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JoshuaSP diffusiongemma (open-jev) vs Celeris-1 Decision

JoshuaSP diffusiongemma (open-jev) and Celeris-1 Decision have no measured difference in accuracy, calibration or cost in our data yet.

SpecJoshuaSP diffusiongemma (open-jev)Celeris-1 Decision
ProviderJoshuaSPCeleris
Decision Index score47.3—
Calibration error (ECE)0.215—
Median latency (p50)260 ms—
Cost per 1,000 decisions—$0.0080
Parameters26B—
Open weightsYesNo
Question typesChoice (one of N options), Score (ordered rubric), Yes / noChoice (one of N options), Score (ordered rubric), Yes / no
MechanismDiffusion LMDiffusion LM
License—proprietary

FAQ

Is JoshuaSP diffusiongemma (open-jev) or Celeris-1 Decision 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, JoshuaSP diffusiongemma (open-jev) or Celeris-1 Decision?

No calibration difference between JoshuaSP diffusiongemma (open-jev) and Celeris-1 Decision is recorded yet.

Is JoshuaSP diffusiongemma (open-jev) or Celeris-1 Decision 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.