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Avishek Biswas: bev-decider and Contrastive-LM: clm, compared on what they decide, where they run, what they cost and what their publishers report.
| Property | avishek-biswas/bev-decider | contrastive-lm/clm |
|---|---|---|
| Summary | A 0.4B decision model made from the first 20 layers of Qwen3-0.6B plus a small attention head that compares options. It answers choice, noul and score questions in one pass, and choice order cannot change its answer by construction. Non-commercial licence. | 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. |
| Decides | choice, score, noul | choice, score, noul, rank, classify, route |
| Architecture | bev-decider | clm |
| Fine-tuned from | qwen/qwen3-0.6b | qwen/qwen3-8b |
| License | cc-by-nc-4.0 | apache-2.0 |
| Availability | Open weights | Open weights |
| Hosted by | — | — |
| Input price | — | — |
| Decision accuracy | 74.7% | — |
| Calibration error | — | — |
| Valid action rate | — | — |
| Median latency | — | — |
| p95 latency | — | — |
| Evaluation suite | avbiswas/bev-decision test split (5,000 held-out questions over 2,617 states), the maker's own | — |
| Latest version | 2026.09 | 2026.09.25 |
| Variants | LICENSE-Qwen | LICENSE |
| Size of latest version | 940.1 MB | 72.1 MB |
| Files | 8 | 3 |
| Downloads | 0 | 12 |
| Stars | 0 | 0 |
| Tags | system-one, qwen, non-commercial, 478m | system-one, contrastive, qwen, ranking, 8b |
| 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.
bev-decider is from Avishek Biswas and clm from Contrastive-LM. Both have open weights you can download and run. Both answer choice, score and noul questions. Only clm answers rank, classify and route. bev-decider is the smaller model, at 478M parameters to 8.0B. bev-decider is licensed cc-by-nc-4.0; clm, apache-2.0.
Only bev-decider publishes an accuracy figure (74.7% on avbiswas/bev-decision test split (5,000 held-out questions over 2,617 states), the maker's own); clm does not, so there is no comparison to make without your own test.
bev-decider: Free (open weights). clm: Free (open weights). Open weights cost nothing per call beyond your own hardware.
Yes, both: systemone pull avishek-biswas/bev-decider and systemone pull contrastive-lm/clm download the weights.