Agents & InferenceSimon Willison

GLM-5.2 is probably the most powerful text-only open weights LLM

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Chinese AI lab Z.ai released GLM-5.2, a 753 billion-parameter open-weight language model under an MIT license, positioning it as the most powerful text-only open model available. Benchmarks show it leads in performance but consumes more tokens than competitors, while early tests highlight strong coding and creative output, though some results lag behind its predecessor. The model is now accessible via multiple providers at competitive pricing.

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