# TokenRhythm: neohorse-jev

> TokenRhythm's prefill-only decision model for agent workflows. Built on its NeoHorse-1-4B (a Qwen3.5-4B derivative), it predicts Choice, Noul and Score answers over application-defined options without generating text, with optional single-image input.

- Page: https://systemonemodels.tech/tokenrhythm/neohorse-jev
- API: https://api.systemonemodels.tech/v1/models/tokenrhythm/neohorse-jev
- Download: `pip install systemonemodels && systemone pull tokenrhythm/neohorse-jev`

## Facts

| | |
|---|---|
| Maker | TokenRhythm (https://systemonemodels.tech/tokenrhythm) |
| Decides | choice, score, noul, classify, route |
| Architecture | neohorse |
| Base model | tokenrhythm/neohorse-1-4b |
| Parameters | 4.0B |
| Licence | apache-2.0 |
| Availability | Open weights |
| Released | 2026-09-23 |
| Latest version | 2026.09 |

## Reported evaluation

Suite: JevBench public set (231 items), vLLM, maker's run. Numbers are the publisher's own.

- Decision accuracy: 75.3%

## Model card

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# NeoHorse-Jev-4B

TokenRhythm's prefill-only decision model for agent workflows. Built on its NeoHorse-1-4B (a Qwen3.5-4B derivative), it predicts Choice, Noul and Score answers over application-defined options without generating text, with optional single-image input.

Runs on vLLM, SGLang or a bundled Python, CLI and HTTP runtime (wheel included). TokenRhythm reports 75.3% per-example accuracy on JevBench's 231 public items, 81.9 on the Kev suites, 87.2% on a 282-item Nimble subset and a 77.70 equal-weight mean over six text suites, plus 60.7% on Image-NLI. The card says it has not published latency, memory or cost comparisons under a common protocol. A GGUF build and a ModelScope mirror exist. The third-party Decision Index 0.2.1 scores it 36.75.

## What it decides

- **choice** — picks one option from a set
- **score** — places the input on an ordered scale
- **noul** — answers a yes/no question with one calibrated probability
- **classify** — assigns a category from a fixed taxonomy
- **route** — sends the input to one of several destinations

## At a glance

| | |
|---|---|
| Parameters | 4B |
| Base model | `tokenrhythm/neohorse-1-4b` |
| Maker | TokenRhythm |
| Released | 2026-09-23 |
| License | apache-2.0 |
| Reported accuracy | 75.3% |

## Get the weights

```bash
pip install systemonemodels
systemone pull tokenrhythm/neohorse-jev
```

The files are served from the maker's Hugging Face repository, [`TokenRhythm/NeoHorse-Jev-4B`](https://huggingface.co/TokenRhythm/NeoHorse-Jev-4B), and verified against the checksums recorded here.

## Read more

- [Model card](https://huggingface.co/TokenRhythm/NeoHorse-Jev-4B)
- [Code](https://github.com/TokenRhythm/NeoHorse)
- [GGUF build](https://huggingface.co/TokenRhythm/NeoHorse-Jev-4B-GGUF)
- [NeoHorse technical report](https://arxiv.org/abs/2609.08183)

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