Cloudflare clef-flash vs Kev 27B
Kev 27B is more accurate on the Jev Decision Index, Kev 27B is better calibrated. Choose on whichever of accuracy, calibration and cost matters most for your decisions.
| Spec | Cloudflare clef-flash | Kev 27B |
|---|---|---|
| Provider | Cloudflare | Jared Palmer |
| Decision Index score | 47.6 | 58.8 |
| Calibration error (ECE) | 0.025 | 0.022 |
| Median latency (p50) | 53 ms | 135 ms |
| Cost per 1,000 decisions | — | — |
| Parameters | 10B | 28B |
| Open weights | Yes | Yes |
| Question types | Choice (one of N options), Score (ordered rubric), Yes / no | Choice (one of N options), Score (ordered rubric), Yes / no |
| Mechanism | Decoder LM with a decision readout | Decoder LM with a decision readout |
| License | apache-2.0 | apache-2.0 |
FAQ
Is Cloudflare clef-flash or Kev 27B more accurate?
Kev 27B scores higher on the Jev Decision Index (58.8 vs 47.6).
Which is better calibrated, Cloudflare clef-flash or Kev 27B?
Kev 27B has the lower expected calibration error (0.022 vs 0.025), so its stated confidence is closer to how often it is right.
Is Cloudflare clef-flash or Kev 27B cheaper per 1,000 decisions?
A hosted price is not recorded for both models; open-weight models cost the compute you run them on.
Cost per 1,000 decisions assumes 200 input tokens per decision. Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.