Last refreshed 2026-10-17. Next refresh: weekly.
Why use Nemotron 3 Ultra on OpenRouter?
OpenRouter offers Nemotron 3 Ultra. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare Nemotron 3 Ultra across 8 providers to find the best fit for your use caseInput / 1M
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Output / 1M
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Cache
Not sourced
Batch
Not sourced
Setup recipe
Docs fallbackInstall
Use the provider REST API or SDKAuth
Create a provider API keyCall
model: nvidia/nemotron-3-ultra-550b-a55bModel ID
nvidia/nemotron-3-ultra-550b-a55bRequest example
Curated snippets for this provider are not sourced yet. Use OpenRouter documentation with model ID
nvidia/nemotron-3-ultra-550b-a55b.Gotchas
- Use provider model ID "nvidia/nemotron-3-ultra-550b-a55b", not the LLMReference slug "nemotron-3-ultra".
Compare Nemotron 3 Ultra Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenRouter | — | — |
| DeepInfra | $0.50 | $2.20 |
| Baseten API | $0.60 | $2.40 |
| Venice AI | $0.63 | $3.13 |
| Fireworks AI | $0.60 | $2.40 |
Capabilities
ReasoningJSON / Tool use
About Nemotron 3 Ultra
NVIDIA's open frontier-reasoning model (550B total / 55B active MoE, hybrid Transformer-Mamba). 300+ tokens/second. 1M-token context. Announced at Computex 2026. Pricing: ~$0.60/$2.60 per 1M tokens (provider median); free tier on some providers.
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Model Specs
Released2026-06-04
Parameters550B
Context1M
ArchitectureMixture of Experts