
We're pausing the rollout of GPT-5.3-Codex as we focus on our platform reliability. We'll be sure to share when it is rolling out again.
GitHub@github
📣 @OpenAIDevs GPT-5.3-Codex is now generally available and rolling out in GitHub Copilot. Early testing shows ➡️ It reaches new high scores on benchmarks we use to evaluate coding, agentic, and real-world capabilities ➡️ 25% faster performance than GPT-5.2-Codex on agentic coding tasks ➡️ Improved reasoning and execution in complex workflows Try it out in @code or Copilot CLI. github.blog/changelog/2026…
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