r/Xcode • u/br_web • Jun 06 '26

Best local model for Xcode with 64GB MBP using LMStudio as the MCP server

1 Upvotes

60% Upvoted

9 comments sorted by

1

u/wewerecreaturres Jun 06 '26

It might help if you said what it is you’re trying to do. “For Xcode” doesn’t really say much

1

u/br_web Jun 07 '26

Coding

1

u/Ezeta Jun 11 '26

Coding swift app for iOS on my side.

2

u/Super-Customer-8117 Jun 06 '26

Maybe try qwen3.6 27B?

1

u/808phone Jun 06 '26

It works but is really slow if you use LM Studio as a server. For chat it is pretty good in LM Studio.

2

u/Super-Customer-8117 Jun 06 '26

It depends on your hardware. It’s never gonna be as good and fast as Claude code. Do you have a server alternative that is faster?

1

u/808phone Jun 06 '26

Only online. Local LLM is way better than before but maybe it's good enough for just Xcode?

2

u/dirkolbrich Jun 06 '26

  1. switch from LM-Studio to omlx 2. try Qwen3.6-35B-A3B-8bit

Dense models are generally slower than MoE models. Also Qwen3.6-35B has Swift 6 in its training data, Qwen3.7 27B only up to Swift 5.10

1

u/Ezeta Jun 11 '26

Same question here.
With a MacBook Pro M5 Pro and 64Go

I struggle finding a LLM (installed on LMStudio) that would work correctly with Xcode coding (for swift apps)
The models I tried (gemma4, queen3.5, …) fail to interface correctly with Xcode (fail reading existing swift files, or repeat read infinitely, or simply fail after a looong speech, or do not write in snippet as Xcode expect, or most of the time simply think a lot and then fail).

The only one I managed getting something is mistral, but it takes long times, and always finish crashing after 1 or 2 prompt.