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OpenJEV vs Cloudflare clef-flash

OpenJEV and Cloudflare clef-flash have no measured difference in accuracy, calibration or cost in our data yet.

SpecOpenJEVCloudflare clef-flash
Provideropen-jevCloudflare
Decision Index score—47.6
Calibration error (ECE)—0.025
Median latency (p50)—53 ms
Cost per 1,000 decisions——
Parameters500M10B
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 2.0apache-2.0

FAQ

Is OpenJEV or Cloudflare clef-flash more accurate?

At least one of the two has no Jev Decision Index score yet, so their accuracy cannot be compared here.

Which is better calibrated, OpenJEV or Cloudflare clef-flash?

No calibration difference between OpenJEV and Cloudflare clef-flash is recorded yet.

Is OpenJEV or Cloudflare clef-flash 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.