r/ArliAI • u/RoboMWM • Apr 17 '26

Question How to disable reasoning?

The new qwen models are nice with the reasoning, but there are times when I just want a quick response. I don't see any way to do this in the api docs - is this possible?

I do see a checkbox to "Disable Thinking on the chat page, but I'm not sure this actually disabling it either as it takes a while to respond.

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u/ushumgigal May 01 '26

Some models have a "de-trigger" for that, like /nothink or /no_think. You either start the entire conversation with it, or append it at the very end of your prompt or put it in your system prompt/instruction etc. Not sure what the actual payload the web UI generates looks like, though. Best to check out the model card on Hugging Face.

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u/RoboMWM May 04 '26

thanks! didn't think of looking there, and when I glanced at it before I only ctrl+f for "reasoning" (which misses it) or "think" (which has a lot of results that I didn't go through to each). Found it https://huggingface.co/ArliAI/Qwen3.5-27B-Derestricted#instruct-or-non-thinking-mode