Nemotron Ultra On Baseten
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source ↗Nemotron Ultra on Baseten Announcing our Series F . Learn more
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Nemotron Ultra on Baseten
Jun 4, 2026 Go back
You can deploy Nemotron Ultra in one click with our Model APIs. Dedicated deployments are available for larger workloads. NVIDIA Nemotron Ultra, a 550B-parameter mixture-of-experts model with 55B active parameters, is now available through Model APIs with a 202K-token context window.
Call it with the OpenAI or Anthropic SDK, with tool calling, structured outputs, and opt-in reasoning.
1 curl -X POST https: //inference.baseten.co/v1/chat/completions \ 2 -H "Content-Type: application/json" \ 3 -H "Authorization: Api-Key $BASETEN_API_KEY" \ 4 -d '{ 5 "model" : "nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B" , 6 "messages" : [ 7 { 8 "role" : "user" , 9 "content" : "Implement Hello World in Python" 10 } 11 ], 12 "stream" : true , 13 "stream_options" : { 14 "include_usage" : true , 15 "continuous_usage_stats" : true 16 }, 17 "top_p" : 1 , 18 "max_tokens" : 1000 , 19 "temperature" : 1 , 20 "presence_penalty" : 0 , 21 "frequency_penalty" : 0 22 }' \ 23 --no-buffer For more information, see our docs or get started by talking to us .
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Notability
notability 5.0/10Deployment of existing large model on Baseten platform.