What should AI cost be as a percentage of revenue?
Finance-minded founders use this to track AI cost as a percentage of revenue. Because AI cost scales with usage, doubling users roughly doubles spend unless you change the model or the token budget — this page shows the curve so you can plan the levers.
Start here: Gross Margin Per Request Calculator
Results update automatically as you type.
- Revenue / request
- $0.1000
- AI cost / request
- $0.000585
- Margin / request
- $0.0994
- Gross margin
- 99.4%
Then: Monthly AI Bill Forecaster
Results update automatically as you type.
- Starting monthly spend
- $1,000.00
- Monthly growth
- 15.0%
- Spend in month 12
- $4,652.39
- Cumulative spend
- $29,001.67
| Month 1 | $1,000.00 | $1,000.00 |
| Month 3 | $1,322.50 | $3,472.50 |
| Month 6 | $2,011.36 | $8,753.74 |
| Month 12 | $4,652.39 | $29,001.67 |
Why this isn't trivial
The part people underestimate: if AI cost grows faster than revenue, margin erodes, so the ratio matters more than the absolute bill. In practice the biggest savings come from tying pricing to usage so the ratio stays stable, so it is worth modelling before you commit.
How it's calculated
We estimate this by dividing projected AI cost by projected revenue and tracking the trend. Every figure uses the current provider prices baked into the site (reviewed daily), and you can override any input to match your own assumptions.
Frequently asked questions
What ratio is healthy?+
Low enough to leave your target gross margin after other costs; watch the trend, not just the level.
What if the ratio rises?+
Reprice, cut token cost, or move usage to cheaper models.
Are these prices up to date?+
Yes. The model prices behind this calculator are refreshed and reviewed daily, so your estimate reflects current provider rates rather than a stale snapshot.
Related
Estimates for planning. Pricing data last reviewed 28 July 2026.