>Does it support MLX or metal on Macs?

This is answered from their Project Roadmap over on Github[0]:

Recently Completed: macOS (beta)

Under Development: MLX support

[0] https://github.com/lemonade-sdk/lemonade?tab=readme-ov-file#...

It’s an easy way to get started and maintain a local AI stack that concentrates on AMD optimization. It is a one stop install for endpoints for sst, tts, image generation, and normal LLM. It has its own webui for management and interacting with the endpoints.

It also has endpoints that are compatible with OpenAI, Ollama, and Anthropic so you can throw any tool that is compatible with those and it will just run.

It's alternative to LM Studio in a way that it's an abstraction over multiple runtimes. AMD part is that it supports FastFlowML runtime which is the only way to utilize NPU on Ryzen AI CPUs on linux.

I think LM Studio itself uses other software to actually make use of LLMs. If that other software does not support your NPUs, then you are not going to get much performance out of those. This Lemonade thing I am guessing is one such other software, that LM Studio could be using.