What are the hardware requirements for Llama 3 1 Nemotron Ultra 253B V1 GGUF?

Llama 3 1 Nemotron Ultra 253B V1 GGUF requires a context window of 128K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed Llama 3 1 Nemotron Ultra 253B V1 GGUF and how large is it?

Llama 3 1 Nemotron Ultra 253B V1 GGUF is developed by unsloth, a model with 253b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

Where can I download or evaluate Llama 3 1 Nemotron Ultra 253B V1 GGUF?

Llama 3 1 Nemotron Ultra 253B V1 GGUF is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

Llama 3 1 Nemotron Ultra 253B V1 GGUF by unsloth — 128K context

Name: Llama 3 1 Nemotron Ultra 253B V1 GGUF
Author: unsloth

Llama 3 1 Nemotron Ultra 253B V1 GGUF is an open-source language model by unsloth. Features: 253b LLM, Context: 128K, License: other, Quantized, LLM Explorer Score: 0.2.

Arxiv:2411.19146 Arxiv:2502.00203 Arxiv:2503.18908 Arxiv:2505.00949 Conversational Custom code En Endpoints compatible Gguf Llama-3 Nemotron-nas Nvidia Pytorch Quantized Region:us

Model Card on HF 🤗: https://huggingface.co/unsloth/Llama-3_1-Nemotron-Ultra-253B-v1-GGUF

Llama 3 1 Nemotron Ultra 253B V1 GGUF Parameters and Internals

LLM Name	Llama 3 1 Nemotron Ultra 253B V1 GGUF
Repository 🤗	https://huggingface.co/unsloth/Llama-3_1-Nemotron-Ultra-253B-v1-GGUF
Base Model(s)	...ama 3 1 Nemotron Ultra 253B V1 nvidia/Llama-3_1-Nemotron-Ultra-253B-v1
Model Size	253b
Updated	2026-08-06
Maintainer	unsloth
Model Type	nemotron-nas
Supported Languages	en
GGUF Quantization	Yes
Quantization Type	gguf
Model Architecture	DeciLMForCausalLM
License	other
Context Length	131072
Model Max Length	131072
Transformers Version	4.52.3
Vocabulary Size	128256
Torch Data Type	bfloat16

Rank the Llama 3 1 Nemotron Ultra 253B V1 GGUF capabilities

Have you tried this model? Rate its performance — this feedback helps the ML community find the right model for their needs.

Instruction Following and Task Automation
Factuality and Completeness of Knowledge
Censorship and Alignment
Data Analysis and Insight Generation
Text Generation
Text Summarization and Feature Extraction
Code Generation
Multi-Language Support and Translation

Best Alternatives to Llama 3 1 Nemotron Ultra 253B V1 GGUF

Best Alternatives	Context / RAM	Downloads	Likes
...ama 3 1 Nemotron Ultra 253B V1	128K / 405.3 GB	3094	352
...3 1 Nemotron Ultra 253B V1 FP8	128K / 198.8 GB	732	12
...3 1 Nemotron Ultra 253B CPT V1	128K / 167.6 GB	101	6

Note: green Score (e.g. "73.2") means that the model is better than unsloth/Llama-3_1-Nemotron-Ultra-253B-v1-GGUF.