OpenAI Cyber Big Closed weights

GPT-5.4-Cyber

212 days since OpenAI announced it · 14 Apr 2026

GPT-5.4-Cyber is a closed-weights cyber model from OpenAI, announced 14 Apr 2026.

Input: —; per 1M tokens
Cache write: —; per 1M tokens
Cache read: —; per 1M tokens
Output: —; per 1M tokens
Context window: —; tokens
Parameters: —; not disclosed

No price on the lab’s own pages.

Announcement: openai.com/index/scaling-trusted-access-for-cyber-defense

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OpenAI · Big · Cyber

closed weights

A new one every ~90 days — due in ~83d.

GPT-6 Cyber +90d 5 Nov 2026
GPT-5.6 Cyber +92d 7 Aug 2026
GPT-5.5-Cyber +23d 7 May 2026
GPT-5.4-Cyber 14 Apr 2026

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Facts last updated 7 Nov 2026, from OpenAI’s own pages.