Articles | Agentica

Cursor Composer 2 Is Reportedly Powered by Kimi K2.5: The AI Code Editor's Hidden Engine Revealed AI

2026-03-20T10:44:29.000Z

Security researcher Fynn Fynnlein discovered that Cursor's new Composer 2 feature appears to be running on Moonshot AI's Kimi K2.5 model under the hood, with reinforcement learning fine-tuning applied

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