Disabling Qwen 3.8 27B's chain of thought improves coding efficiency

N34257 · reddit · 2026-08-25

Testing revealed that Qwen 3.8 27B's built-in thinking mode significantly slowed down performance. By disabling it and offloading reasoning to an external harness, the model retained high intelligence and instruction-following capabilities (correcting prompt errors) without noticeable accuracy drops, leading to much higher efficiency, though occasional loop monitoring is still required.

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