Cursor’s new coding model Composer 2 is here: It beats Claude Opus 4.6 but still trails GPT-5.4

Cursor, a San Francisco AI coding platform from startup Anysphere valued at $29.3 billion, has launched Composer 2, a new in-house coding model now available inside its agentic AI coding environment that's a fine-tuned variant of Chinese open source model Kimi K2.5, and it offers drastically improved benchmarks from its prior in-house model.It's also launching and making Composer 2 Fast, a higher-priced but faster variant, the default experience for users.Here's the cost breakdown:Composer 2 Sta