UK AISI/CAISI finds Kimi K3 lags frontier cyber models in attack tests

ShakeelHashim · x · 2026-07-24

Kimi K3 trails frontier cyber models in UK AISI/CAISI tests

A joint UK AISI / CAISI evaluation found that Kimi K3 performs significantly below the latest frontier cyber-capable models on preliminary cyber tests.

On exploit-development tasks, Kimi K3 ranked well below leading frontier models.
On the simulated corporate-network attack benchmark “The Last Ones”, it averaged step 17 of 32, while the most cyber-capable U.S. models averaged 28.5 steps.
The report says Kimi K3 still outperformed GLM-5.2 on the same evaluations.
Its safeguards did not prevent attempts at cyber exploit development or offensive cyber operations during the tests.

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UK AISI/CAISI finds Kimi K3 lags frontier cyber models in attack tests

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