How Token and LLM API Cost Worksheets Work

AI cost worksheets exist to make metered billing inspectable. They multiply the token counts and rates you provide; they do not fetch live list prices or promise a vendor invoice.

For a single prompt/completion pair, cost is input tokens × input rate plus output tokens × output rate. Keeping rates separate mirrors how most providers bill.

Scale average tokens by monthly requests, then add fixed costs. Use the same rate card you pasted into the one-shot tool so the two pages stay consistent.