OpenAI is rolling out the GPT-5 Codex model to all Codex instances, including Terminal, IDE extension, and Codex Web (chatgpt.com/codex).
Codex is an AI agent that allows you to automate coding-related tasks. You can delegate your complex tasks to Codex and watch it execute code for you.
Source: BleepingComputer.com
Even if you don’t know programming languages, you can use Codex to “vibe code” your apps and web apps.
But so far, it has fallen a bit short of Claude Code, which is the market leader in the AI coding space.
Today, OpenAI confirmed it’s rolling out the Codex-special GPT-5 model.
In a blog post, OpenAI stated the GPT-5 Codex model excels in real-world coding tasks, achieving a 74.5% success rate on the SWE-bench Verified benchmark.
In code refactoring evaluations, it improved from 33.9% with GPT-5 to 51.3% with GPT-5-Codex.
GPT-5-Codex is still rolling out. I don’t see it on my Terminal yet, even though I pay for ChatGPT Plus ($20).
OpenAI says it will be fully rolled out to everyone in the coming days.
