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spark-s1-4b-v6 vs Cloudflare clef

spark-s1-4b-v6 and Cloudflare clef have no measured difference in accuracy, calibration or cost in our data yet.

Specspark-s1-4b-v6Cloudflare clef
Providerabhishek085Cloudflare
Decision Index score—53.1
Calibration error (ECE)—0.040
Median latency (p50)—102 ms
Cost per 1,000 decisions——
Parameters4B28B
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 spark-s1-4b-v6 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, spark-s1-4b-v6 or Cloudflare clef?

No calibration difference between spark-s1-4b-v6 and Cloudflare clef is recorded yet.

Is spark-s1-4b-v6 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.