Zhipu GLM-5.3 DeepSWE Score Jumps to 69 via Post-Training Scaling

haider1 · x · 2026-08-20

Zhipu AI achieved a significant breakthrough with GLM-5.3. Using the same base model as GLM-5.2, scaling post-training alone pushed its DeepSWE score from 44 to 69, nearing Fable 5-level performance. This was achieved at a fraction of the cost and with a much smaller model.

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