title: README
emoji: 🧊
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colorTo: blue
sdk: static
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Sipsa Labs
Sipsa Labs builds SIP, the operating system for the physical world.
UltraCompress is retired. Its public materials preserve historical research; new API access and paid pilots are no longer offered.
The research results below are historical and apply to their recorded versions and evaluation conditions.
Historical UltraCompress research
Historical research tiers:
- A genuinely lossless archival tier — reconstructs the original weights bit-for-bit (~1.3–1.6× smaller) for exact storage and hand-off.
- A near-lossless 5-bit tier — ~1% perplexity vs bf16 (lossy), ~3× smaller, for running frontier-scale models on small GPUs.
23 architectures verified: 22 PPL-verified end-to-end (21 transformer — 17 dense + 4 MoE — plus 1 SSM with a comparator-note caveat) and 1 Vision Transformer cosine-verified (DINOv2-Large). Dense + MoE + SSM + ViT, 0.6B to 405B. The public v0.6.27 CLI checks basic pack structure and computes SHA-256 fingerprints unless hashing is skipped. It does not reconstruct weights, reproduce the evaluations below, or automatically compare its fingerprint with a trusted reference.
Verified 5-bit PPL ratios (sample)
(perplexity ratio = compressed PPL / bf16 baseline PPL; FineWeb-edu held-out tail; seq_len = 1024; n = 30–50; seed = 42)
| Model | Params | Type | PPL ratio | Notes |
|---|---|---|---|---|
| Mixtral-8x7B | 47B | MoE | 1.00368× | tightest MoE result |
| Qwen3-1.7B-Base | 1.7B | dense | 1.00401× | small-decoder record |
| Qwen3-14B | 14B | dense | 1.00403× | 14B-class record |
| Yi-1.5-9B | 8.8B | dense | 1.00414× | >8B record |
| Qwen3-8B | 8B | dense | 1.00440× | 8B-class record |
| Mistral-7B-v0.3 | 7B | dense | 1.00548× | strong dense 7B-class result |
| Phi-3-mini-4k | 3.8B | dense | 1.00262× | tightest dense ratio (seq_len=128 caveat) |
| Hermes-3-Llama-3.1-405B | 405B | dense | 1.0066× | 405B-class near-lossless on a single 32 GB GPU (streamed from disk) |
| Mamba-2.8B | 2.8B | SSM | 1.0059× | state-space model — SSM-compatible comparator (the canonical transformer pipeline is architecture-incompatible with SSMs) |
| Llama-3.1-8B | 8B | dense | 1.0125× | honest worst case (pipeline-specific floor, not architectural) |
Full matrix at github.com/sipsalabs/ultracompress.
Inspect a historical pack
pip install ultracompress
hf download SipsaLabs/qwen3-1.7b-base-uc-v3-bpw5 --local-dir ./pack
uc verify ./pack
Expected result category: basic pack-structure checks and a computed fingerprint, not a reconstruction proof or an automatic comparison with a trusted reference.
Without an API key, uc try prints a recorded reference response, not a live inference result.
Historical API and services
New API access and paid pilots are no longer offered. The public repository and model cards preserve historical materials.
License + IP
- PyPI v0.6+ under BUSL-1.1 with an Additional Use Grant: free for sub-$1M-ARR companies, research, and individuals. Auto-converts to Apache 2.0 four years after each release.
- v0.5.x stays Apache-2.0 on the
legacy/0.5.xbranch. - Codec internals are patent-protected (continuations pending).
Contact
- Project inquiries → founder@sipsalabs.com
- Patents / licensing → legal@sipsalabs.com
- Press / media → press@sipsalabs.com
- Security disclosure → security@sipsalabs.com
- General → hello@sipsalabs.com