Measure Cost per Successful Workflow

A practical approach

Step 1

Define a successful outcome and the unit you want to measure, such as a reviewed document or completed onboarding task.

Step 2

Collect usage for all stages and record retry and failure rates. Separate shared fixed costs from costs that grow with each workflow.

Step 3

Compare alternatives on quality and completion cost together. Set budgets and alerts around meaningful usage boundaries.

Worked example

Two summarization approaches have different per-call costs. The cheaper one requires frequent repair and manual correction. A fair comparison includes those extra calls and reviewer time instead of comparing only the first response.

A mistake to avoid

Optimizing averages can hide a small group of extremely expensive tasks. Inspect the distribution and the reasons for outliers before applying a global restriction.

Try it yourself

Take a sample of twenty completed and failed workflows. Calculate total attributable usage divided by successful outcomes, then identify the largest avoidable source of repeat work.

Your implementation checklist

• Success is defined before cost comparison.
• Retries and failures are included.
• Estimates are separated from actual billing.
• Outliers are reviewed alongside averages.