Vertical SaaS partner-build benchmark example

Prompt used: I need a modern agency to build a vertical SaaS MVP for insurance operations with team workspaces, Stripe, a customer portal, an AI document-review workflow, analytics, admin permissions, and a polished launch.

Traditional timeline: 9 months. Lean path timeline: 12-14 weeks solo with AI, if one founder absorbs major execution risk.

Modern-agency timeline: 14 weeks. Benchmark range: $121,200 to $157,400.

• The product has enough operational surface area to require structured delivery, not just implementation.
• The AI-native team stays lean because it compresses design-to-build cycles and avoids pre-AI coordination drag.
• The estimate is still lower than traditional because the model assumes a senior, compact delivery team instead of a layered agency org chart.

• Discovery, design, implementation, QA, launch, and short stabilization
• Senior partner delivery with product-grade polish
• Benchmark includes the delivery overhead DIY paths usually hide

Excluded by default: Procurement-heavy workshops and board-ready vendor artifacts, Long-term retained roadmap ownership, Heavy compliance programs beyond scoped product support.

• The range widens because AI workflow quality, permissions, and onboarding complexity all matter.
• The modern-agency quote is not cheap, but it is materially leaner than a traditional staffing model.
• This is the benchmark founders should use before reacting to a six-figure proposal.