Congrats to the @cursor_ai (https://x.com/cursor_ai) team on the launch of Composer 2!

We are proud to see Kimi-k2.5 provide the foundation. Seeing our model integrated effectively through Cursor’s continued pretraining & high-compute RL training is the open model ecosystem we love to support.

Note: Cursor accesses Kimi-k2.5 via @FireworksAI_HQ (https://x.com/FireworksAI_HQ) hosted RL and inference platform as part of an authorized commercial partnership.

— Kimi.ai @Kimi_Moonshot (https://twitter.com/Kimi_Moonshot/status/2035074972943831491), responding to reports that Composer 2 was built on top of Kimi K2.5

Tags: kimi (https://simonwillison.net/tags/kimi), generative-ai (https://simonwillison.net/tags/generative-ai), ai (https://simonwillison.net/tags/ai), cursor (https://simonwillison.net/tags/cursor), llms (https://simonwillison.net/tags/llms), ai-in-china (https://simonwillison.net/tags/ai-in-china)