Story
Cursor Composer 2 is just Kimi K2.5 with RL
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1 discussion
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Overview
Fynn discovered a model ID, "kimi-k2p5-rl-0317-s515-fast," while experimenting with the OpenAI base URL in Cursor. Composer 2 is identified as Kimi K2.5 with reinforcement learning (RL) capabilities.
Summary from twitter.com.
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Community reactions
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Hacker News · twitter.com
Hacker News discussion ↗
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Based on 5 sampled comments from this thread. Analyzed 2026-03-20.
- Praise: Cursor's autocomplete model has garnered praise for its effectiveness, indicating a strong capability that resonates with users seeking reliable coding assistance.
- Praise: The integration of Cursor with VSCode enhances its appeal, leveraging a popular IDE to attract a broader developer audience.
- Concern: Concerns about Cursor's reliance on repackaged open-source models suggest potential ethical and licensing issues, raising questions about the sustainability of their business model.
- Concern: The perception that Cursor's competitive edge is thin, relying on existing models rather than developing proprietary technology, may undermine long-term viability in a rapidly evolving market.