NVIDIA · First MLX build 30 Jun 2025

Llama-3.1-Nemotron-8B-UltraLong-1M-Instruct

MLX Text cc-by-nc-4.0

A 8B parameter text generation model from NVIDIA, with 3 MLX builds, from 4-bit to bf16.

Hugging Face
Parameters
8B
From Hugging Face
Quantisation
4-bit
Llama-3.1-Nemotron-8B-UltraLong-1M-Instruct-4bit
Memory needed
8 GB
Estimate, unified memory
Download
4.5 GB
Weights, estimated
Downloads
167
This build, last 30 days
Task
Text generation
Text
MLX builds
3
On mlx-community
Devices
Mac
Apple silicon

Memory

Estimated from the size of the weights, plus a fifth for context and working memory and 2 GB for macOS and your apps. Long contexts need more.

Run it

Terminal · mlx-lm
$ pip install -U mlx-lm
$ mlx_lm.generate --model mlx-community/Llama-3.1-Nemotron-8B-UltraLong-1M-Instruct-4bit --prompt "Hello"

MLX builds

3 on mlx-community
Click a column to sort. Smallest size and most downloads are highlighted.
Llama-3.1-Nemotron-8B-UltraLong-1M-Instruct-4bit 4-bit 4.5 GB 8 GB 167
Llama-3.1-Nemotron-8B-UltraLong-1M-Instruct-6bit 6-bit 6.5 GB 10 GB 108
Llama-3.1-Nemotron-8B-UltraLong-1M-Instruct-bf16 bf16 16.1 GB 20 GB 31

Sizes are estimated from Hugging Face’s parameter counts and the quantisation. Downloads are for the last 30 days.