TurboQuant: The 3-Bit Breakthrough Making AI Faster and Smaller

Google Research's TurboQuant uses polar quant and Quantized Johnson-Lindenstrauss to shrink the KV cache to roughly 3 bits per value, delivering up to 8x speedups and sixfold memory savings on high-end GPUs without sacrificing accuracy. We unpack how shifting to polar coordinates avoids heavy normalization and how a single sign bit preserves data relationships, enabling faster semantic search and smarter AI tools on standard hardware.

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