{"id":"claude-sonnet-4-5-20250929-high","slug":"claude-sonnet-4-5-20250929-high","name":"Claude Sonnet 4.5 20250929 High","orgId":"anthropic","family":"claude-sonnet-4-5-20250929-high","releaseDate":null,"availability":"unreleased","openWeights":false,"license":"Proprietary","paramsTotal":null,"contextWindow":null,"knowledgeCutoff":null,"modelCardUrl":"https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset","hfRepo":null,"modalities":["text"],"aliases":["claude-sonnet-4-5-20250929-high-32k","Claude Sonnet 4.5 20250929 High"],"aliasNote":null,"organization":{"id":"anthropic","name":"Anthropic","slug":"anthropic","country":null,"url":null,"color":"#D97757","mark":"A"},"price":null,"answer":{"word":"Not yet.","scope":"Not released, so it cannot be state of the art.","lead":"As of Oct 14, 2026, Claude Sonnet 4.5 20250929 High from Anthropic. Not released, so it cannot be state of the art. Announced but not publicly usable, so it cannot hold General LLM.","confidence":"low"},"verdicts":[{"id":"v_overall_general-llm_claude-sonnet-4-5-20250929-high_2026-10-14_open_UNRELEASED","model":"claude-sonnet-4-5-20250929-high","model_name":"Claude Sonnet 4.5 20250929 High","category":"general-llm","category_name":"General LLM","slice":"overall","state":"UNRELEASED","rank":null,"present_evidence":[],"missing_evidence":[],"margin":null,"confidence":"low","valid_from":"2026-10-14","valid_to":null,"configuration":null,"rationale":"Announced but not publicly usable, so it cannot hold General LLM.","safeguard_flags":["no_primary_evidence"],"co_sota_with":[],"challengers":[],"methodology":"1.0","label":"Unreleased"}]}