Kimi K3
READER SUMMARYMoonshot AI's frontier Kimi model, assessed by UK and US government evaluators for exploit development and autonomous multi-step cyber operations.
Why this model scores 80.4
Kimi K3 trails the latest US closed models but completed a long simulated corporate attack once in ten runs and its safeguards did not block offensive cyber work. Public availability and planned open weights increase deployment and residual control difficulty, while limited reliability and the preliminary scope of testing constrain the capability and autonomy scores.
News tied to Kimi K3
The model score of 80.4 rates this model's risk profile. The overall Doom Index of 67.7 measures the accumulated evidence trajectory. These values answer different questions.
Each article's signed Doom Index movement is divided equally among the exact models named on that article. This prevents multi-model evidence from being counted in full on several model pages. The model's risk score itself never changes the overall index.
UK and US evaluators find Kimi K3 can autonomously attack a simulated enterprise
A joint AISI and CAISI assessment found Kimi K3 below leading US cyber models but able to complete a 32-step simulated corporate-network attack in one of ten attempts, with safeguards that did not prevent offensive operations.
- Full item movement
- +2.73
- Kimi K3 equal share
- +2.73
Model score history
- R1Doom Score 80.4
Initial independent source-backed profile for the exact released model.
11 Aug 2026