NVIDIA model product
Llama 3.1 Nemotron Ultra 253B
1 405B Instruct with a 128k context window.
Updated Sep 8, 2026. Default version: Llama 3.1 Nemotron Ultra 253B v1
LLMBoard Score29.4Llama 3.1 Nemotron Ultra 253B v1
Coverage20%6 benchmark families
Context windowN/ATokens
Official input priceN/AOfficial price unavailable
Llama 3.1 Nemotron Ultra 253B Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Llama 3.1 Nemotron Ultra 253B Benchmark Results
Benchmark scores for Llama 3.1 Nemotron Ultra 253B v1.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkBFCL v2 | Score74.10% | Rank02 | Participants5 | Percentile75.00% | EvidenceC | Evaluated |
| BenchmarkMATH-500 | Score97.00% | Rank08 | Participants32 | Percentile77.42% | EvidenceC | Evaluated |
| BenchmarkIFEval | Score89.45% | Rank22 | Participants68 | Percentile68.66% | EvidenceC | Evaluated |
| BenchmarkLiveCodeBench | Score66.31% | Rank27 | Participants75 | Percentile64.86% | EvidenceC | Evaluated |
| BenchmarkAIME 2025 | Score72.50% | Rank87 | Participants119 | Percentile27.12% | EvidenceC | Evaluated |
| BenchmarkGPQA | Score76.01% | Rank110 | Participants247 | Percentile55.69% | EvidenceC | Evaluated |
| BenchmarkLM Arena Text Style Control | Score1,347.45 rating | Rank145 | Participants210 | Percentile31.10% | EvidenceA | Evaluated |
| BenchmarkLM Arena Text | Score1,319.35 rating | Rank153 | Participants210 | Percentile27.27% | EvidenceA | Evaluated |
Llama 3.1 Nemotron Ultra 253B Arena Results
Preference and agent-evaluation results for the default version.
Sort by
Arena | Category | Rank | Rating / score | Votes | Observations | Result date |
|---|
| Arenatext style control | Categorymath | Rank123 | Rating / score1,380.50 | Votes209 | ObservationsN/A | Result date |
| Arenatext | Categorymath | Rank133 | Rating / score1,359.41 | Votes209 | ObservationsN/A | Result date |
| Arenatext style control | Categoryhard prompts english | Rank133 | Rating / score1,397.40 | Votes448 | ObservationsN/A | Result date |
| Arenatext style control | Categorycreative writing | Rank134 | Rating / score1,331.40 | Votes444 | ObservationsN/A | Result date |
| Arenatext style control | Categoryinstruction following | Rank134 | Rating / score1,351.13 | Votes660 | ObservationsN/A | Result date |
| Arenatext style control | Categoryhard prompts | Rank136 | Rating / score1,374.55 | Votes713 | ObservationsN/A | Result date |
| Arenatext | Categorycreative writing | Rank137 | Rating / score1,314.12 | Votes444 | ObservationsN/A | Result date |
| Arenatext style control | Categoryenglish | Rank138 | Rating / score1,375.79 | Votes1,491 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry software and it services | Rank139 | Rating / score1,387.12 | Votes588 | ObservationsN/A | Result date |
| Arenatext style control | Categorycoding | Rank143 | Rating / score1,391.16 | Votes367 | ObservationsN/A | Result date |
| Arenatext style control | Categoryoverall | Rank145 | Rating / score1,347.45 | Votes2,549 | ObservationsN/A | Result date |
| Arenatext | Categoryinstruction following | Rank146 | Rating / score1,307.78 | Votes660 | ObservationsN/A | Result date |
| Arenatext style control | Categorymulti turn | Rank147 | Rating / score1,342.53 | Votes374 | ObservationsN/A | Result date |
| Arenatext style control | Categoryexclude ties | Rank148 | Rating / score1,303.74 | Votes1,699 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry business and management and financial operations | Rank148 | Rating / score1,341.92 | Votes254 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry life and physical and social science | Rank148 | Rating / score1,360.62 | Votes498 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry writing and literature and language | Rank149 | Rating / score1,320.19 | Votes712 | ObservationsN/A | Result date |
| Arenatext | Categoryenglish | Rank150 | Rating / score1,344.99 | Votes1,491 | ObservationsN/A | Result date |
