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Kimi K3 is top-tier at cybersecurity

Kimi K3, developed by Moonshot, achieved top-tier performance on a private cybersecurity benchmark, offering strong recall, precision, and cost efficiency, while GPT 5.6 leads in recall and precision but at seven times the cost per run. Sol showed a significant leap in cyber capability at higher cost, and Fable refused to complete the evaluation.

read1 min views37 publishedJul 19, 2026
Kimi K3 is top-tier at cybersecurity
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Based on internal evals: ▪️ Kimi K3 is top-tier at cybersecurity There is chatter on X that Moonshot benchmark-overfit. These are stealth evals. Model has raw IQ. ▪️ Sol is a leap ahead in cyber capability At a significantly higher cost, but quite remarkable still. ▪️ Fable refuses everything We couldn’t get it to complete the run at all. What’s interesting is that Sol in comparison was much more open to helping with defensive cyber hardening TL;DR: frontier, open-weight cybersecurity capability is here. Try it on

deepsec.shfor defensive purposes.We ran Kimi K3 on a private cybersecurity benchmark. TL;DR: Kimi K3 is the workhorse for cyber security tasks at great recall/precision/price. GPT 5.6 is best recall/precision but at 7x higher cost per run. For context,

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