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Should we build this software ourselves or buy an existing tool?

Build only what differentiates you. Everything else is a maintenance liability you're volunteering for. Independent AI perspectives help pressure-test whether your requirement is truly unique.

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Free to try. GPT, Claude, Gemini and DeepSeek answer independently.

What actually decides it

  • Is it a differentiator?

    If customers choose you for it, build. If it's plumbing (auth, billing, email), buy.

  • Total cost of ownership

    Include ongoing maintenance, security and on-call, not just initial build time.

  • Time to value

    Buying gets you live in weeks; building can take quarters.

  • Vendor lock-in and exit cost

    Check data portability and pricing at your future scale.

What would change the answer

  • Whether a vendor covers 80% of requirements
  • Your team's capacity to maintain it
  • Pricing at 10x your current scale

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