AI Spending Forecast

Project your monthly AI bill forward as usage grows.

AI spend rarely holds still — it climbs as you ship features and add users. This monthly ai burn calculator projects that curve: enter your current monthly bill and a growth rate, and it compounds the number forward month by month into a live line chart with the total over the period. Use it as an ai budget projection when you're planning next year, or an llm spend forecast to see how a steady growth rate turns today's modest bill into a much bigger one.

Your usage

Projected spend in month 12

$4,675

$33,635 total over 12 months

Now → month 12

Starting / mo
$1,200
Ending / mo
$4,675
Total spend
$33,635
Growth / mo
12%

This compounds your current monthly spend at a fixed growth rate — a simple projection, not a prediction. Real AI bills jump with launches, seasonality and price changes, and a steady percentage rarely holds for long. Use it to pressure-test a budget, then revisit as your actual usage lands.

How it works

  1. 1

    Enter your current spend

    Put in this month's total AI bill across every model and tool. That's month zero, the base the projection grows from.

  2. 2

    Set the growth rate

    Drag the month-over-month growth slider to match your trend — a fast-scaling product might grow 20% a month, a steady one a few percent. Go negative to model usage winding down.

  3. 3

    Read the curve

    The line chart plots spend from now to the month you choose. The headline shows the projected monthly bill at the end, with the running total for the whole period beside it.

Instant & 100% private — nothing is uploaded

Every calculation runs locally in your browser. The prompts, token counts and numbers you enter stay on your own device and are never sent to a server — nothing is stored, logged or shared.

Frequently asked questions

How does the spending forecast work?
It takes your current monthly spend and applies the growth rate you set, compounding it each month — so 10% growth turns $1,000 into $1,100, then $1,210, and so on. The chart plots every month and the total sums them across the period you pick.
What growth rate should I use?
Look at your last few months of AI invoices and work out the average month-over-month change. Early products often grow fast and erratically; mature ones settle into single digits. If you're unsure, run an optimistic and a cautious rate and budget for the range between them.
Is this a prediction of my real bill?
No. It's a simple compound projection, not a forecast of reality. Actual AI bills jump with launches, seasonality, model swaps and provider price changes, and a fixed percentage rarely holds for long. Use it to pressure-test a budget, then update it as real numbers land.
Can I model spend going down?
Yes. Set a negative growth rate to project a shrinking bill — useful if you're moving to a cheaper model, trimming token usage, or adding caching. The chart slopes down and the total reflects the lower monthly figures.

Important

For planning and estimates only. Prices come from a published rate table dated on the page; providers change pricing without notice, and token counts here are approximations. Confirm against the provider’s own pricing before you budget or commit.