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Qwen-Jeff B2 vs Cloudflare clef

Qwen-Jeff B2 and Cloudflare clef have no measured difference in accuracy, calibration or cost in our data yet.

SpecQwen-Jeff B2Cloudflare clef
ProviderdivergentlabsCloudflare
Decision Index score—53.1
Calibration error (ECE)—0.040
Median latency (p50)—102 ms
Cost per 1,000 decisions——
Parameters2B28B
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 Qwen-Jeff B2 or Cloudflare clef 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, Qwen-Jeff B2 or Cloudflare clef?

No calibration difference between Qwen-Jeff B2 and Cloudflare clef is recorded yet.

Is Qwen-Jeff B2 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.