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nvidia/nemotron-3-ultra-550b-a55b
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Nemotron 3 Ultra
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...
6/4/2026
512,288 tokens
#55 Text (Math)
Specifications
Modalities
Input
text
Output
text
Supported Parameters
frequency_penalty
include_reasoning
logit_bias
max_tokens
min_p
presence_penalty
reasoning
reasoning_effort
repetition_penalty
response_format
seed
stop
structured_outputs
temperature
tool_choice
tools
top_k
top_p
Max Output Tokens
16,384Leaderboard
Text
🏆OverallELO: 1,425
#90🇨🇳ChineseELO: 1,462
#96🇰🇷KoreanELO: 1,351
#103🇬🇧EnglishELO: 1,437
#92frenchELO: 1,452
#78spanishELO: 1,422
#80russianELO: 1,402
#116💻CodingELO: 1,473
#89🧮MathELO: 1,446
#55✍️Creative WritingELO: 1,376
#118📝Instruction FollowingELO: 1,405
#107🌶️Hard PromptsELO: 1,442
#97💬Multi-TurnELO: 1,398
#133