GPT-5-Codex now extends this unified setup with deeper engineering capabilities — even running "independently for more than 7 ...

OpenAI is rolling out the GPT-5 Codex model to all Codex instances, including Terminal, IDE extension, and Codex Web (codex.chatgpt.com).

Codex, a new AI model powering its Codex coding assistant with dynamic thinking for complex, agentic software engineering tasks.

The new model is specifically designed to handle complex software engineering projects and can help with vibe coding, too.

From cloud hand-offs to GitHub reviews, GPT-5-Codex is optimized for agentic coding and designed to supercharge developer workflows.