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HEAD TO HEAD
Alibi Serikbay: jevk5 and Interfaze AI: lev, compared on what they decide, where they run, what they cost and what their publishers report.
| Property | alibi-serikbay/jevk5 | interfaze-ai/lev |
|---|---|---|
| Summary | Qwen3.5-4B with a merged rank-16 LoRA distilled from 17,408 teacher questions and 30,000 public training rows, read out as a temperature-scaled softmax over answer-letter logits. Also in 9B, 2B and GGUF. | An open System One model from Interfaze AI. A rank-32 LoRA on Qwen3.5-4B reads yes/no, choice and score answers from the logits of one forward pass, returns calibrated probabilities and serves the /v1/systemone API. |
| Decides | choice, score, noul, classify, route | choice, score, noul, classify, route |
| Architecture | jevk5 | lev |
| Fine-tuned from | qwen/qwen3.5-4b | qwen/qwen3.5-4b |
| License | apache-2.0 | apache-2.0 |
| Availability | Open weights | Open weights |
| Hosted by | — | — |
| Input price | — | — |
| Decision accuracy | 78.4% | 68.9% |
| Calibration error | 0.035 | 0.115 |
| Valid action rate | — | — |
| Median latency | 13.2 ms | 69 ms |
| p95 latency | — | — |
| Evaluation suite | JevBench public hard tier | S1Bench (13 public subsets, macro) |
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.
jevk5 is from Alibi Serikbay and lev from Interfaze AI. Both have open weights you can download and run. Both answer choice, score, noul, classify and route questions.
They report on different suites — jevk5 78.4% on JevBench public hard tier, lev 68.9% on S1Bench (13 public subsets, macro) — so the numbers do not rank them. Test both on your own labelled examples.
jevk5: Free (open weights). lev: Free (open weights). Open weights cost nothing per call beyond your own hardware.
By their publishers’ figures, jevk5 answers in about 13.2 ms at the median and lev in about 69 ms — measured on different hardware, so treat it as a rough guide.
Yes, both: systemone pull alibi-serikbay/jevk5 and systemone pull interfaze-ai/lev download the weights.
| Latest version | 0.3.0 | 2026.09 |
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| Variants | SHA256SUMS | — |
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| Size of latest version | 7.9 GB | 195.1 MB |
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| Files | 8 | 8 |
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| Downloads | 0 | 0 |
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| Stars | 0 | 0 |
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| Tags | system-one, qwen, lora, distilled, 4b | system-one, qwen, lora, calibrated, 4b |
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| Updated | Sep 27, 2026 | Sep 27, 2026 |
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