ECU credits and billing
ECU credits, consumption, and billing in Stratix Premium.
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ECU credits, consumption, and billing in Stratix Premium.
Available in Stratix Premium. This surface is part of the logged-in workspace at stratix.layerlens.ai. Stratix Public users can browse the catalog but cannot use this feature.
Stratix Premium bills compute-intensive operations against an ECU (Evaluation Compute Unit) balance. This page covers how it works, how to top up, and how to track consumption.
Model inference — token-based, by model
Judge runs — per-run, by judging model (judges are LLMs)
GEPA optimization — per-iteration
Trace evaluation runs — per-trace × per-judge
ECU does NOT bill:
Browsing the catalog (Public or Premium)
Saving spaces, creating scorers, configuring evaluations
Tokens consumed by your own provider key (BYOK custom models bill against your provider, not ECU)
In the header, click Buy Now or open Settings → Billing → Buy ECU.
Options:
Free starter pack — included with every Free account
One-time top-up — pay-as-you-go in fixed increments
Auto-top-up — automatic top-up when balance drops below a threshold
Volume / annual — Enterprise tier; talk to sales
Settings → Billing → Consumption shows:
Current balance
Daily / monthly consumption
Top consumers (by user, by model, by job type)
Forecast (when balance is expected to run out at current rate)
Before any compute-intensive operation, Stratix shows a worst-case ECU estimate. You approve before it runs. The actual consumption may be lower if a job short-circuits.
In-app and email notifications fire when balance drops below configurable thresholds. The default warns at 20% remaining and again at 5%.
New compute-intensive operations are blocked until you top up. Existing runs in progress complete. Catalog browsing, saving, and other no-ECU operations continue to work.
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