Methodology page draft
How the estimate works
The core calculator uses a simple token-cost model:
((requests × input_tokens × input_price) + (requests × output_tokens × output_price)) / 1,000,000 × buffer
Why we use a simple model first
This site is meant for early planning. A simple, inspectable model is often more useful than a fake-precise dashboard that hides assumptions.
What this model includes
- request volume
- average input size
- average output size
- editable token pricing
- optional retry or safety buffer
What this model does not fully include
- prompt caching differences
- retrieval or embedding costs
- tool execution costs
- image, audio, or video generation charges
- moderation and evaluation traffic
- pricing tiers, credits, or enterprise discounts
Best practice
Use this estimate as a starting point, then adjust based on logs, pilot traffic, and provider billing details.
Recommended trust module
Add a "How we estimate" box beside results with links to Sources and Disclaimer.
Calculator Lab formulas are simple, visible, and editable. Use them as estimates, not guarantees.