
MLX
An array framework for machine learning on Apple silicon, with a NumPy-style Python API.
- Stars
- 29k
- Forks
- 2.4k
- Licence
- MIT
- Language
- C++
- Last update
- 4 days ago
- Type
- Library
What it is
MLX is an open-source framework for building and running machine learning code on Apple silicon Macs. It provides array operations with a Python API that closely follows NumPy, plus higher-level packages for neural networks and optimizers. Its main distinguishing feature is a unified memory model, where arrays live in shared memory and can be used by the CPU or GPU without copying data.
- Install with pip and run array operations in Python using a NumPy-like syntax
- Explore the MLX examples repo, such as Transformer language model training or Whisper speech recognition
- Use mlx.nn and mlx.optimizers to build and train neural network models
- Use function transformations such as automatic differentiation and vectorization on your own code
Great for
- Researchers experimenting with machine learning models on a Mac with Apple silicon
- Developers who already know NumPy or PyTorch and want a familiar API
- People who want to run or fine-tune models like LLaMA or Whisper locally using the MLX examples
- Developers who want C++, C, or Swift bindings for Apple silicon machine learning
Not ideal for
- Users who need to deploy on Windows or non-Apple hardware: the README lists CPU and GPU devices, and the Linux install options mention CUDA and CPU-only packages, so cross-platform support is narrower than general frameworks
- People looking for a finished end-user application: MLX is a framework for building models, not a ready-made app
How to get it
- 1
Install with a package manager
You'll need: Python (version not stated in the README) · pip
Install on macOS
pip install mlxInstall CUDA backend on Linux
pip install mlx[cuda]Install CPU-only Linux package
pip install mlx[cpu] - 2
Run it
- Install MLX with pip install mlx on macOS
- Follow the quick start guide in the documentation at ml-explore.github.io/mlx
- Try a basic array operation in Python to confirm the install works
- Browse the MLX examples repo for a model to run
- 3
Get the most out of it
- Use the MLX examples repo for end-to-end models such as LLaMA, LoRA finetuning, Stable Diffusion, and Whisper
- Use mlx.nn and mlx.optimizers to build models with a PyTorch-like structure
- Try the C, Swift, or C++ APIs if your project is not in Python, via the linked mlx-c and mlx-swift repos
- Read the documentation for building from source if you need a custom build
Downloads
Strengths
- Familiar NumPy-like and PyTorch-like APIs lower the learning curve for many developers
- Unified memory lets operations run on CPU or GPU without transferring data, per the README
- Backed by Apple machine learning research and has examples for several well-known models
Trade-offs
- The README describes it as built for Apple silicon, so its main use case is limited to that hardware
- The README is truncated and does not give detailed performance numbers or a full feature list, so some claims need checking in the docs
How it compares
| Project | Stars | Type | Level | Updated | Best for |
|---|---|---|---|---|---|
| mlx (this) | 29k | Library | intermediate | 4 days ago | Researchers experimenting with machine learning models on a Mac with Apple silicon |
| tinygrad | 33.8k | Library | intermediate | 4 days ago | Developers who want to read and modify how a deep learning stack works internally |
| llmfit | 38.6k | CLI | beginner | 4 days ago | People deciding which local LLM to download for their laptop or desktop |
| voicebox | 59.2k | App | beginner | 30 days ago | People who want text-to-speech or voice cloning without sending audio to cloud services |
Stats synced from GitHub. The assessment above was drafted with AI from the project's README on 2026-10-29 and may miss recent changes — check the README before relying on a command. MIT licence: free to use, modify and distribute, including commercially, as long as you keep the copyright notice.