{"id":"claude-opus-4-1-20250805","slug":"claude-opus-4-1-20250805","name":"Claude Opus 4.1 20250805","orgId":"anthropic","family":"claude-opus-4-1-20250805","releaseDate":"2025-08-05","availability":"ga","openWeights":false,"license":null,"paramsTotal":null,"contextWindow":null,"knowledgeCutoff":null,"modelCardUrl":"https://epoch.ai/benchmarks","hfRepo":null,"modalities":["text"],"aliases":["claude-opus-4-1-20250805_27K","Claude Opus 4.1 20250805","claude-opus-4-1-20250805_16K"],"aliasNote":null,"organization":{"id":"anthropic","name":"Anthropic","slug":"anthropic","country":null,"url":null,"color":"#D97757","mark":"A"},"price":null,"answer":{"word":"No.","scope":"Best recorded rank is #93 in Reasoning.","lead":"As of Oct 14, 2026, Claude Opus 4.1 20250805 from Anthropic. Best recorded rank is #93 in Reasoning. Last listed at #93 in Reasoning on 2025-08-05.","confidence":"low"},"verdicts":[{"id":"v_overall_reasoning_claude-opus-4-1-20250805_2026-10-14_open_NOT_SOTA","model":"claude-opus-4-1-20250805","model_name":"Claude Opus 4.1 20250805","category":"reasoning","category_name":"Reasoning","slice":"overall","state":"NOT_SOTA","rank":93,"margin":null,"confidence":"low","valid_from":"2026-10-14","valid_to":null,"configuration":null,"rationale":"Last listed at #93 in Reasoning on 2025-08-05.","safeguard_flags":["off_board"],"co_sota_with":[],"challengers":[],"methodology":"1.0","label":"Not SOTA · #93"},{"id":"v_overall_science_claude-opus-4-1-20250805_2026-10-14_open_NOT_SOTA","model":"claude-opus-4-1-20250805","model_name":"Claude Opus 4.1 20250805","category":"science","category_name":"Science","slice":"overall","state":"NOT_SOTA","rank":93,"margin":null,"confidence":"low","valid_from":"2026-10-14","valid_to":null,"configuration":null,"rationale":"Last listed at #93 in Science on 2025-08-05. That board does not award a crown.","safeguard_flags":["off_board"],"co_sota_with":[],"challengers":[],"methodology":"1.0","label":"Not SOTA · #93"}]}