{"id":"llama-nemotron-ultra-253b","slug":"llama-nemotron-ultra-253b","name":"Llama Nemotron Ultra 253B","orgId":"nvidia","family":"llama-nemotron-ultra-253b","releaseDate":"2025-03-18","availability":"ga","openWeights":false,"license":null,"paramsTotal":253000000000,"contextWindow":null,"knowledgeCutoff":null,"modelCardUrl":"https://arxiv.org/abs/2505.00949","hfRepo":null,"modalities":["text"],"aliases":["Llama Nemotron Ultra 253B"],"aliasNote":null,"organization":{"id":"nvidia","name":"NVIDIA","slug":"nvidia","country":null,"url":null,"color":"#76B900","mark":"N"},"price":null,"answer":{"word":"No.","scope":"No crown in General LLM.","lead":"As of Oct 14, 2026, Llama Nemotron Ultra 253B from NVIDIA. No crown in General LLM. No independent primary score is on the current boards for General LLM.","confidence":"low"},"verdicts":[{"id":"v_overall_general-llm_llama-nemotron-ultra-253b_2025-03-18_open_RANKED","model":"llama-nemotron-ultra-253b","model_name":"Llama Nemotron Ultra 253B","category":"general-llm","category_name":"General LLM","slice":"overall","state":"RANKED","rank":null,"present_evidence":[],"missing_evidence":[],"margin":null,"confidence":"low","valid_from":"2025-03-18","valid_to":null,"configuration":null,"rationale":"No independent primary score is on the current boards for General LLM.","safeguard_flags":["no_primary_evidence"],"co_sota_with":[],"challengers":[],"methodology":"1.0","label":"Ranked · General LLM"}]}