Practical Governance for Enterprise AI
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OpenAI released GPT-5.3-Codex, described as its most capable agentic coding model to date, combining the Codex and GPT-5 training stacks into a single model for code generation, reasoning, and general-purpose intelligence. The model is approximately 25% faster than its predecessors and sets new performance highs on key coding benchmarks. OpenAI's release notes do not publish detailed red-teaming results, leaving enterprise users without a full safety disclosure to underpin deployment risk assessments.