flâneur

building a bigger qwen out of two qwen models

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a crash course in model chimerism

tl;dr: Take a giant Qwen3 MoE model, collapse its experts into a dense stack that matches Qwen3-8B’s width, then interleave those dense MoE blocks with the 8B blocks to create a deeper hybrid. Validate that the transplanted blocks actually matter, fix the ‘hot’ ones, and end with a model that’s both larger and reasonably sane. the layers of the final model Why does this work at all? Qwen3-8B and Qwen3-235B-A22 share the same hidden size and attention head dimension. If hidden size matches, you can line up linear layers across both networks without inventing sketchy adapters. The other…

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