The AI That Built Itself: Inside GPT-5.3-Codex and OpenAI's Cybersecurity Gamble

OpenAI's GPT-5.3-Codex achieves 77.3% on Terminal-Bench while building itself—the first AI to debug its own training. But unprecedented ...

Aman Kumar
Aman Kumar·
14 min read·Feb 7, 2026
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Aman Kumar
Written byAman Kumar

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