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Yuichi Tateno (hotchpotch): bekko-system-one and DecisionTune: decisiontune, compared on what they decide, where they run, what they cost and what their publishers report.
| Property | hotchpotch/bekko-system-one | decision-tune/decisiontune |
|---|---|---|
| Summary | Ultra-small English encoders (17M, 68M and 395M) fine-tuned from Ettin rerankers. Each answers choice, noul and score questions with a probability per candidate and no generated text. Experimental v0 by one developer; the weights have no licence assigned yet. | DecisionTune's 395M decision model: ModernBERT-large fine-tuned with a 4 KB scoring head that scores a marker per option, answering a choice or yes/no question in one encoder pass with a probability for every option. Runs locally on CPU or GPU via PyTorch, MLX or ONNX. |
| Decides | choice, noul, score | choice, noul, route, classify |
| Architecture | bekko | decisiontune |
| Fine-tuned from | cross-encoder/ettin-reranker-400m-v1 | answerdotai/modernbert-large |
| License | Unassigned: the weights licence is not finalised (treated as non-commercial); training code MIT | apache-2.0 |
| Availability | Open weights | Open weights |
| Hosted by | — | — |
| Input price | — | — |
| Decision accuracy | — | — |
| Calibration error | — | — |
| Valid action rate | — | — |
| Median latency | 5 ms | — |
| p95 latency | 5.4 ms | — |
| Evaluation suite | The maker's short-input speed probe (4-option Choice, RTX 5090, 1 Oct 2026) | — |
| Latest version | 2026.09 | 1.0.0 |
| Variants | 0_BekkoInference | onnx |
| Size of latest version | 1.5 GB | 2.9 GB |
| Files | 9 | 8 |
| Downloads | 0 | 0 |
| Stars | 0 | 0 |
| Tags | system-one, encoder, ettin, onnx, browser, small, 395m | system-one, encoder, modernbert, mlx, onnx, mcp, 395m |
| Updated | Oct 7, 2026 | Oct 7, 2026 |
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.
bekko-system-one is from Yuichi Tateno (hotchpotch) and decisiontune from DecisionTune. Both have open weights you can download and run. Both answer choice and noul questions. Only bekko-system-one answers score. Only decisiontune answers route and classify. bekko-system-one is licensed other; decisiontune, apache-2.0.
Neither publishes an accuracy figure. Test both on your own labelled examples.
bekko-system-one: Free (open weights). decisiontune: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Yes, both: systemone pull hotchpotch/bekko-system-one and systemone pull decision-tune/decisiontune download the weights.