| Arenatext | Categoryindustry writing and literature and language | Rank151 | Rating / score1,300.02 | Votes712 | ObservationsN/A | Result date |
| Arenatext style control | Categorylonger query | Rank151 | Rating / score1,341.65 | Votes321 | ObservationsN/A | Result date |
| Arenatext | Categorymulti turn | Rank152 | Rating / score1,317.38 | Votes374 | ObservationsN/A | Result date |
| Arenatext | Categoryhard prompts english | Rank153 | Rating / score1,336.36 | Votes448 | ObservationsN/A | Result date |
| Arenatext | Categoryoverall | Rank153 | Rating / score1,319.35 | Votes2,549 | ObservationsN/A | Result date |
| Arenatext | Categoryhard prompts | Rank154 | Rating / score1,315.79 | Votes713 | ObservationsN/A | Result date |
| Arenatext | Categoryindustry life and physical and social science | Rank154 | Rating / score1,324.00 | Votes498 | ObservationsN/A | Result date |
| Arenatext style control | Categoryindustry entertainment and sports and media | Rank154 | Rating / score1,302.27 | Votes532 | ObservationsN/A | Result date |
| Arenatext | Categoryexclude ties | Rank155 | Rating / score1,263.28 | Votes1,699 | ObservationsN/A | Result date |
| Arenatext | Categoryindustry business and management and financial operations | Rank155 | Rating / score1,300.81 | Votes254 | ObservationsN/A | Result date |
| Arenatext | Categoryindustry software and it services | Rank155 | Rating / score1,326.89 | Votes588 | ObservationsN/A | Result date |
| Arenatext | Categoryindustry entertainment and sports and media | Rank157 | Rating / score1,276.19 | Votes532 | ObservationsN/A | Result date |
Llama 3.1 Nemotron Ultra 253B Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- N/A
- Official provider
- N/A
- Lowest third-party
- N/A
- Tracked offerings
- 1
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderNvidia | Provider model IDnvidia/llama-3.1-nemotron-ultra-253b-v1 | Regionglobal | Input / 1MN/A | Output / 1MN/A | Context128K | Updated |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Llama 3.1 Nemotron Ultra 253B Runtime Performance
Provider-specific output speed and catalog latency for Llama 3.1 Nemotron Ultra 253B v1. Runtime does not affect the capability score.
No runtime data
No provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
Llama 3.1 Nemotron Ultra 253B Specifications
Technical details for the model's default version.
- Version
- Llama 3.1 Nemotron Ultra 253B v1
- Released
- Apr 7, 2025
- Knowledge cutoff
- Dec 1, 2023
- Parameters
- 253B
- Context window
- N/A
- Max output
- N/A
- Inputs
- text
- Outputs
- text
- Open weights
- Yes
- License
- Llama 3.1 Community License
Llama 3.1 Nemotron Ultra 253B Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionLlama 3.1 Nemotron Ultra 253B v1 | Released | LLMBoard29.42 | Parameters253B | ContextN/A | Max outputN/A | Open weightsYes | LicenseLlama 3.1 Community License |
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What is Llama 3.1 Nemotron Ultra 253B?
Key information about Llama 3.1 Nemotron Ultra 253B and its available data.
1 Nemotron Ultra 253B is a large language model developed by NVIDIA using Neural Architecture Search (NAS), vertical compression, and multi-phase post-training. It supports SFT and reinforcement learning with GRPO for math, code, reasoning, chat, and tool calling, and is optimized for NVIDIA GPUs.
Data as of 2026-09-08.
FAQ
Common questions about Llama 3.1 Nemotron Ultra 253B.
When was Llama 3.1 Nemotron Ultra 253B released?
Llama 3.1 Nemotron Ultra 253B's default version was released on Apr 7, 2025.
How much does Llama 3.1 Nemotron Ultra 253B cost?
No official standard PAYG price is currently available for Llama 3.1 Nemotron Ultra 253B.
Who created Llama 3.1 Nemotron Ultra 253B?
Llama 3.1 Nemotron Ultra 253B was created by NVIDIA.
What is the context window for Llama 3.1 Nemotron Ultra 253B?
A context window is not available for the default version.
Is Llama 3.1 Nemotron Ultra 253B open weight?
Yes. The default version is marked as open weight under Llama 3.1 Community License.