Kev 4B r10 vs Cloudflare clef
Cloudflare clef is more accurate on the Jev Decision Index, Kev 4B r10 is better calibrated. Choose on whichever of accuracy, calibration and cost matters most for your decisions.
| Spec | Kev 4B r10 | Cloudflare clef |
|---|---|---|
| Provider | Jared Palmer | Cloudflare |
| Decision Index score | 39.5 | 53.1 |
| Calibration error (ECE) | 0.032 | 0.040 |
| Median latency (p50) | 59 ms | 102 ms |
| Cost per 1,000 decisions | $0.0084 | — |
| Parameters | 5B | 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 Kev 4B r10 or Cloudflare clef more accurate?
Cloudflare clef scores higher on the Jev Decision Index (53.1 vs 39.5).
Which is better calibrated, Kev 4B r10 or Cloudflare clef?
Kev 4B r10 has the lower expected calibration error (0.032 vs 0.040), so its stated confidence is closer to how often it is right.
Is Kev 4B r10 or Cloudflare clef 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.