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Guide · 8 min read

Custom AI website: cost, timeline & ROI

Real 2026 numbers for building an AI-powered site that ships, converts, and doesn't blow up your runtime bill.

What actually drives the price

Scope drives everything

A brochure site with an AI chat costs a fraction of a multi-tenant AI SaaS with auth, billing and evals. Nail scope before pricing.

AI features aren't free

Model calls, retrieval infra, vector DBs and observability all add up. Budget both build and per-request runtime cost.

Performance is UX

Streaming responses, edge deployment and caching separate a website that feels magical from one that feels broken.

Security & privacy

PII handling, prompt-injection defenses, and regional data residency are non-negotiable — bake them in from day one.

Ship v1 in weeks, not quarters

A tight 4–8 week first release gets you real user data faster than any planning doc ever will.

ROI is measurable

Track lead capture, time-on-site, support deflection and conversion — not vanity 'AI wow' metrics.

Three realistic tiers

Landing + AI chat

Marketing site, CMS, AI chatbot grounded in your docs, contact capture.

USD 3k – 8k
2 – 3 weeks

AI-native web app

Auth, database, RAG pipeline, multi-page product, admin dashboard, evals.

USD 15k – 40k
6 – 10 weeks

Custom AI platform

Multi-tenant SaaS, billing, workflows, custom models, SSO, SLAs.

USD 50k+
3 – 6 months

Where AI websites earn back their cost

  • 24/7 lead qualification without hiring — most SMB sites see 2–4× more qualified inbound.
  • Support deflection: a grounded AI assistant can resolve 40–70% of tier-1 questions.
  • Personalization: dynamic content that adapts to visitor intent lifts conversion 15–30%.
  • Content velocity: internal AI tools cut landing-page production time by half.

Ready to scope your build?

We'll model the cost and ROI with you — no pitch deck required.

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