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A pricing engine that turns vendor prices into margins
A small library that prices AI products from incompatible vendor rates and shows what a business model earns, month by month.
- Client
- h1902y
- Year
- 2026
- Status
- Experiment
- Timeline
- Started October 2026
The problem
AI vendors price in different units: per minute, per message, per seat, per token. Founders cannot tell what a product costs or earns without a spreadsheet.
What we built
- Rate cards for variable, fixed, step and grant pricing, with exact decimal maths
- Recipes that combine vendors into a product, and scenarios that show revenue, cost, margin and payback month by month
- Versioned price cards that record the source page and the date they were checked
- A first card for Retell
Stack
- TypeScript
- Zod
- Vitest
Where it landed
- 17 automated tests passing
- Feeds the multi-tenant platform’s pricing decisions
Want something like this?
Tell us the idea in a few lines. We will say what week one looks like.
