NVIDIA
NVIDIA Nemotron 3 Ultra 550B
NVIDIA Nemotron 3 Ultra 550B-A55B — NVIDIA flagship reasoning model (550B total / 55B active MoE) tuned for agentic workloads, with a 1M-token context window.
nvidia-nemotron-3-ultra-550b-a55bCatalog preview. Paid requests for this model are not enabled yet.
Pricing
~99%USD. No uRouter markup. Live prices can change.
- Input
- $0.00625 / 1,000,000 tokens
- Output
- $0.03125 / 1,000,000 tokens
- Cache read
- $0.001875 / 1,000,000 tokens
- Cache write
- $0.00625 / 1,000,000 tokens
Model details
- Input
- text
- Output
- text
- Context window
- 1,000,000 tokens
- Maximum output
- 16,384 tokens
- Availability
- $216Uncapped capacity
- Updated
- 11/8/2026, 2:21:40 AM UTC
Capacity is reserved when your request is accepted.
Price history
Observed best prices · Last 24 hours · UTC
$0.00625/ 1,000,000 tokens
Capabilities
chatstreamingtoolsreasoning
Supported parameters
max_tokenstemperaturetop_pfrequency_penaltypresence_penaltystoptoolstool_choiceresponse_formatseedstructured_outputsListed capabilities describe the model. uRouter execution support is verified separately.