Cursor vs Codex
IDE-resident AI vs. cloud-native coding agent. Which one earns the daily slot?
Pick Cursor for daily IDE work. Pick Codex for parallel agentic tasks.
Cursor lives in your editor. It's a fork of VS Code with AI baked into the autocomplete, chat, and Composer flows you already use, and the iteration loop is fast because everything happens in the file you're already editing. OpenAI Codex (the rebooted, cloud-based version that became generally available in 2025) is a different shape: it spins up isolated sandboxes and runs longer-form tasks in parallel without you babysitting them. If you write code most days, Cursor is the IDE. If you're delegating multi-step coding work and reviewing the output later, Codex earns its slot. Some founders run both, with Cursor as the editor and Codex as the background workforce.
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