GPT-5.3-Codex is here!
*Best coding performance (57% SWE-Bench Pro, 76% TerminalBench 2.0, 64% OSWorld).
*Mid-task steerability and live updates during tasks.
*Faster! Less than half the tokens of 5.2-Codex for same tasks, and >25% faster per token!
*Good computer use.
Codex now runs inside @jetbrains IDEs
Plan, write, test, review, and ship code without leaving your code editor
Starting today, you can use Codex with your ChatGPT plan in IntelliJ, PyCharm, WebStorm, and Rider, powered by GPT-5.2 Codex