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Composer 2

Composer 2 is Cursor’s agentic coding model, aimed at planning across long contexts, calling tools, and working inside the terminal. Its base model, post-training, and cost profile matter because they shape how IDE-native AI affects team throughput and deployment choices.

2 articles

Cursor’s new coding model rides on Kimi K2.5
Industry News/Mar 28

Cursor’s new coding model rides on Kimi K2.5

Cursor’s Composer 2 is cheaper than Claude Opus 4.6, but it was built on Kimi K2.5 and that changes the story.

Cursor’s Composer 2 started from Kimi
Model Releases/Mar 28

Cursor’s Composer 2 started from Kimi

Cursor says Composer 2 began on Moonshot AI’s Kimi base, then added more training. The company says the final model is very different.