Account, plans and billing
One Thundera account; plans and invoices live at auth.thundera.eu.
Account details, organisation membership and billing are managed centrally:
Plans
Plans for the ai product are read from the central catalogue (GET https://auth.thundera.eu/api/v1/auth/billing/plans?app=ai); the pricing section and GET /api/plans show exactly that.
Monthly AI allowance
Each plan carries limits.ai_monthly_usd, your personal monthly spend on platform-funded models. It is read from GET /api/v1/auth/billing/effective-plan/ai and sent to the gateway with every request. When it is exceeded the workspace shows "Your monthly AI allowance is used up" and nothing more is sent to the model until the month rolls over or you upgrade.