How Token and LLM API Cost Worksheets Work
Your rates, your volumes, transparent totals
Free Calculator Hub Editorial Team
6 min read

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.
One workload
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.
Recurring API budget
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.
Build a monthly LLM budget
Project requests, average tokens, rates, and fixed fees:
LLM API Cost Calculator