A/B Testing Token Usage (Annual) Calculator FAQ

It estimates annual AI requests, combined input and output token usage, an even-split token figure per variant, and estimated token cost for planned A/B tests.

It is useful for product, engineering, experimentation, and finance teams planning AI-powered tests where participant actions generate token-consuming requests.

It is a forecast based on your inputs. Actual usage should be measured from production logs and provider billing data.

Yes. The calculation uses the price you enter per million tokens, so the output follows the currency basis of that input.

They are the average monthly users or visitors who could reasonably be included in an individual test before the test traffic percentage is applied.

It applies separately to each individual test. For example, 20% allocation across four tests counts 20% of annual eligible traffic four times as separate exposures.

Participants per test is annualized. It uses monthly eligible visitors multiplied by 12 before applying the test allocation.

Potentially. The calculator estimates exposures rather than deduplicated people, especially when a user can appear in multiple separate tests.

Use a representative monthly average for a simple estimate, or calculate periods separately when seasonality is significant.

Enter the combined average input and output tokens for one AI request. Where possible, base it on logs from comparable workloads.

Include them in the average requests per participant or average tokens per request when they occur regularly enough to affect expected usage.

No. With unchanged total test traffic and request behavior, more variants split the same total usage across more groups. Usage increases only if the change also increases traffic, requests, or tokens.

It provides an even-split planning view by dividing total annual token usage by the total number of variants, including the control.

The calculator uses one average for all variants. Estimate variants separately if their models, prompts, outputs, or request rates differ materially.

The calculator divides total annual tokens by one million and multiplies by the entered price per one million tokens.

If pricing differs by token type, first derive a blended price that matches your expected input-output mix, or calculate each component separately outside this tool.

Not automatically. Enter a blended price that reflects the pricing treatment and charges relevant to your expected workload.

Actual costs can change because of traffic variation, prompt and output lengths, model routing, retries, caching, pricing changes, and implementation behavior.

Use observed eligible traffic, request logs, and token logs from comparable production flows. Revisit the estimate when test design or pricing changes.