simon_willison · Jun 17, 2026 · news
GLM-5.2 is probably the most powerful text-only open weights LLM
In brief
Chinese AI lab Z.ai released GLM-5.2 to their coding plan subscribers on June 13th, and then yesterday (June 16th) released the full open weights under an MIT license. Similar in size to their previous GLM-5 and GLM-5...
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