Cursor's Composer 2 AI model revealed to be rebranded Kimi K2.5 with reinforcement learning after user discovers unchanged model ID in OpenAI base URL

Fynn on X: "was messing with the OpenAI base URL in Cursor and caught this accounts/anysphere/models/kimi-k2p5-rl-0317-s515-fast so composer 2 is just Kimi K2.5 with RL at least rename the model ID https://t.co/fyUWbo1InF" / X

PostConversationFynn@fynnsowas messing with the OpenAI base URL in Cursor and caught this accounts/anysphere/models/kimi-k2p5-rl-0317-s515-fast so composer 2 is just Kimi K2.5 with RL at least rename the model IDQuoteCursor@cursor_ai18hComposer 2 is now available in Cursor.1:59 PM · Mar 19, 2026213.1K Views...