Benjamin Marie(@bnjmn_marie):Qwen3.8 Flash Next thinking modes: Low is not always worse than Medium, but I couldn’t identify clear cases where Low should be preferred over Medium. So I’d recommend Medium as the default for cheaper reasoning, and Xhigh when higher accuracy matters, especially for coding. I could be wrong, but Low really looks like Medium with additional instructions (that you can find in the chat template) to reason less, rather than a separately post-trained reasoning mode.

Benjamin Marie

@bnjmn_marie

Independent AI researcher (LLM, NLP). My blog, The Kaitchup - AI on a Budget:

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Benjamin Marie@bnjmn_marie

2026.10.06 00:35

Qwen3.8 Flash Next thinking modes: Low is not always worse than Medium, but I couldn’t identify clear cases where Low should be preferred over Medium. So I’d recommend Medium as the default for cheaper reasoning, and Xhigh when higher accuracy matters, especially for coding. I could be wrong, but Low really looks like Medium with additional instructions (that you can find in the chat template) to reason less, rather than a separately post-trained reasoning mode.

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