How do I forecast AI costs for a fundraising model?
Costs that look tiny per request add up fast at scale, so founders building investor models need to forecast AI costs for a fundraising model early. This tool extrapolates your current usage to the volume you are planning for, so budget surprises don't happen.
Start here: 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 |
Then: AI Cost Per User Calculator
Results update automatically as you type.
- Monthly AI cost
- $2,000.00
- Active users
- 5,000
- Cost per user
- $0.4000
Why this isn't trivial
The part people underestimate: investors scrutinize how COGS scale, and AI cost that grows with usage must be modeled credibly, not hand-waved. In practice the biggest savings come from tying AI cost to per-user cost times projected users, so it is worth modelling before you commit.
How it's calculated
We estimate this by projecting per-user AI cost across your user-growth curve for the model horizon. 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 do investors want to see?+
AI cost as a clear function of users, with margin holding as you scale.
How do I make it credible?+
Anchor per-user cost in real numbers from this calculator, not guesses.
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.