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

📣

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