Cursor Composer 2 is just Kimi K2.5 with RL
twitter.com
March 20, 2026
1 min read
Summary
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.
Key Takeaways
- The model ID for Composer 2 is identified as Kimi K2.5 with RL.
- The OpenAI base URL was accessed to reveal information about the model.
- There is a suggestion to rename the model ID for clarity.
Community Sentiment
MixedPositives
- Cursor's autocomplete model has garnered praise for its effectiveness, indicating a strong capability that resonates with users seeking reliable coding assistance.
- The integration of Cursor with VSCode enhances its appeal, leveraging a popular IDE to attract a broader developer audience.
Concerns
- 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.
- 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.
Source
twitter.com
Published
March 20, 2026
Reading Time
1 minutes
Relevance Score
61/100
🔥🔥🔥🔥🔥
Why It Matters
This page is optimized for focused reading: quick context up top, a clean summary block, and a direct path to the original source when you want the full story.