[Flere-Imsaho]

The UK gov disagrees with you:

https://arstechnica.com/ai/2026/04/uk-govs-mythos-ai-tests-h...

https://www.aisi.gov.uk/blog/our-evaluation-of-claude-mythos...

[ainch]

AISI did also say that GPT-5.5, which has been public for months, scores basically the same as Mythos on their cybersec evaluation. But there wasn't as much media about about that for some reason.

https://www.aisi.gov.uk/blog/our-evaluation-of-openais-gpt-5...

[saddlerustle]

AISI found the release version of mythos preview outperformed GPT-5.5 https://x.com/AISecurityInst/status/2054589763173126339

[cxvrfr]

Government of the least mismanaged country in the world?

[mhh__]

AISI is basically the crown jewel of the British government at this point in that its actually pretty good.

[HDBaseT]

You mean the most mismanaged country?