A/B Testing Token Usage (Monthly) Calculator Examples
Worked monthly A/B testing token and API cost examples for low-volume, high-context, and multi-variant experiment scenarios.
These worked examples show how participant volume, request frequency, prompt context, response length, and token prices can change an A/B testing workload estimate. All amounts are illustrative and use the stated prices only.
Small pilot with a concise prompt
A product team tests two onboarding message variants with 2,000 monthly participants.
Input Summary
Participants
2,000
Requests per participant
1
Input tokens per request
500 tokens
Output tokens per request
200 tokens
Input and output prices
$2.00 and $10.00 per million
Calculation Breakdown
- 1Requests2,000 × 12,000 requests
- 2Input usage2,000 × 5001,000,000 tokens
- 3Output usage2,000 × 200400,000 tokens
- 4Cost1 × $2.00 + 0.4 × $10.00$6.00
Result Summary
Cost
$6.00
A/B Testing Token Usage (Monthly) Calculator
Estimated monthly usage is 1,400,000 tokens, with a token-based cost of $6.00.
High-context support experiment
A support team expects 8,000 participants to make four requests each.
Input Summary
Participants
8,000
Requests per participant
4
Input tokens per request
2,500 tokens
Output tokens per request
600 tokens
Input and output prices
$3.00 and $15.00 per million
Calculation Breakdown
- 1Requests8,000 × 432,000 requests
- 2Input usage32,000 × 2,50080,000,000 tokens
- 3Output usage32,000 × 60019,200,000 tokens
- 4Cost80 × $3.00 + 19.2 × $15.00$528.00
Result Summary
Cost
$528.00
A/B Testing Token Usage (Monthly) Calculator
Estimated monthly usage is 99,200,000 tokens and estimated token API cost is $528.00.
Three-variant content experiment
A growth team tests three AI-generated content experiences for 30,000 monthly participants.
Input Summary
Participants
30,000
Requests per participant
2
Variants
3
Input tokens per request
700 tokens
Output tokens per request
900 tokens
Input and output prices
$4.00 and $12.00 per million
Calculation Breakdown
- 1Requests30,000 × 260,000 requests
- 2Total tokens60,000 × (700 + 900)96,000,000 tokens
- 3Cost42 × $4.00 + 54 × $12.00$816.00
- 4Average per variant96,000,000 ÷ 332,000,000 tokens
Result Summary
Total tokens
96,000,000 tokens
A/B Testing Token Usage (Monthly) Calculator
Estimated monthly usage is 96,000,000 tokens, or 32,000,000 per variant under an even split, at an estimated cost of $816.00.
How to Read Your Results
Monthly total tokens combine all prompt-side and generated tokens for the forecast period.
Input and output token totals should be reviewed separately because their prices and drivers can differ.
Average tokens per variant is an even-split benchmark, not a measurement of actual traffic allocation.
Estimated API cost covers only the input and output prices entered in the calculator.
Use observed production or pilot token averages to replace assumptions as test data becomes available.
Assumptions & Important Notes
- Every participant makes the stated average number of requests.
- The listed per-request token figures represent the full request and response, not only visible user text.
- The price examples are illustrative inputs and are not provider price quotes.
- The per-variant result assumes balanced allocation.
Related Examples
Frequently Asked Questions
What is a good first example to use for an A/B test token estimate?
Start with expected participants, observed requests per participant, and token averages from a representative staging run or existing workload.
Should I estimate token use for each variant separately?
Use separate estimates when variants have materially different prompts, contexts, models, or response lengths. An even split is only a shortcut when usage is similar.
How can I model a test with unequal traffic allocation?
Calculate requests and token use for each variant using its expected participant share, then add the variant totals.
Why does a high-context example have high input usage?
Long system prompts, conversation history, and retrieved documents are sent with each request and can add many input tokens.
Are these examples a budget guarantee?
No. They are estimates based on stated assumptions and token prices. Actual billed use can differ.
Ready to calculate your own result?
Use the live calculator with your own inputs, timing, and preferences.