Composer is a new model we built at Cursor. We used RL to train a big MoE model to be really good at real-world coding, and also very fast. cursor.com/blog/composer Excited for the potential of building specialized models to help in critical domains.
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Replying to @srush_nlp
So, Cheerah was indeed a model by @cursor_ai! I found it changes the way I use AI agents because it is so fast that I can stay in the loop when working with it. Seems Cursor is capitalizing on the huge amount of data they have from all people using their IDE

Oct 29, 2025 · 4:54 PM UTC
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