GLM-5.3 quantized to 1-bit with 83% size reduction, retaining 76% accuracy
JFPuget · x · 2026-08-29
Unsloth and zai quantized GLM-5.3 to dynamic 1-bit, reducing the model size from 1.5TB (BF16) to 217GB (an 83% reduction) while retaining approximately 76% top-1% accuracy. The previously released 2-bit version (239GB) retains about 81% accuracy and runs locally on 256GB Macs. Real-world tests show the quantized model performs well running a Snake game on Unsloth Desktop.
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