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HEAD TO HEAD
Mapika: decider and akhilaaa3: jev-omni, compared on what they decide, where they run, what they cost and what their publishers report.
| Property | mapika/decider | akhilaaa3/jev-omni |
|---|---|---|
| Summary | The most-downloaded open System One reproduction. Merged Qwen3.5 fine-tunes, trained on about 95 public decision sets, then calibration-aware RL and a rank-64 LoRA, that softmax letter logits at an answer slot. | A multimodal decision classifier over text, image, audio and video on Gemma 4 12B, fine-tuned on 30,000 questions. Returns a probability per option and generates nothing. |
| Decides | choice, score, noul, classify, route | choice, noul, score, classify |
| Architecture | decider | jev-omni |
| Fine-tuned from | qwen/qwen3.5-2b-base | google/gemma-4-12b-it |
| License | apache-2.0 | apache-2.0 |
| Availability | Open weights | Open weights |
| Hosted by | — | — |
| Input price | — | — |
| Decision accuracy | 80.2% | 87.6% |
| Calibration error | 0.038 | 0.040 |
| Valid action rate | — | — |
| Median latency | 3.2 ms | 83 ms |
| p95 latency | — | — |
| Evaluation suite | Decider 67-task regression set | DecisionBench Medium (author's set) |
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.
decider is from Mapika and jev-omni from akhilaaa3. Both have open weights you can download and run. Both answer choice, score, noul and classify questions. Only decider answers route. decider is the smaller model, at 2.0B parameters to 12B.
They report on different suites — decider 80.2% on Decider 67-task regression set, jev-omni 87.6% on DecisionBench Medium (author's set) — so the numbers do not rank them. Test both on your own labelled examples.
decider: Free (open weights). jev-omni: Free (open weights). Open weights cost nothing per call beyond your own hardware.
By their publishers’ figures, decider answers in about 3.2 ms at the median and jev-omni in about 83 ms — measured on different hardware, so treat it as a rough guide.
Yes, both: systemone pull mapika/decider and systemone pull akhilaaa3/jev-omni download the weights.
| Latest version | 2026.09 | 2026.09 |
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| Variants | — | unified |
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| Size of latest version | 3.5 GB | 22.3 GB |
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| Files | 4 | 6 |
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| Downloads | 0 | 0 |
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| Stars | 0 | 0 |
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| Tags | system-one, qwen, rl, calibrated, 2b | system-one, multimodal, gemma, vision, audio, 12b |
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| Updated | Sep 26, 2026 | Sep 26, 2026 |
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