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Nvidia Nemotron 3 Ultra 550B Thinking
nvidia·nvidia/nemotron-3-ultra-550b-a55b-thinking·GA·Open weights·nemotron series·NEW
Largest Nemotron 3 model for maximum open-weight reasoning and agent accuracy
At a glance
Reference price$0.50 / $2.50 per 1M
Cache read $0.25 · NanoGPT
Lowest paid$0.50 / $2.50
NanoGPT Gateway
Context1,000,000
Output limit65,536
Capabilities
✓ Reasoning✓ Tool useStructured output✓ TemperatureAttachments
Modalities
Text
Knowledge cutoff—
Released / updated2026-06-04 / 2026-06-04
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 1 providers1 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| NanoGPT nvidia/nemotron-3-ultra-550b-a55b:thinking | Gateway | $0.50 | $2.50 | $0.25 | — | 1,000,000 | 65,536 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1NanoGPT$195.00
The cheapest paid channel is the only channel.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
Upstream provides no control info
1 / 1 providers expose no reasoning control (reasoning_options: []).
Related models
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Price historyone sample accumulated per data sync
Input listOutput listMin blended