AI SaaS Unit Economics Calculator

AI products have a variable cost that classic SaaS never had: inference. Enter your price, AI cost per user, other costs, and user count, and see your gross margin per user, blended margin, and break-even point, plus what happens if AI costs double or halve.

Price per user / month ($)

AI tokens per user / month (millions)

Blended model price ($ / 1M tokens)

Other variable cost per user ($)

Fixed costs / month ($)

Usage presets:

Paying users: 500

AI cost per user / month

Gross margin per user

Gross margin %

Blended margin (after fixed costs)

Break-even users

Monthly profit at current users

AI cost sensitivity:

Levers to improve AI margin: prompt caching can cut the cost of repeated context by up to 90% on cached reads, and batch processing typically halves the price of non-urgent work. Model both with the prompt caching savings calculator and the batch API savings calculator. Also consider routing simple requests to a cheaper model and capping runaway usage with per-user limits.

Notes: "blended model price" is your average across input and output tokens and across models; token prices used in the presets are approximate, as of July 2026, check your provider's current pricing. Gross margin per user = price minus AI cost minus other variable cost. Break-even users = fixed costs divided by gross margin per user. Healthy SaaS gross margins are typically 70-80%+; many AI products launch below that and climb via caching, routing, and pricing changes.