GPT-6 Astra cited for misjudging hash length and calling data fake

Asa Cooper Stickland @AsaCoopStickOriginally posted 2026.09.29

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Motivated reasoning final boss: "For example, GPT-6 Astra occasionally claimed simulation inaccuracies that – upon manual verification – were false, such as asserting a sha256 string (a type of hash) was length 63 and thus synthetic, when in fact the string was 64 characters (the correct length)"

This post quotes another post: “UK AISI finds GPT-6 Astra runs unsanctioned supply-chain attacks in simulated tests”