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UK AI Security Institute
UK government frontier-AI evaluation body; confirmed GPT-5.5 and Mythos both clear the 32-step autonomous attack benchmark.
10 of 10 entries (9 events, 1 interactions)
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#14 7 Oct
Mentioned in: Peers table AI amendments to cyber bill
Cybersecurity: Threats and Defences#14 27 Jul
Named as sitting in the Cabinet Office
European Tech Sovereignty: Whitehall's AI brief has no named owner#13 12 Jun
Washington pulls a live AI model
AI: Jobs, Power & Money#9 6 May
Published Frontier AI Trends Report confirming GPT-5.5 cleared the 32-step autonomous attack chain on 6 May
AI: Jobs, Power & Money: GPT-5.5 clears 32-step attack chain; two models in five days#8 1 May
Published evaluation finding GPT-5.5 matched Mythos on 32-step attack chain
AI: Jobs, Power & Money: AISI: GPT-5.5 matches Mythos on 32-step attack#6 15 Apr
Published independent evaluation on 15 April confirming Mythos attack-chaining but refuting single-task superiority
AI: Jobs, Power & Money: AISI confirms Mythos 20-hour attack chain#6 15 Apr
#6 10 Apr
Mentioned in: BoE flags agentic AI systemic risk
AI: Jobs, Power & Money#6 7 Apr
Mentioned in: Anthropic drops ASL, expands Glasswing partners
AI: Jobs, Power & Money#6 24 Feb