| Budget baseline | Approved pilot budget, timeframe, currency, expected usage envelope and excluded costs. | Finance owner | The baseline is dated, approved and mapped to the current pilot scope. | No approved baseline, mixed currencies or hidden platform/support costs. |
| Actual spend source | Billing exports, AI-provider usage, GPU/runtime reports, cloud-service cost views and manual support estimates. | FinOps/data owner | Provider totals reconcile and source files are versioned. | Unreconciled usage, missing provider, screenshot-only totals or unowned spreadsheet. |
| Variance driver | Prompt volume, retrieval calls, context size, model tier, batch jobs, GPU utilization, storage, integration retries or human support load. | Engineering/product owner | The top drivers are ranked and technically explainable. | Spend is rising but nobody can name the driver or owner. |
| Scale-cost scenario | Low/base/high estimate for production users, transactions, model mix, latency target, regions and support model. | Product and finance owners | Scenario assumptions are explicit and tied to observed pilot data. | Production forecast copied from a vendor calculator with no pilot evidence. |
| Control decision | Cap, optimize, pause, rollback, require approval, downgrade model, batch workload, redesign workflow or continue under watch. | Accountable executive | Decision has owner, deadline, cap and review date. | Production scale approved while variance remains unexplained. |
| Adviser questions | Procurement, finance, legal, security, privacy, data residency or contract questions that affect spend commitment. | Commercial owner | Questions are answered or explicitly parked before commitment. | New contract, reserved capacity or customer pricing claim without reviewer sign-off. |