OpenAI releases GPT-5.3-Codex with high cyber classification
OpenAI released GPT-5.3-Codex for long-running computer work after using early versions in its own training and deployment process, while treating it as High cyber capability.
TOWARD DOOM60confidence 89/100
Why it moved the index
Broad computer-use autonomy, long-running execution, practical involvement in its own development, and OpenAI's first precautionary High cyber classification directly increase consequential autonomy and misuse capability.
AUDIT TRAIL
Assessment history
- R1Toward 60 · confidence 89
New dated exact-model release supported by its launch and same-day system card.
11 Aug 2026