Cursor Composer 2 被曝基于 Kimi K2.5
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2026 年 3 月 20 日，开发者 Fynn 在调试 Cursor 的 OpenAI 兼容接口时，返回的模型 ID 为 accounts/anysphere/models/kimi-k2p5-rl-0317-s515-fast，显示 Composer 2 基于 Moonshot AI 的 Kimi K2.5 做强化学习后训练。该推文一天内获得 44.4 万次浏览。10 月 4 日，DEV Community 报道称 Cursor 发布 Composer 2 时未披露其 Kimi K2.5 基座，正是 API 返回串暴露了这一真相。目前事件围绕基座来源未披露及授权问题持续发酵。
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- DEV Community · CursorSelectedCursor ships Composer 2, and the API response strings give away its undisclosed Kimi K2.5 base
On March 20, 2026, developer Fynn was debugging Cursor's OpenAI-compatible endpoint when the returned model ID came back as accounts/anysphere/models/kimi-k2p5-rl-0317-s515-fast — evidence that Composer 2 was post-trained with reinforcement learning on top of Moonshot AI's Kimi K2.5. The tweet hit 44.4 views within a day.
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