{"id":"grok-4-20-beta-0309-reasoning","slug":"grok-4-20-beta-0309-reasoning","name":"Grok 4.20 Beta 0309 Reasoning","orgId":"xai","family":"grok-4-20-beta-0309-reasoning","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":["grok-4.20-beta-0309-reasoning","Grok 4.20 Beta 0309 Reasoning"],"aliasNote":null,"organization":{"id":"xai","name":"xAI","slug":"xai","country":null,"url":null,"color":"#111111","mark":"x"},"price":null,"answer":{"word":"Not yet.","scope":"Not released, so it cannot be state of the art.","lead":"As of Oct 14, 2026, Grok 4.20 Beta 0309 Reasoning from xAI. 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_grok-4-20-beta-0309-reasoning_2026-10-14_open_UNRELEASED","model":"grok-4-20-beta-0309-reasoning","model_name":"Grok 4.20 Beta 0309 Reasoning","category":"general-llm","category_name":"General LLM","slice":"overall","state":"UNRELEASED","rank":null,"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"}]}