on quote.Self-hosted coding assistantBilingual English-Chinese chatbot