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Cloudflare clef vs Tev1-4B-experimental

Cloudflare clef is more accurate on the Jev Decision Index, Cloudflare clef is better calibrated. Choose on whichever of accuracy, calibration and cost matters most for your decisions.

SpecCloudflare clefTev1-4B-experimental
ProviderCloudflareTogether
Decision Index score53.134.1
Calibration error (ECE)0.0400.104
Median latency (p50)102 ms36 ms
Cost per 1,000 decisions—$0.0084
Parameters28B5B
Open weightsYesYes
Question typesChoice (one of N options), Score (ordered rubric), Yes / noChoice (one of N options), Score (ordered rubric), Yes / no
MechanismDecoder LM with a decision readoutDecoder LM with a decision readout
Licenseapache-2.0—

FAQ

Is Cloudflare clef or Tev1-4B-experimental more accurate?

Cloudflare clef scores higher on the Jev Decision Index (53.1 vs 34.1).

Which is better calibrated, Cloudflare clef or Tev1-4B-experimental?

Cloudflare clef has the lower expected calibration error (0.040 vs 0.104), so its stated confidence is closer to how often it is right.

Is Cloudflare clef or Tev1-4B-experimental 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.