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Contrastive-LM: clm and Telnyx: decision-flash, compared on what they decide, where they run, what they cost and what their publishers report.
| Property | contrastive-lm/clm | telnyx/decision-flash |
|---|---|---|
| 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. | Telnyx's hosted decision models, in beta on Telnyx Inference. One request carries shared state and up to 64 typed questions (choice, yes/no noul, ordered score) and returns a probability per option, with no generated text, on a TypeSafe-compatible /v1/systemone route. |
| Decides | choice, score, noul, rank, classify, route | choice, score, noul, classify, route |
| Architecture | clm | telnyx-decision |
| Fine-tuned from | qwen/qwen3-8b | — |
| License | apache-2.0 | proprietary |
| Availability | Open weights | Hosted API |
| Hosted by | — | Telnyx |
| Input price | — | $0.035/MTok |
| Decision accuracy | — | — |
| Calibration error | — | — |
| Valid action rate | — | — |
| Median latency | — | — |
| p95 latency | — | — |
| Evaluation suite | — | — |
| Latest version | 2026.09.25 | 2026.09 |
| Variants | LICENSE | — |
| Size of latest version | 72.1 MB | — |
| Files | 3 | 0 |
| Downloads | 12 | 0 |
| Stars | 0 | 0 |
| Tags | system-one, contrastive, qwen, ranking, 8b | system-one, hosted, typesafe-compatible, voice-agents |
| 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.
clm is from Contrastive-LM and decision-flash from Telnyx. clm has open weights you can download and run; decision-flash is only available as a hosted API. Both answer choice, score, noul, classify and route questions. Only clm answers rank. clm is licensed apache-2.0; decision-flash, proprietary.
Neither publishes an accuracy figure. Test both on your own labelled examples.
clm: Free (open weights). decision-flash: $0.035 / $0 per 1M. Open weights cost nothing per call beyond your own hardware.
clm yes — systemone pull contrastive-lm/clm downloads its weights. The other is only served as a hosted API.