Cursor's new model "Composer 2.5" is an AI agent aiming for GPT-5.5-level coding performance at low cost

Anysphere, the maker of Cursor, unveiled Composer 2.5, a new coding AI model built for longer tasks and more complex instructions.

The company says it used large-scale reinforcement learning and synthetic tasks to boost performance across multiple benchmarks.

Composer 2.5 outperforms Composer 2 on several tests and is positioned as a lower-cost model aiming for GPT-5.5-level capability.

The launch highlights how coding tools are now competing on both raw quality and inference cost, not just model performance.