GPT-5.4-Cyber
GPT-5.4-Cyber is a limited-access language model from OpenAI, released April 14, 2026.
[Summary via Help Net Security, 2026-04-15; OpenAI announcement not directly accessible:] OpenAI is scaling its Trusted Access for Cyber (TAC) program to thousands of verified individual defenders and hundreds of teams responsible for defending critical software.
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Lab
OpenAI
Released
April 14, 2026
Weights
limited-access
Parameters
–
Context
–
Price / M tokens
–
Epoch ECI
not yet rated
Benchmark results
Epoch AI has not published results for GPT-5.4-Cyber yet. New models are usually evaluated within days to weeks.
Links
More from OpenAI
GPT-6.1 Terra · GPT-6.1 Sol · GPT-6 Sol · GPT-6 Luna · GPT-6 Astra · GPT-5.6 Cyber · Daybreak Red · Daybreak Blue