product · May 22, 2026
Fireworks AI and Cursor Partner on Composer 2.5 RL Training and Inference
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Fireworks AI posted on May 21, 2026, highlighting its partnership with Cursor AI for the Composer 2.5 launch where the Cursor team ran a massive RL program with RL rollouts on Fireworks alongside production inference. Nathan Tindall from Cursor thanked the Fireworks team in the quoted May 18 post announcing the Composer 2.5 launch. The post emphasizes training custom models over prompt engineering for competitive advantage in 2027 and notes Fireworks as the platform for the high-compute reinforcement learning and inference. Cursor confirmed Kimi K2.5 as the base model accessed via Fireworks RL and inference platform under commercial authorization from Moonshot AI. Fireworks AI reported 88 likes and 20 bookmarks on the post.