A Next.js marketing site for AI and fintech startups
AI and fintech startups ask more of a marketing site than most. AI products are easiest to understand when you can try them, and fintech products have to earn trust before anyone signs up. Both push the site closer to the product, which is where a coded Next.js site earns its keep.
By Chris, founder of Marshal · Updated 8 October 2026
For AI startups: let people try it
A screenshot of a chat window says very little. A small live demo on the homepage, answering from your own data with sensible limits so it can't run up a bill, shows what the product does in seconds. That needs a real backend behind the page: streaming responses, rate limits and checks that the answers stay on topic. Marshal builds these with the Claude API, retrieval over your own content and evals, inside the site rather than as a chat widget dropped on top.
For fintech startups: earn trust before the sign-up
Fintech visitors are looking for reasons not to trust you. Pages that load fast and work properly on a phone, accessible forms, security headers, a clear privacy policy and cookie consent that works, and regulatory wording your compliance team has signed off are all basics, and they're easier to get right when you control every line of the site.
What Next.js adds
A coded site built on the same stack as many products gives you things a site builder can't:
- Shared components and design tokens, so the site and the product match
- Sign-in, pricing and checkout that connect to the real product and billing (Stripe)
- Live data on the page: status, usage numbers or a working demo
- Full control over speed, metadata and how search engines and AI search see each page
- Deploys on Vercel with a preview of every change before it goes live
When it isn't worth it
If the marketing team edits pages every week, no developer will look after the site, and nothing on it connects to the product, a well-built Framer site is quicker and cheaper to run. Marshal builds both and will recommend the one that fits rather than the one that's more work.
Prices
- Trial · $1,000 – $1,350
- A contained first piece of work so we can test the fit before anything bigger.
- Starter · From $2,000
- A small site or a single product surface, designed and shipped end to end.
- Project · $4,700 – $10,000
- A full site or web app with real backend work behind it.
Prices in US dollars. Retainers are billed monthly and can be cancelled with 30 days notice.
Questions
- Can the site share code with our product?
- Yes. A common setup is one design system used by both, with the marketing site in the same repository as the app or alongside it.
- Who owns the code?
- You do. The repository, the Figma files and every account transfer to you at handover.