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Google drops TurboQuant for extreme LLM compression
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REDDIT · REDDIT// 18d agoRESEARCH PAPER

Google drops TurboQuant for extreme LLM compression

TurboQuant is a new vector quantization algorithm from Google Research that enables 3-bit KV cache compression for LLMs with near-zero accuracy loss. By combining PolarQuant for MSE optimization and 1-bit QJL for unbiased inner product estimation, it achieves up to 8x performance gains in attention computation on H100 GPUs.

// ANALYSIS

TurboQuant redefines the Pareto frontier for LLM efficiency, making massive context windows viable on memory-constrained hardware without typical accuracy trade-offs. PolarQuant uses random rotations to induce a concentrated Beta distribution for optimal scalar quantization, while a 1-bit Quantized Johnson-Lindenstrauss (QJL) transform ensures unbiased results for similarity search. The data-oblivious design allows for seamless integration into GPU kernels, maintaining quality neutrality down to 3 bits per channel while reducing memory footprint by 6x and significantly outperforming existing product quantization methods.

// TAGS
turboquantgoogle-researchllmquantizationinferencevector-dbresearchinfrastructure

DISCOVERED

18d ago

2026-03-25

PUBLISHED

18d ago

2026-03-24

RELEVANCE

9/ 10

AUTHOR

burnqubic