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China’s Z.AI releases GLM-5.3 as a top open-weight coding model

Z.AI said its GLM-5.3 performs better than similarly sized open models on coding benchmarks, while its own results show it still trails closed frontier systems.

Reported · Written up by our desk · Market Structure

Decrypt reports that China’s Z.AI has shipped GLM-5.3, presenting it as a leading open-weight coding model.

The outlet says Z.AI claims the release posts stronger results than other open models of comparable size on code benchmarks.

Decrypt adds that Z.AI’s own published numbers indicate the new model still trails closed frontier systems, and it also lags at least one open rival.

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