OpenAI’s GPT-5.5 is as Good as Mythos at Finding Security Vulnerabilities
ID: 36b32a2e-7b90-5c4f-9d4d-49caa59f3ad0
STIX ID: report--36b32a2e-7b90-5c4f-9d4d-49caa59f3ad0
Feed Name: Schneier on Security
The article reports that the UK AI Security Institute found OpenAI’s GPT-5.5 to be comparable to Claude Mythos in identifying security vulnerabilities, links to the Institute’s evaluation and related analyses of other models, and notes GPT-5.5 is generally available; it does not describe specific vulnerabilities, incidents, or active exploitation.
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