ECU credits — concept
ECU credits — how compute consumption is metered and billed in Stratix Premium.
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ECU credits — how compute consumption is metered and billed in Stratix Premium.
ECU stands for Evaluation Compute Unit. It's the unit Stratix uses to meter compute-intensive operations. Premium tier is pay-as-you-go on ECU; Free tier ships with a starter balance.
Model inference during evaluations — prorated by token, by model
Judge runs — judges are LLMs; they consume ECU per-call
GEPA optimization — per-iteration
Trace evaluation runs — trace × judge calls
Browsing the catalog (Public or Premium)
Configuring evaluations, spaces, judges, scorers
Saving and sharing
API key generation
Tokens consumed by your own provider key (BYOK custom models bill against your provider, not ECU)
A unit-based model lets Stratix offer:
Pay-as-you-go without complicated multi-provider billing
Cost previews before runs (token estimates × per-model ECU rates)
Per-team and per-project consumption tracking
Before any compute-intensive job, Stratix shows worst-case ECU consumption. You approve before it runs. Real consumption may be lower if a job short-circuits.
Public model evaluations bill against ECU (the platform pays the provider)
BYOK custom model evaluations bill against your provider (the model tokens) but ECU is still consumed for the platform engine work
Enterprise contracts include negotiated volume ECU pricing. Talk to sales when monthly consumption justifies it.
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