How much does Nemotron 3 Ultra cost?

Nemotron 3 Ultra costs $0.50/M input tokens and $2.20/M output tokens, with separate rates for Cache Read at $0.10/M tokens.

What is the context length of Nemotron 3 Ultra?

Nemotron 3 Ultra has a 262,144 token context window. It supports up to 262,144 completion tokens.

Does Nemotron 3 Ultra support tool calling and structured outputs?

Yes. Nemotron 3 Ultra accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

Which providers serve Nemotron 3 Ultra?

Nemotron 3 Ultra is served by 4 providers on OpenRouter: DeepInfra, KT, Baseten, and Venice. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.

When was Nemotron 3 Ultra released?

Nemotron 3 Ultra was released on June 4, 2026.

For the free endpoint, please do not upload any confidential information or personal data (such as voices or faces of people). Your use is logged for security purposes and to improve NVIDIA products and services. The logged session data for improvement purposes is not linked to your identity or any persistent identifier. For more information about NVIDIA's data processing practices, see Privacy Policy. By using this free endpoint, you consent to NVIDIA's collection, recording, and use of such information and the NVIDIA API Trial Terms of Service

NVIDIA: Nemotron 3 Ultra

nvidia/nemotron-3-ultra-550b-a55b

Model weights

Compare

NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it supports text input and output with a context window of up to 1M tokens. It is suited for long-running agentic workflows, including agent orchestration, coding agents, deep research, and complex enterprise tasks.

It is particularly strong at multi-step reasoning and planning, with high-throughput inference designed for high-volume agent pipelines. It is part of the NVIDIA Nemotron family of open models for agentic AI.

Modalities

In / out price

$0.50 / $2.20per 1M

Context

262K

Released

Jun 4, 2026

Providers

Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick: Balanced (price + speed), Nitro (fastest), or Floor (cheapest).

Latency / throughput


	$0.50	$2.20	$0.10	0.38s	133 tok/s	100.00%
	$0.60	$2.40	$0.12	0.23s	111 tok/s	99.38%
	$0.50	$2.20	$0.10	0.45s	93 tok/s	99.91%
	$0.625	$3.125	$0.1875	0.65s	64 tok/s	99.94%
Not used in Standard routing:Why these endpoints are not used
Flex	$0.40	$1.76	$0.08	0.55s	66 tok/s	100.00%

Input $0.50Output $2.20
133 tok/s100.00% uptime
Input $0.60Output $2.40
111 tok/s99.38% uptime
Input $0.50Output $2.20
93 tok/s99.91% uptime
Input $0.625Output $3.125
64 tok/s99.94% uptime
Not used in Standard routing:Why these endpoints are not used
Input $0.40Output $1.76
Flex
66 tok/s100.00% uptime

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Weighted average

Input

$0.3346/M tokens

Output

$2.352/M tokens

Nemotron 3 Ultra — Price history

Price history

No effective price data for this selection

		$0.308	$3.12	72.5%	8.6%
		$0.325	$2.20	43.7%	15.7%
		$0.338	$2.20	40.5%	30.1%
		$0.341	$2.40	53.8%	45.3%
Not used in Standard routing:Why these endpoints are not used
	Flex	$0.134	$1.76	83.2%	0.1%

Effective in $0.308Effective out $3.12
Token share
8.6%
Effective in $0.325Effective out $2.20
Token share
15.7%
Effective in $0.338Effective out $2.20
Token share
30.1%
Effective in $0.341Effective out $2.40
Token share
45.3%
Not used in Standard routing:Why these endpoints are not used
Effective in $0.134Effective out $1.76
FlexToken share
0.1%

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Uptime (3d)

100.00%

Availability (3d)

99.66%

Availability over the last 3 days

Last 72 hours

Availability 99.66%

3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability

99.97%

Without Routing

98.97%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

Benchmarks

Scores on standardized evaluations and this model’s own outputs on shared benchmark prompts. Higher percentages are better — and each rank shows where this model lands among the models evaluated on that source.

