# Aviv Dozorets: lev1

> A decision model by Aviv Dozorets on IFM's K2-Horizon-3.7B: a rank-32 LoRA, shipped merged and as an adapter, that answers choice and yes/no questions with a probability per option in one forward pass. Not calibrated: raw softmax. Not Interfaze's lev.

- Page: https://systemonemodels.ai/aviv-dozorets/lev1
- API: https://api.systemonemodels.ai/v1/models/aviv-dozorets/lev1
- Download: `pip install systemonemodels && systemone pull aviv-dozorets/lev1`

## Facts

| | |
|---|---|
| Maker | Aviv Dozorets (https://systemonemodels.ai/aviv-dozorets) |
| Decides | choice, noul |
| Architecture | lev1 |
| Base model | ifm/k2-horizon-3.7b |
| Parameters | 3.7B |
| Licence | apache-2.0 |
| Availability | Open weights |
| Released | 2026-10-04 |
| Latest version | 2026.09 |

## Reported evaluation

Suite: Decision Index 0.2.1 suite (third-party), the maker's own run. Numbers are the publisher's own.

- Median latency: 28.8 ms
- p95 latency: 170 ms

## Model card

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# Lev1-3.7B

A decision model by Aviv Dozorets on IFM's K2-Horizon-3.7B: a rank-32 LoRA, shipped merged and as an adapter, that answers choice and yes/no questions with a probability per option in one forward pass. Not calibrated: raw softmax. Not Interfaze's lev.

Uses custom modeling code copied from IFM, so it needs trust_remote_code. Not calibrated (raw softmax, no fitted temperature). English only; weakest on knowledge and arts. The maker's own run of the third-party Decision Index 0.2.1 gives 42.28 (Tools 68.8), not verified by the board. Unrelated to Interfaze's lev, listed as interfaze-ai/lev.

## What it decides

- **choice** — picks one option from a set
- **noul** — answers a yes/no question with one probability

## At a glance

| | |
|---|---|
| Parameters | 3.7B |
| Base model | `IFM/K2-Horizon-3.7B` |
| Maker | Aviv Dozorets |
| Released | 2026-10-04 |
| License | apache-2.0 |
| Reported latency | 28.8 ms p50 / 169.9 ms p95 per request on one RTX PRO 6000 Blackwell Server Edition |

## Get the weights

```bash
pip install systemonemodels
systemone pull aviv-dozorets/lev1
```

The files are served from the maker's Hugging Face repository, [`theaviv/Lev1-3.7B`](https://huggingface.co/theaviv/Lev1-3.7B), and verified against the checksums recorded here.

## Read more

- [Model card](https://huggingface.co/theaviv/Lev1-3.7B)
- [Training data](https://huggingface.co/datasets/theaviv/lev1-decisions)

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*This page was opened by System One for Aviv Dozorets, who can claim the organisation and take it over at any time.*

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