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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 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.
Yes, Codex 3.0 by OpenAI is free to use.
Some popular alternatives to Codex 3.0 by OpenAI include Den, SuperX, Siteline, Inspector. Compare their monthly traffic and features above.