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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 | contrastive-lm/clm | pngwn/system-one-qwen3-5-4b-scorer |
|---|---|---|
| Summary | Contrastive Language Models score a state against a set of candidate actions with a contrastive objective. Two projection heads on frozen Qwen3-8B embeddings, trained with InfoNCE; clm-serve maps Choice, Score and Noul onto candidate ranking. | One of the earliest Jev-shaped scorers. A sequence-classification head on Qwen3.5-4B-Base scores each (state, question, option) triple and softmaxes per question. Non-commercial licence. |
| Decides | choice, score, noul, rank, classify, route | choice, score, noul, classify |
| Architecture | clm | scorer |
| Fine-tuned from | qwen/qwen3-8b | qwen/qwen3.5-4b-base |
| License | apache-2.0 | cc-by-nc-4.0 |
| Availability | Open weights | Open weights |
| Hosted by | — | — |
| Input price | — | — |
| Decision accuracy | — | 70.7% |
| Calibration error | — | 0.044 |
| Valid action rate | — | — |
| Median latency | — | 112 ms |
| p95 latency | — | — |
| Evaluation suite | — | author-reported |
| Latest version | 2026.09.25 | 2026.09 |
| Variants | LICENSE | — |
| Size of latest version | 72.1 MB | 135.4 MB |
| Files | 3 | 2 |
| Downloads | 0 | 0 |
| Stars | 0 | 0 |
| Tags | system-one, contrastive, qwen, ranking, 8b | system-one, qwen, lora, non-commercial, 4b |
| Updated | Sep 26, 2026 | Sep 26, 2026 |