Discover how OpenAI Codex, powered by ChatGPT 5, is changing coding by automating tasks and simplifying software development.
OpenAI had experienced professionals blindly grade outputs from OpenAI's GPT-4o, o4-mini, o3, and GPT-5 models, as well as Anthropic's Claude Opus 4.1, Google's Gemini 2.5 Pro, and xAI's Grok 4.
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