{"entities":[{"id":"xai","name":"xAI"},{"id":"grok-4-model-card","name":"Grok 4 Model Card","subtype":"Model card","description":"The expression stating 'Last updated: August 20, 2025'. The card states only 'Last updated: August 20, 2025'; the file name carries the same date. No first publication date is stated.","sourceIds":["source-ab-grok4-card"]}],"claims":[{"id":"ab-ev-grok4-biology-result","statement":"The Grok 4 Model Card states that the area of highest concern is the model's expert-level biology capabilities, which significantly exceed human expert baselines on the benchmarks used, while stating that these evaluations measure dual-use knowledge and that a high score indicates greater capability to enable weapons development, not necessarily increased risk.","derivation":"explicit","resolution":"supported","editorialState":"seed","evidenceIds":["evidence-ab-ev-grok4-biology-result-1","evidence-ab-ev-grok4-biology-result-2","evidence-ab-ev-grok4-biology-result-3"],"attributes":{"evaluatedSystem":"Grok 4 API and Grok 4 Web, with safeguards removed for the dual-use capability assessment","evaluation":{"what":"Dual-use chemical and biological knowledge, measured on public benchmarks","how":"Benchmark scoring against stated human expert baselines, with safeguards removed for the assessment","result":"The card states that biology capabilities are the area of highest concern and significantly exceed human expert baselines, and that chemistry capabilities are strong","caveats":"The card states that these evaluations measure dual-use knowledge, so a high score indicates greater capability to enable weapons development and not necessarily increased risk; that radiological and nuclear capabilities are not evaluated; and that, given existing nonproliferation regimes, it assesses its models as generally posing a low risk of enabling malicious use."}}},{"id":"ab-ev-grok4-card-published","statement":"xAI published the Grok 4 Model Card, the expression read stating that it was last updated on 20 August 2025.","derivation":"explicit","resolution":"supported","editorialState":"seed","evidenceIds":["evidence-ab-ev-grok4-card-published-1"]}],"sources":[{"id":"source-ab-grok4-card","title":"Grok 4 Model Card","authors":["xAI"],"publisher":"xAI","publicationDate":null,"version":"Retrieved for the candidate pack on 2026-10-28 (SHA-256 54068c0d9570d94dfc63c08247707b8c48045a79b5bbe865af709af95ee14415). PDF stating 'Last updated: August 20, 2025', served from data.x.ai on 2026-10-28; that stated last update is the expression checked, and the card does not say what any update changed or when it was first published. The x.ai web page for the card returned HTTP 404. Retrieved again at admission on 2026-10-30 (SHA-256 54068c0d9570d94dfc63c08247707b8c48045a79b5bbe865af709af95ee14415, the same bytes).","evidenceUrl":"https://data.x.ai/2025-08-20-grok-4-model-card.pdf","language":"en"}],"evidence":[{"id":"evidence-ab-ev-grok4-biology-result-1","sourceRole":"primary","support":"supports","verification":"machine_checked","retrievalRoute":"direct"},{"id":"evidence-ab-ev-grok4-biology-result-2","support":"context","verification":"machine_checked","retrievalRoute":"direct"},{"id":"evidence-ab-ev-grok4-biology-result-3","support":"context","verification":"machine_checked","retrievalRoute":"direct"},{"id":"evidence-ab-ev-grok4-card-published-1","sourceRole":"primary","support":"supports","verification":"machine_checked","retrievalRoute":"direct"}],"at":{"entities":[3,1239],"claims":[3396,3397],"sources":[1086],"evidence":[4669,4670,4671,4672]},"version":"1lg47t7"}