Calculator
AI Monthly Usage Calculator
Project monthly AI token spend from daily usage, average prompt size, and response size.
Result
Estimated monthly cost
$24.75
Monthly requests
16,500
Monthly tokens
27,225,000
How to use this calculator
What this calculator does
Project monthly AI token spend from daily usage, average prompt size, and response size.
How to use it
Enter your model pricing, daily requests, average input tokens, average output tokens, and active days per month, then review the result, formula, example, and FAQs below. Try a few scenarios to see which inputs move the result most.
What the result means
Use the result to compare scenarios and spot cost drivers. Actual spend can change with provider pricing, model routing, retries, caching, usage spikes, and workflow design.
Browse more ai calculators for related estimates and comparisons.
Actual AI costs depend on provider pricing, model choice, token usage, discounts, caching, retries, batching, tool calls, workflow design, and usage volume.
Scenario guidance
When to use this
Use this when AI usage repeats across days and you need a monthly run-rate for budgeting or vendor comparison.
Example scenario
An operations team wants to estimate what a weekday-only internal assistant will cost after adoption grows across a department.
Inputs that usually matter most
- Daily requests, because small per-request costs become meaningful at steady volume.
- Average input tokens, especially if each request includes customer records, documents, or chat history.
- Active days per month, which should reflect real usage rather than a default calendar month.
Common mistake to avoid
Avoid using a single best-case prompt sample as the monthly average if real users paste longer context or ask follow-up questions.
How to interpret the result
Use the result as a monthly planning estimate and compare low, expected, and high usage cases before committing budget.
Actual spend can shift with provider pricing, model routing, cached context, retries, workflow design, and usage spikes.
Formula
This multiplies daily volume by active days, then applies the selected model's input and output token prices.
Example monthly usage
750 daily requests over 22 days with balanced pricing is about $24.75 per month.
Frequently Asked Questions
Should I use calendar days or workdays?
Use the number of days your users or systems actually send requests.
Does caching change this estimate?
Yes. Cached inputs, batch discounts, or provider-specific discounts can lower the actual bill.
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