GitHub Copilot launches GPT-5.3-Codex

GitHub@githubFeb 9, 2026

📣 @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

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Launched Feb 9, 2026View post

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