lmstudio-ai / lmstudio-ai/mlx-engine
[Docs/Question] How to build and use custom mlx-engine with updated mlx-lm for Qwen3-Next-80B-A3B-Instruct-8bit?
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Description
I tried running `mlx-community/Qwen3-Next-80B-A3B-Instruct-8bit` in LM Studio but the next architecture isn't yet supported in the latest mlx-engine. This is most likely due to the latest mlx-lm release that had a bug.
It works though with the most recent version from GitHub. You can run the model successfully with:
```bash
uv run --with git+https://github.com/ml-explore/mlx-lm.git mlx_lm.chat --model mlx-community/Qwen3-Next-80B-A3B-Instruct-8bit --max-tokens 10000
```
Would it be appropriate to add some docs of how to build all modules - including mlx-engine - from source and using them in LM Studio?
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the stated mlx-lm command and reviewing how mlx-engine is built and consumed by LM Studio. Document the source-build steps for all required modules, including mlx-engine, and explain how to use those builds in LM Studio. Done means a newcomer can follow the instructions to run the Qwen3-Next model successfully.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100