---
license: other
license_name: busl-1.1
license_link: https://github.com/sipsalabs/ultracompress/blob/main/LICENSE
tags:
- ultracompress
base_model: Qwen/Qwen3-1.7B
---

# qwen3-1.7b-uc-v3-bpw3

3-bit compression (lossy; larger perplexity drift than the 5-bit line — see verified ratio below) of `Qwen/Qwen3-1.7B` — produced by Sipsa Labs (UltraCompress).

- Reproducible, cryptographically verifiable reconstruction: a deterministic decode to the SHA-256-pinned validated artifact (not bit-identical to the original bf16 model).
- Independently perplexity-verified end-to-end.
- License: BUSL-1.1 + Additional Use Grant.

```
pip install ultracompress
```

Documentation & verification: https://sipsalabs.com · https://github.com/sipsalabs/ultracompress

Patents pending.