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HEAD TO HEAD
Jared Palmer: kev and TokenRhythm: neohorse-jev, compared on what they decide, where they run, what they cost and what their publishers report.
| Property | jared-palmer/kev | tokenrhythm/neohorse-jev |
|---|---|---|
| Summary | An open family of System One models. A LoRA adapter plus a pointer head on a frozen Qwen base returns a distribution per typed question in one forward pass, serves TypeSafe's /v1/systemone contract, and ships a fitted temperature with every checkpoint. | 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. |
| Decides | choice, score, noul, classify, route | choice, score, noul, classify, route |
| Architecture | kev | neohorse |
| Fine-tuned from | qwen/qwen3.5-4b-base | tokenrhythm/neohorse-1-4b |
| License | apache-2.0 | apache-2.0 |
| Availability | Open weights | Open weights |
| Hosted by | — | — |
| Input price | — | — |
| Decision accuracy | 83.8% | 75.3% |
| Calibration error | 0.042 | — |
| Valid action rate | — | — |
| Median latency | — | — |
| p95 latency | — | — |
Figures are from each model’s manifest; accuracy and latency are what the publishers report, on their own suites and hardware. Add a third model.
kev is from Jared Palmer and neohorse-jev from TokenRhythm. Both have open weights you can download and run. Both answer choice, score, noul, classify and route questions.
They report on different suites — kev 83.8% on transfer-v4 (locked, out of domain), neohorse-jev 75.3% on JevBench public set (231 items), vLLM, maker's run — so the numbers do not rank them. Test both on your own labelled examples.
kev: Free (open weights). neohorse-jev: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Yes, both: systemone pull jared-palmer/kev and systemone pull tokenrhythm/neohorse-jev download the weights.
| Evaluation suite | transfer-v4 (locked, out of domain) | JevBench public set (231 items), vLLM, maker's run |
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| Latest version | 2026.09 | 2026.09 |
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| Variants | — | SHA256SUMS, assets, backbone, dist, package, tokenizer, vision |
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| Size of latest version | 152.2 MB | 8.5 GB |
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| Files | 11 | 38 |
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| Downloads | 1 | 0 |
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| Stars | 0 | 0 |
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| Tags | system-one, qwen, lora, pointer-head, 4b | system-one, qwen, multimodal, vllm, sglang, 4b |
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| Updated | Sep 30, 2026 | Sep 30, 2026 |
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