Last refreshed 2026-06-15. Next refresh: weekly.
Why use Nemotron 3 Ultra on OpenRouter?
OpenRouter offers Nemotron 3 Ultra with pay-as-you-go pricing at $0.50/1M input tokens. 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.
Setup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: nvidia/nemotron-3-ultra-550b-a55bnvidia/nemotron-3-ultra-550b-a55bRequest example
nvidia/nemotron-3-ultra-550b-a55b.Gotchas
- Use provider model ID "nvidia/nemotron-3-ultra-550b-a55b", not the LLMReference slug "nemotron-3-ultra".
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.50 |
| Output tokens | $2.20 |
Capabilities
About Nemotron 3 Ultra
NVIDIA's open frontier-reasoning model (550B total / 55B active MoE, hybrid Transformer-Mamba). Highest Artificial Analysis Intelligence Index for any US open model (score: 48). 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.
FAQ
What does Nemotron 3 Ultra cost on OpenRouter?
On OpenRouter, Nemotron 3 Ultra costs $0.5 per 1M input tokens and $2.2 per 1M output tokens.
What is the context window for Nemotron 3 Ultra on OpenRouter?
Nemotron 3 Ultra supports a 1m token context window on OpenRouter.
What API model ID do I use for Nemotron 3 Ultra on OpenRouter?
Use the model ID nvidia/nemotron-3-ultra-550b-a55b when calling OpenRouter's API.
Who created Nemotron 3 Ultra?
Nemotron 3 Ultra was created by NVIDIA AI as part of the Nemotron 3 model family.
Is Nemotron 3 Ultra open source?
Nemotron 3 Ultra has open weights under NVIDIA Open Model according to the seed data, but that does not necessarily mean an OSI-approved open-source license.