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What each one decides, how well calibrated it is, how fast it answers and what it costs to pull. Up to 4 at a time; the better value in each row is marked.
| Property | typesafe-ai/jev | jared-palmer/kev |
|---|---|---|
| Summary | The first System One model. Reads a state, answers typed Choice, Score and Noul questions in one call with calibrated probabilities, and generates no text. Closed weights, served by TypeSafe AI. | 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. |
| Decides | choice, score, noul, classify, route | choice, score, noul, classify, route |
| Architecture | jev | kev |
| Fine-tuned from | — | qwen/qwen3.5-4b-base |
| License | proprietary | apache-2.0 |
| Availability | Hosted API | Open weights |
| Hosted by | TypeSafe AI | — |
| Input price | $0.042/MTok | — |
| Decision accuracy | — | 83.8% |
| Calibration error | — | 0.042 |
| Valid action rate | — | — |
| Median latency | — | — |
| p95 latency | — | — |
| Evaluation suite | — | transfer-v4 (locked, out of domain) |
| Latest version | 1.13.0 | 2026.09 |
| Variants | — | — |
| Size of latest version | — | 152.2 MB |
| Files | 0 | 11 |
| Downloads | 0 | 0 |
| Stars | 0 | 0 |
| Tags | system-one, hosted, rlcd | system-one, qwen, lora, pointer-head, 4b |
| Updated | Sep 26, 2026 | Sep 26, 2026 |