UK AISI / Caisi Preliminary Assessment of Kimi K3's Cyber Capabilities
Detailed ResultsThese results represent preliminary evaluations on a small set of public and private benchmarks. U.S. closed-weight models were evaluated with system-level safeguards disabled to reduce refusals and enable measurement of maximal capabilities. Publicly available versions of these models have these safeguards enabled.
- ▪Detailed ResultsThese results represent preliminary evaluations on a small set of public and private benchmarks.
- ▪U.S. closed-weight models were evaluated with system-level safeguards disabled to reduce refusals and enable measurement of maximal capabilities.
- ▪Publicly available versions of these models have these safeguards enabled.
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Story provenance
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Record
| Original publisher | NIST |
| Canonical URL | https://www.nist.gov/news-events/news/2026/07/uk-aisi-caisi-preliminary-assessment-kimi-k3s-cyber-capabilities |
| Publication time | Sat, 25 Jul 2026 04:20:21 +0000 |
| Retrieval time | 2026-07-25T06:14:52.248Z |
| Last seen | 2026-07-25T06:14:52.248Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | L47vdlgfscuZ · 2 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Detailed ResultsThese results represent preliminary evaluations on a small set of public and private benchmarks. U.S. closed-weight models were evaluated with system-level safeguards disabled to reduce refusals and enable measurement of maximal capabilities. Publicly available versions of these models have these safeguards enabled. Due to the specifics of Kimi K3’s hosting setup, UK AISI / CAISI ran a selective set of cyber evaluations. Detailed methodologies are provided in individual sections.Cyber Capability TrendsThe cyber capability of models is aggregated across multiple tasks from multiple benchmarks using an approach inspired by Item Response Theory (IRT). For details of the methodology please see prior published reports.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at NIST.
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