Usage is metered per sandbox and priced at your plan’s rates. During the preview no payment method is needed and nothing is charged; invoices are drafts.

Where to see it

API keys need the scope: the Read only preset has usage:read, Full access has both. Keys created before these scopes existed do not have them.
usage.sh
usage_api.py

What counts

Killing a sandbox stops all four. Pausing stops the first two. Usage is rated hourly; until then the totals show it as pendingUsd, estimated at the same rates.

Coming soon

Card payments and issued invoices, and spend caps you set yourself. For per-sandbox metrics in your own monitoring, see OpenTelemetry export.