AI changed what your team can build. Your SaaS budget doesn't know it yet.
Whether to Build, Buy, or Adapt now depends on details that didn't matter two years ago. BuildvBuy reruns the math for every renewal under today's engineering assumptions, names every source, and stays independent by structure.
Build a custom replacement with AI-assisted engineering.
Keep paying the vendor when their moat is wider than what you'd save by building.
Deploy and configure an open-source alternative.
Why now
Every SaaS contract was priced before Claude Code.
- 84%
of developers report using AI coding tools in 2025.
Stack Overflow Developer Survey, 2025.
- 55%
faster task completion among developers using an AI assistant.
GitHub Copilot productivity research, 2022.
- 36%
of paid SaaS licenses sit unused at a typical mid-market company.
Productiv State of SaaS, 2024.
Anatomy of a BvB report
What you get when you open a report.
Every published analysis carries the same five elements, in the same order. Open a real one from the buttons below.
Northwind Notes
Knowledge base- Build
- 0.6 FTE day-2
- $760,000
- Buy
- list + seats growth
- $1,620,000
- Adapt
- 0.4 FTE day-2
- $540,000
The score
The deterministic 0 to 100 score. One number, one formula, every input visible in the report.
The recommendation
Build, Buy, or Adapt. One recommendation per report, with the path color carried throughout.
The confidence
How sure we are. Tied to the evidence, not the conclusion.
The TCO
Three-year total cost of ownership across all three paths. Day-2 costs included, never tucked away.
The transparency disclosure
Every source, model, assumption, and last-updated timestamp, on every report. Never collapsed, never gated.
Read a real one
What we cover
A working corpus, not a demo.
The corpus is publishing now. Reports will appear here as analyses ship.
Run the math before you renew.
Free for readers. Pro ($49/mo) for renewal teams — alerts, PDF export, API access, and one bespoke memo each month.