How to setup a local coding agent on macOS

290 points - yesterday at 5:34 PM

Source

Comments

Aurornis yesterday at 7:09 PM
> The benchmark prompt was:

> Write a compact Python function that parses a unified diff and returns the changed file paths. Then explain two edge cases.

> Each benchmark generated about 128 tokens.

Generating 128 tokens is probably not enough for good benchmark results. MTP speedup depends on how often the predicted tokens are accepted. In my experience, the very early output has a higher acceptance rate, so short testing can give false positive speedups.

llama.cpp includes a tool specifically for benchmarking that will sweep the arguments for you so you don't have to restart the server and send it prompts:

https://github.com/ggml-org/llama.cpp/blob/master/tools/llam...

EDIT: Also the section about downloading the models should have mentioned that llama.cpp has a "-hf" argument that will download the models for you. I appreciate the author for sharing their experience, but for beginners this might not be the best guide to use.

ig0r0 yesterday at 6:35 PM
I wrote a similar post some time ago just used ollama and opencode https://blog.kulman.sk/running-local-llm-coding-server/
c-hendricks yesterday at 6:28 PM
Not sure you really need huggingface-cli to download anything if you're just using llama.cpp. You can pass `-hf ...` and it will download the models for you. Set `LLAMA_CACHE` to change where the downloads go:

  LLAMA_CACHE="models" ./llama-server \
    -hf unsloth/gemma-4-31B-it-GGUF:UD-Q4_K_XL \
    ...
vladgur yesterday at 7:11 PM
I have used omlx.ai with great success to both download multiple mlx models (including gemma and qwen) suited for my hardware AND to be able to automagically launch both open-source and close-source (claude code, codex) harnesses using these models. All from a web or desktop UI

You would not need to follow a blog post with omlx IMHO

jumploops today at 12:09 AM
I've been quite impressed with DeepSeek v4 Flash running via antirez's ds4[0].

It feels like a GPT-4 class model in terms of "stored knowledge" but is better at long-horizon tool calling than any of the GPT-4 class models.

Running on a 128GB MBP M4 Max, I'm getting ~24 t/s on generation and ~200 t/s on prefill. I was expecting it to feel slow, and it certainly does when e.g. generating code, but it's surprisingly useful as a "machine orchestrator" for simple tasks.

For non-agentic usecases, it's a decent enough model to converse with, and has the benefit of being entirely self-contained/private.

[0]https://github.com/antirez/ds4

dofm yesterday at 6:36 PM
Useful stuff in here that I wish I'd seen a few days ago :-)

I am not convinced that the MTP setup for the QAT model adds very much in terms of speed on my M1 Max, but it is definitely worth experimenting with.

Fiddling about with local models has done so much for my conceptual understanding of what is going on.

FWIW and YMMV but I also found the Gemma 4 MTP head was occasionally breaking markup in Opencode, causing the thinking to display untidily and ultimately in some cases missing the stop token. So I've stopped using MTP there for now.

Recent Qwen 3.6 models have developer role support so it will occasionally surprise you with a structured multiple choice questionnaire.

reddit_clone yesterday at 6:59 PM
>64 GB

Thats the rub. I have an M4 with 48G. I wonder if it is worth testing this out.

My past attempts (with Ollama and various LLMs) were too slow to use.

mark_l_watson yesterday at 9:30 PM
Nice writeup, thanks.

I run something very similar except for directly using pi as the agentic harness I use little-coder that wraps pi with reasonable defaults for running local models. Even though my local setup is a bit slow, it is a thrill to do real work completely locally.

jmkni yesterday at 7:17 PM
FYI you can open Claude code in the terminal, point it at this article and just tell it to "do it", if you're feeling extra lazy
anigbrowl yesterday at 11:58 PM
This video is realtime. And shows the agent responding at a perfectly usable speed.

Alas, this video appears not have been linked to the text that describes it. Perhaps I should ask an AI to generate an artistic rendering of the author's description.

smetannik today at 12:21 AM
I wonder why something like LM Studio didn't work for the author?
deleted today at 12:53 AM
hanifbbz yesterday at 7:20 PM
Here's a visual post for using LM Studio and VS Code (and Pi): https://blog.alexewerlof.com/p/local-llms-for-agentic-coding

One way or another local AI is the future. I actually find weaker models more interesting because it keeps me sharp (at the cost of velocity of course).

reenorap yesterday at 9:07 PM
My biggest pet peeve with all these articles on local AI is the only thing they talk about is tokens per second. No one mentions the quality of the answers. No one. I don't mind waiting a little longer if the quality is better. Quickly serving me slop doesn't make it more useful. Are people really only looking at tokens per second?
bicepjai yesterday at 10:21 PM
I assumed lmstudio is the obvious choice after ollama. Is there a reason lmstudio is not used widely ?
deleted yesterday at 9:13 PM
everlier yesterday at 10:36 PM
You can also install Harbor and then it's:

harbor up omlx opencode

cdolan yesterday at 6:14 PM
Is there a link to the video? It did not render when I went to the page. Curious about the real-time feel of this
rectang yesterday at 7:58 PM
Does anybody run a local agent on a Mac using an outboard GPU?
attogram yesterday at 7:02 PM
8b max on a std 16gb macbook. Anything more and your mac is toast
metadaemon yesterday at 7:21 PM
Has anyone compared a setup like this to just using LM Studio?
namnnumbr yesterday at 6:36 PM
oMLX (https://github.com/jundot/omlx) makes running the mlx inference server quite easy for those interested in UI-based hosting. oMLX also supports mtp or dflash drafting.
LoganDark yesterday at 8:02 PM
I poured a couple days into custom Burn inference for Qwen3-Coder-Next only to find it doesn't come with a speculative decoder, so on my M4 Max I can't push it much further than 120t/s. That's still kinda slow, though still faster than llama.cpp's 70.9t/s and MLX's 80.6t/s with the same model. Claude Fable 5 is recommending I use the Qwen3 MTP -- I worry that will compromise the quality somewhat, but might give it a try to see if I can get more usable speeds.
sleepybrett yesterday at 7:32 PM
or you can just load up ollama, have it load a local model and point claude or opencode at it...

is this article old? It's not. I'm not sure why he went through all the bother of llama.cpp

datadrivenangel today at 3:13 AM
[dead]
jkwang today at 2:53 AM
[flagged]
jlintc today at 1:15 AM
[flagged]
teiji-tango today at 12:36 AM
[flagged]
flowbarai yesterday at 7:37 PM
[flagged]
deleted yesterday at 7:23 PM
aplomb1026 yesterday at 6:53 PM
[flagged]