OpenAI Launches GPT-5-Codex: Smarter, Flexible AI for Coding
OpenAI has unveiled a major upgrade to its coding assistant with the release of GPT-5-Codex , a new version of Codex built on GPT-5 . The model introduces a unique ability to decide how much time it should spend on solving coding problems—ranging from just seconds to as long as seven hours . This dynamic approach has already helped it score higher in coding benchmarks compared to earlier models. OpenAI Launches GPT-5-Codex The rollout is underway for ChatGPT Plus, Pro, Business, Edu, and Enterprise users , with access also available through GitHub, IDEs, and the terminal. OpenAI says API support will follow soon. The launch comes as AI coding tools gain strong global momentum. Rivals like Claude Code, Cursor, and Windsurf have rapidly grown, while GitHub Copilot remains the market leader. Cursor recently surpassed $500 million in annual recurring revenue , and Windsurf was partly acquired by Google and Cognition after a fierce bidding war. Against this backdrop, GPT-5-Codex is seen...