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One vLLM flag changed my AWQ-vs-fp16 cost result by 73 percentage points

This story is from 2026-08-21. It is preserved in the archive; the latest stories are on the live feed.

I wanted to know whether 4-bit quantization actually saves money, not memory. So I measured Qwen2.5-1.5B against its AWQ version on a T4, in dollars per million output tokens. First run said quantization was MORE expensive: batch 1 AWQ +24.8% vs fp16 batch 8 AWQ +14.0% batch 32 AWQ +16.0% batch 128…

Read the full story at r/LocalLLM ↗

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  1. 2026-08-21 09:06 · r/LocalLLM
    One vLLM flag changed my AWQ-vs-fp16 cost result by 73 percentage points

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