GLM-5.3 vs Kimi K3: 753B vs 2.8T. The Older Weights Just Won on Points.

Zhipu’s post-training special vs Moonshot’s trillion-parameter giant — the first real head-to-head of China’s two open-weight flagships, with receipts and asterisks. GLM-5.3 launched on August 14, 2026, the day I’m writing this. Its numbers are vendor-reported (v) and hours old. Kimi K3’s numbers are a mix of vendor-reported (v) and independently verified (i) figures, after … Read more