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Nemotron 3 Ultra

Reviewed 2026-06-27
NVIDIAnvidia/nemotron-3-ultra-550b-a55b
Context
1M
Price
$0.5/$2.2
Tooling
4/5
Deploy
Cloud API

Best for

  • Agentic workflows and tool calling
  • Writing and editing code
  • Complex reasoning and analysis
  • Long documents (~1M context)

Skip if

  • You need open weights to self-host

Capability scores

Tool calling4/5
Multi-step reasoning4/5

Specifications

Context window
1M tokens
VRAM
N/A (cloud-hosted)
License
proprietary
Pricing
$0.5/M input · $2.2/M output
Deployment
Cloud API

Our take

Nemotron 3 Ultra from NVIDIA offers a 1M-token context window and is well-suited to strong tool calling, multi-step reasoning, coding, long-context work. Pricing is $0.5/M input · $2.2/M output, billed per token through the provider API.

Watch for the trade-offs: weights are closed, so you cannot self-host.

Compare to

Claude Haiku 4.5
Anthropic
200K context · $1/M input · $5/M output
Command A
Cohere
256K context · $2.5/M input · $10/M output
Command R+ (08-2024)
Cohere
128K context · $2.5/M input · $10/M output
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