Cursor ditches VS Code, but not everyone is happy...

TL;DR

Cursor 3.0 ditches its VS Code fork and rewrites in Rust to manage AI agent swarms, sparking controversy over its radical shift away from traditional coding.

Key Points

• 1.Cursor 3.0 is a complete rewrite in Rust and TypeScript, abandoning its VS Code fork roots. The new interface focuses on managing swarms of AI agents across multiple repos, machines, and cloud environments simultaneously, positioning users as 'air traffic controllers' rather than coders.
• 2.Composer 2, Cursor's in-house model, was deceptively marketed as an original frontier model. Users discovered via metadata on Twitter that it is actually based on Moonshot's Kimi K2 model with reinforcement learning; Cursor later apologized for the lack of transparency and released a technical report.
• 3.The new multi-agent interface lets users run parallel agents with a visual status system. Yellow dots signal a need for human input (e.g., unsafe command permissions), blue dots indicate completed work, and a built-in browser lets users preview live apps without leaving the editor.
• 4.Not everyone is happy with the new direction, with critics comparing it too closely to OpenAI Codex. Despite controversy, the demo produced 13,000 lines of code within minutes, suggesting the agent-first workflow delivers dramatic speed gains regardless of philosophical objections.