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ultracompress


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Author: None
License: BUSL-1.1
Summary: Near-lossless 5-bit transformer compression (~1% perplexity vs the bf16 reference; lossy), with reproducible, cryptographically verifiable reconstruction — 22 PPL-verified architectures (17 dense + 4 MoE + 1 SSM) plus 1 ViT cosine-verified — across 4 architecture classes (0.6B–405B). Public CLI does pack structure + download-integrity checks; the codec is patent-pending and not distributed. BUSL-1.1 + Additional Use Grant.
Latest version: 0.6.27
Required dependencies: huggingface_hub
Optional dependencies: build | hypothesis | mypy | pre-commit | pytest | pytest-cov | ruff | twine

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