Unverified50% confidenceFactExact time
In GGUF, BF16 uses 16 bits per parameter, Q8_0 approximately 8 bits, Q4_K_M approximately 4 bits, Q3_K_M approximately 3 bits, and Q2_K approximately 2 bits.
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50%
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Long-term
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9/27/2026
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Related Claims
UnverifiedThe Q4_K_M quantization scheme averages approximately 4.8 bits per weight, while the Q8_0 quantization scheme uses 8 bits per weight.75% similarVerifiedFP32每个参数占4字节，FP16/BF16占2字节，INT8量化占1字节，INT4量化占0.5字节73% similarVerifiedIn GGUF quantization naming, Q4_K_M denotes a 4-bit quantization, Medium-precision variant using the K-Quant grouped quantization method72% similarUnverifiedThe tested models are from bartowski's GGUF quantization package, covering five precision formats: BF16, Q8_0, Q4_K_M, Q3_K_M, and Q2_K.71% similarUnverifiedGGUF格式的Q4_K_M是最主流的平衡选择，困惑度损失通常低于1%；Q8_0几乎无精度损失但文件体积是Q4的两倍69% similar
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