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Cloudflare clef vs tacet-sonata

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

SpecCloudflare cleftacet-sonata
ProviderCloudflarecodepawl
Decision Index score53.1—
Calibration error (ECE)0.040—
Median latency (p50)102 ms—
Cost per 1,000 decisions——
Parameters28B144M
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 readoutEncoder classifier
Licenseapache-2.0apache-2.0

FAQ

Is Cloudflare clef or tacet-sonata 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, Cloudflare clef or tacet-sonata?

No calibration difference between Cloudflare clef and tacet-sonata is recorded yet.

Is Cloudflare clef or tacet-sonata 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.