UltraCompress – first mathematically lossless 5-bit LLM compression

What it does

Verified AI infrastructure for regulated deployment. UltraCompress (our wedge): near-lossless 5-bit compression with SHA-256-reproducible reconstruction - prove the model in production is the one you validated. 23 architectures (0.6B-405B), Hermes-3-405B @ 1.0066x. OpenAI-compatible API. pip install ultracompress - sipsalabs/ultracompress

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