Nvidia

Llama 3.1 Nemotron Ultra 253B v1

Nvidia llama-3-1-nemotron-ultra-253b-v1
Model Information
Slug llama-3-1-nemotron-ultra-253b-v1
LLM.txt View
Release Date April 7, 2025
AIME 2025 0.725
GPQA 0.7601
Organization
Model Description
Llama-3.1-Nemotron-Ultra-253B-v1 is a large language model (LLM) optimized for advanced reasoning, human-interactive chat, retrieval-augmented generation (RAG), and tool-calling tasks. Derived from Meta’s Llama-3.1-405B-Instruct, it has been significantly customized using Neural Architecture Search (NAS), resulting in enhanced efficiency, reduced memory usage, and improved inference latency. The model supports a context length of up to 128K tokens and can operate efficiently on an 8x NVIDIA H100 node.

Note: you must include `detailed thinking on` in the system prompt to enable reasoning. Please see [Usage Recommendations](https://huggingface.co/nvidia/Llama-3_1-Nemotron-Ultra-253B-v1#quick-start-and-usage-recommendations) for more.
Available at 10 Providers
Provider Type Model Name Original Model Input ($/1M) Output ($/1M) Free Actions
Nvidia
Nvidia
llama-3.1-nemotron-ultra-253b-v1
nvidia/llama-3.1-nemotron-ultra-253b-v1 $0.00 $0.00
AIHubMix
AIHubMix
Llama-3_1-Nemotron-Ultra-253B-v1
nvidia/Llama-3_1-Nemotron-Ultra-253B-v1 $0.50 $0.50
Nebius Token Factory
Nebius Token Factory
Llama-3_1-Nemotron-Ultra-253B-v1
nvidia/Llama-3_1-Nemotron-Ultra-253B-v1 $0.60 $1.80
Kilo Code
Kilo Code
Code
NVIDIA: Llama 3.1 Nemotron Ultra 253B v1
nvidia/llama-3.1-nemotron-ultra-253b-v1 $0.60 $1.80
Blackbox AI
Blackbox AI
Code
NVIDIA: Llama 3.1 Nemotron Ultra 253B v1
nvidia/llama-3.1-nemotron-ultra-253b-v1 $0.60 $1.80
WaveSpeed AI
WaveSpeed AI
Chat Code
llama-3.1-nemotron-ultra-253b-v1
nvidia/llama-3.1-nemotron-ultra-253b-v1 $0.66 $1.98
Nano-GPT
Nano-GPT
Nvidia Nemotron Ultra 253B
nvidia/Llama-3.1-Nemotron-Ultra-253B-v1 - -
ValorGPT
ValorGPT
Llama 3.1 Nemotron Ultra 253B v1
nvidia-llama-3.1-nemotron-ultra-253b-v1 - -
LangDB
LangDB
llama-3.1-nemotron-ultra-253b-v1
llama-3.1-nemotron-ultra-253b-v1 - -
Writingmate
Writingmate
Chat Code
NVIDIA: Llama 3.1 Nemotron Ultra 253B v1
nvidia/llama-3.1-nemotron-ultra-253b-v1 - -