Codex 3.0 by OpenAI
Developer Tools
Codex can now build, test & debug on autopilot
With GPT-5.5, Codex evolves into a true cross-app coding agent—navigating browsers, interacting with web apps, generating docs in Microsoft Office and Google Drive, and testing workflows like a real user. It sees, clicks, debugs, and iterates autonomously, bringing developers closer to reliable, end-to-end automated builds.
Codex 3.0 by OpenAI is a Developer Tools company. It launched on Product Hunt on Apr 24, 2026, with 296 upvotes.
Codex 3.0 by OpenAI timeline
- Codex can now build, test & debug on autopilot
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