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ChatGPT's Codex Feature Just Got A Big Upgrade

ChatGPT's Codex Feature Just Got A Big Upgrade
technology10/4/2025

OpenAI has now introduced a big upgrade to its ChatGPT Codex feature. We'll explain what this means for you and what it can do.

OpenAI has introduced GPT-5 Codex, a version of GPT-5 that is fine-tuned for coding agent workflows and built to better support developers working across varied environments. Rather than just responding to prompts, GPT-5 Codex is designed to think mo... [4140 chars]