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Nace.AI: Drex Max vs SPX-CD-Pro

Nace.AI: Drex Max and SPX-CD-Pro have no measured difference in accuracy, calibration or cost in our data yet.

SpecNace.AI: Drex MaxSPX-CD-Pro
ProviderNace.AISurdAI
Decision Index score——
Calibration error (ECE)——
Median latency (p50)——
Cost per 1,000 decisions$0.012—
Parameters——
Open weights—Yes
Question types—Choice (one of N options), Score (ordered rubric), Yes / no
Mechanism—Decoder LM with a decision readout
License—apache-2.0

FAQ

Is Nace.AI: Drex Max or SPX-CD-Pro 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, Nace.AI: Drex Max or SPX-CD-Pro?

No calibration difference between Nace.AI: Drex Max and SPX-CD-Pro is recorded yet.

Is Nace.AI: Drex Max or SPX-CD-Pro 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.