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GLM-5.3-Flash is MIT-licensed and out-downloading its flagship sibling 21 to 1
zai-org/GLM-5.3-Flash was created the same minute as GLM-5.3 (2026-08-25T06:43 vs 06:42) but ships under a plain MIT license while the flagship is license:other, and it uses a different architecture entirely — Glm5NextForConditionalGeneration, model_type glm5_next. It has 189,793 downloads to the flagship's 8,804, a 21x gap, plus an unsloth GGUF conversion at 27,288 downloads created 2026-08-26. For anyone picking a self-hostable open model this week, the permissive license and the quantized community builds are on the Flash variant, not the headline one.
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