A/B Testing Token Usage (Annual) Calculator
Estimate annual AI token consumption and token costs for A/B tests using traffic, test allocation, requests, variants, and token usage per request.
Overview
Use this annual A/B testing token usage calculator to estimate how many AI tokens your experiment programme may consume. Enter your eligible monthly traffic, the share allocated to each test, number of tests, requests per participant, average tokens per request, and token price.
How it works
The calculator annualizes eligible monthly traffic, applies the traffic allocation for one test, and multiplies this by the number of planned tests. It then multiplies participant exposures by AI requests per participant and average tokens per request. Estimated cost equals total tokens divided by one million, multiplied by the price you enter. Variant count is used only to show an even-split average per variant; adding variants does not increase total traffic unless you also increase the test allocation or request rate.
How to use this calculator
- 1Enter the average monthly traffic that could participate in a test.
- 2Set the percentage of traffic allocated to each individual test.
- 3Add the number of AI-powered A/B tests you expect to run each year.
- 4Enter the number of variants and average AI requests per participant.
- 5Add the combined input and output tokens per request and your price per million tokens.
- 6Review the estimated annual tokens, requests, and cost.
Example Calculation
Monthly eligible visitors
100000
Traffic allocated to each test
20%
A/B tests per year
4
Variants per test
2
AI requests per participant
3
Average tokens per request
1500
Price per 1 million tokens
$5
Annual token usage
4,320,000,000 tokens
With 100,000 eligible monthly visitors, 20% test allocation, four tests, three requests per participant, and 1,500 tokens per request, the estimate is 4.32 billion tokens per year and an annual token cost of about 21,600 in the selected currency.
Frequently asked questions
What counts as token usage in an A/B test?
Token usage is the total input and output tokens consumed by AI requests made by participants in every planned test variant.
Do more A/B test variants increase total token usage?
Not by themselves. If the same total test traffic is divided across more variants, total requests and tokens stay similar, while tokens per variant fall. Usage rises if more traffic or more requests are added.
Why does the calculator multiply by the number of tests per year?
Each separate test can generate its own AI requests. The calculator treats each planned test as an additional set of participant exposures.
Should input and output tokens both be included?
Yes. Enter the combined average input and output tokens per request for a more complete usage estimate.
How can I make the estimate more accurate?
Use analytics for actual eligible traffic and request frequency, then use observed token logs for average input and output token counts. Include retries and fallback calls if they occur regularly.
Does this include cached-token discounts or provider fees?
No. Enter a blended price per million tokens that reflects the pricing, caching treatment, and fees relevant to your expected usage.
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Assumptions and warnings
Assumptions
- Monthly eligible traffic is consistent throughout the year.
- The entered traffic allocation applies separately to each A/B test.
- Traffic is split evenly across the variants in each test.
- Average tokens per request include both input and output tokens.
- The token price entered is a blended estimate and remains unchanged over the year.
Warnings
- This calculator provides a planning estimate only; actual token usage and pricing can vary by model, prompt length, output length, retries, caching, and provider fees.
- Use current provider pricing and measured production usage when setting a final budget.