Exploring Qwen 3.5 4B's 294,912 neurons: one push turns the model into someone else
_AustinCalvert_ · x · 2026-10-27
Developer @vashinthewild used the neuron explorer tool to inspect Qwen 3.5 4B's 294,912 internal neurons and found that activating just one can completely change the model's personality, sharing the findings in a thread.
Related event: Single Neurons in Qwen3.5-4B Can Swap the Model's Personality(4 posts)→
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