Tencent Hy4-preview shrunk to 214GB via Sherry quantization
alejandroll10 · x · 2026-09-02
Tencent announced shrinking Hy4-preview from 1.5TB to 214GB using the Sherry quantization method, packing weights to 1.25 bits each. It enables stitching existing GPUs across machines. Using MIX-STQ10, calibration data selects bit-width per layer (some down to 1.31-bit). Accuracy drop is minimal vs BF16: MCP Atlas 83.7→83.2, SWE-Bench 82.9→81.3. Weights and GGUFs are released.
Related event: Tencent Hunyuan's AngelSlim Shrinks Hy4-preview from 1.5TB to 214GB(5 posts)→
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