Free 2026 decision tool

Build vs Buy: Should You Custom-Build Your AI App?

In 2026, most B2B teams spend $40,000–$120,000 over three years on SaaS seats, integrations, and workarounds. When the app is the product — your data flywheel, margins, and roadmap — a custom AI-native build often breaks even in under 3 years. Use the calculator below for your scenario.

Your scenario

Recommendation

3-year SaaS stack cost (est.)
$87,000
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When to buy SaaS

  • Commodity workflow (CRM, billing, email) with minimal differentiation.
  • Under 20 seats and low customization — time-to-value beats ownership.
  • No proprietary data loop — switching costs are low.

When to build custom

  • The software is the business model (marketplaces, AI copilots, games).
  • You need deep AI features competitors cannot replicate from a SaaS API.
  • Multi-year SaaS + integration spend exceeds ~$60k — custom build ROI flips positive.

Ready for numbers on your exact scope? Try the AI app development cost calculator or book a free scoping call.