Benchmark score summary for NVIDIA: Nemotron 3 Ultra (Artificial Analysis, Design Arena and Vals AI)
Source	Benchmark	Score
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) Intelligence Index	11.8
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) Coding Index	49.3
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) Agentic Index	20.1
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) GPQA Diamond	86.7%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) HLE	28.4%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) IFBench	81.4%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) τ²-Bench Telecom	83.3%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) AA-LCR	79.3%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) τ-Bench Banking	14.2%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) GDPval-AA	26.0%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) CritPt	3.1%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) SciCode	40.3%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) Terminal-Bench Hard	36.4%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) Terminal-Bench 4.0	0.5%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) Terminal-Bench 2.1	53.9%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) AA-Omniscience Accuracy	21.2%
Artificial Analysis	Nemotron 3 Ultra 550B A55B (Reasoning) AA-Omniscience Non-Hallucination Rate	77.4%
Design Arena	Nemotron 3 Ultra Models Arena 3D Elo	1107
Design Arena	Nemotron 3 Ultra Models Arena Asciiart Elo	1093
Design Arena	Nemotron 3 Ultra Models Arena Code Categories Elo	1131
Design Arena	Nemotron 3 Ultra Models Arena Data Visualization Elo	1139
Design Arena	Nemotron 3 Ultra Models Arena Game Development Elo	1126
Design Arena	Nemotron 3 Ultra Models Arena SVG Elo	1061
Design Arena	Nemotron 3 Ultra Models Arena UI Component Elo	1128
Design Arena	Nemotron 3 Ultra Models Arena Website Elo	1129
Vals AI	Nemotron 3 Ultra Code Migration	4.9%
Vals AI	Nemotron 3 Ultra CorpFin v2	65.5%
Vals AI	Nemotron 3 Ultra EMB	31.7%
Vals AI	Nemotron 3 Ultra Finance Agent (v2)	37.7%
Vals AI	Nemotron 3 Ultra GPQA Diamond	86.1%
Vals AI	Nemotron 3 Ultra Harvey's Legal Agent Benchmark v1	0.4%
Vals AI	Nemotron 3 Ultra LiveCodeBench	86.0%
Vals AI	Nemotron 3 Ultra LegalBench	82.1%
Vals AI	Nemotron 3 Ultra Legal Research Bench	15.4%
Vals AI	Nemotron 3 Ultra MedCode	38.6%
Vals AI	Nemotron 3 Ultra MMLU Pro	85.8%
Vals AI	Nemotron 3 Ultra ProgramBench	0.0%
Vals AI	Nemotron 3 Ultra ProofBench v1	2.0%
Vals AI	Nemotron 3 Ultra SWE-bench	69.0%
Vals AI	Nemotron 3 Ultra TaxEval v2	73.1%
Vals AI	Nemotron 3 Ultra Terminal-Bench 2.1	50.9%
Vals AI	Nemotron 3 Ultra Vals Index	27.4%
Vals AI	Nemotron 3 Ultra Vibe Code Bench v1.1	7.6%

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Hermes Agent

Hermes Agent is an open-source, self-improving AI agent by Nous Research that runs persistently with memory across sessions, and builds reusable skills from experience. It comes with 40+ built-in tools, including web search, browser automation, and vision, plus scheduled automations and subagents.

9.26Btokens

use.ai clone

new

7.35Btokens

OpenClaw

OpenClaw is an open-source AI agent that connects to your messaging apps and takes real actions on your behalf, from running commands and browsing the web to managing files and sending emails.

6.87Btokens

cyber-train nexus eval

new

4.25Btokens

OpenHands

AI coding agent that can run commands, browse the web, call APIs

2.49Btokens

Rest of OpenRouter

1.74B

Top 5 Apps

669M

Not currently available through EU in-region routing. In-region routing docs

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NVIDIA: Nemotron 3 Ultra

Providers