Z.ai · First MLX build 28 Sept 2025
LongWriter-llama3.1-8b
MLX
Text llama3.1
A 8B parameter text generation model from Z.ai, with 2 MLX builds, from 6-bit to 8-bit.
- Parameters
- 8B From Hugging Face
- Quantisation
- 6-bit LongWriter-llama3.1-8b-6bit
- Memory needed
- 10 GB Estimate, unified memory
- Download
- 6.5 GB Weights, estimated
- Downloads
- 72 This build, last 30 days
- Task
- Text generation Text
- MLX builds
- 2 On mlx-community
- Devices
- Mac Apple silicon
Memory
Will it fit?Needs about 10 GB at 6-bit
8 GB
16 GB
24 GB
32 GB
64 GB
128 GB
Fits with headroomTight, close other appsWon’t fit
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/LongWriter-llama3.1-8b-6bit --prompt "Hello"MLX builds
2 on mlx-community| LongWriter-llama3.1-8b-6bit | 6-bit | 6.5 GB | 10 GB | 72 |
|---|---|---|---|---|
| LongWriter-llama3.1-8b-8bit | 8-bit | 8.5 GB | 12 GB | 48 |
Sizes are estimated from Hugging Face’s parameter counts and the quantisation. Downloads are for the last 30 days.