OpenAI just dropped GPT5 Codeex. If you thought Codeex was a great product, now it's powered by GPT5. It was only a matter of time.So, if you click the little get started button, look at this. VS Code Cursor, Windsor, VS Code Marketplace, Codeex Web. Today, we're releasing GPT5 Codeex, a version of GPT5, further optimized for agentic coding in Codeex.It was trained with a focus on realworld software engineering work. It's equally proficient at quick interactive sessions and at independently powering through ...