Models

nemotron-3-nano-30b-a3b-free vs nemotron-3-ultra-550b-a55b-free

Context lengths are 256,000 tokens on nemotron-3-nano-30b-a3b-free and 1,000,000 tokens on nemotron-3-ultra-550b-a55b-free.

Nvidianemotron-3-nano-30b-a3b-freeNvidianemotron-3-ultra-550b-a55b-free
Nvidia logo
nemotron-3-nano-30b-a3b-free
Nvidia · text → text

NVIDIA Nemotron 3 Nano 30B A3B is a highly efficient small language Mixture of Experts (MoE) model developed by Nvidia. Designed to help developers build specialized agentic AI systems, it delivers exceptional compute efficiency and accuracy. Additionally, it features an impressive context length of 256,000 tokens to support extensive data processing.

Input$0.00 /M
Output$0.00 /M
Nvidia logo
nemotron-3-ultra-550b-a55b-free
Nvidia · text → text

NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model featuring an extensive 1,000,000-token context length. Built on a hybrid Transformer-Mamba mixture-of-experts (MoE) architecture, it operates with 55B active parameters out of a total of 550B parameters. This advanced structure is designed to support sophisticated reasoning and complex task orchestration.

Input$0.00 /M
Output$0.00 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

nemotron-3-nano-30b-a3b-free
nemotron-3-ultra-550b-a55b-free
Input /M
$0.00
$0.00
Output /M
$0.00
$0.00
Cache read /M
$0.00
$0.00
Context length
256,000
1,000,000
Max output
0
0
Time to First Token
-
-
Throughput
-
-
Modalities
text
text
Supported Parameters
reasoningtool callinglong context
reasoningtool callinglong context
API Formats
chat_completions
chat_completions

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

nemotron-3-nano-30b-a3b-freenemotron-3-ultra-550b-a55b-free

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

nemotron-3-nano-30b-a3b-freenemotron-3-ultra-550b-a55b-free

Throughput (tok/s)

-

TTFT (s)

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Uptime (%)

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Cost calculator

Estimate your monthly bill for the same workload on each model.

nemotron-3-nano-30b-a3b-free
$0.00 /mo
nemotron-3-ultra-550b-a55b-free
$0.00 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

How large is each context window?

nemotron-3-nano-30b-a3b-free accepts 256,000 and nemotron-3-ultra-550b-a55b-free accepts 1,000,000 input tokens.

What inputs and capabilities does each model support?

nemotron-3-nano-30b-a3b-free accepts text input and supports reasoning, tool calling and long context; nemotron-3-ultra-550b-a55b-free accepts text input and supports reasoning, tool calling and long context.

Can I call nemotron-3-nano-30b-a3b-free and nemotron-3-ultra-550b-a55b-free with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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