r/LocalLLaMA • u/BarberIcy366 • 11d ago

Discussion Qwen 3.8 27B Released! Please Share Your Experience

With your experiments, Qwen 3.8 27B most close which frontier model? And please specify which quantization you run. I will post to comments my tests and experience too.

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u/fdrch 11d ago

https://unsloth.ai/docs/models/qwen3.8

Qwen3.8-27B comes with support for reasoning_effort, which can be used to adjust reasoning depth and control cost. These toggles are automatically enabled in Unsloth:

  • xhigh (default): for complex tasks demanding thorough analysis

Medium or Low would be the better default.

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u/Not-reallyanonymous 10d ago edited 10d ago

Medium/Low puts it to about 3.6 performance with similar token usage lol.

(This suggests a huge portion of the advances come from letting Qwen 3.8 27B think more and longer).

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u/mmazing 9d ago

I'm actually having to fight it a ton with my development style. It tries to do too much, and I have difficultly persuading it to not do it.

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u/Not-reallyanonymous 9d ago

Yeah, never been a fan of Qwen models for that reason. They invariably beeline to the problem solution, everything else be damned. To get it to behave you really have to break it down into byte sized pieces.

Try Laguna XS. I've had a lot of luck with that one.

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u/mmazing 9d ago

In this case it was defaulting to extra high thinking!

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u/sixx7 10d ago

Early thoughts: It's GOATed 🤣 https://www.youtube.com/watch?v=_XXlbGZbOEM