A substantial improvement in intelligence and behavior over Composer 2, particularly on long-horizon agentic tasks.

A substantial improvement in intelligence and behavior over Composer 2, particularly on long-horizon agentic tasks.

Cursor ships Composer 2.5, an AI coding model built on Kimi K2.5 and trained on 25x more synthetic tasks than its predecessor. It matches Opus 4.7 and GPT-5.5 on benchmarks at a…