AI Engineering

Quantization Explained Like You're Five: Q4 vs Q8 and When Quality Actually Drops

A comprehensive systems and mathematical guide to LLM weight quantization in 2026. We audit FP16, Q8_0, Q4_K_M, AWQ, and GPTQ, identifying the precise parameter thresholds where reasoning perplexity begins to degrade.

Sachin Sharma
Sachin SharmaCreator
Sep 2, 2026
3 min read
Quantization Explained Like You're Five: Q4 vs Q8 and When Quality Actually Drops
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A comprehensive systems and mathematical guide to LLM weight quantization in 2026. We audit FP16, Q8_0, Q4_K_M, AWQ, and GPTQ, identifying the precise parameter thresholds where reasoning perplexity begins to degrade.

Sachin Sharma

Sachin Sharma

Software Developer & Mobile Engineer

Building digital experiences at the intersection of design and code. Sharing weekly insights on engineering, productivity, and the future of tech.