Book a Demo or Start Free: Which Button Should a B2B Startup Use?

The short answer

Match the button to how people actually buy. If a customer can sign up and get value alone, lead with "Start free". If the product needs setup, a security review or a contract, lead with "Book a demo". In our study of 50 funded AI startup homepages, 52% led with a demo button.

The two buttons at a glance

• Start free: Self-serve products with a quick first win
• Book a demo: Products that need setup, integration or a contract
• Both: One primary button and one quieter secondary link
• What the data says: 52% of funded AI startup homepages lead with a demo

How to decide

• Time to value. Minutes means self-serve. Weeks means a demo.
• Buyer. Developers prefer to try. Executives prefer to talk.
• Contract size. Larger deals usually need a call.
• Capacity. A demo button needs a team that answers quickly.

Make either one work

• Say what happens next, under the button.
• Keep the form short.
• Offer a product tour for people who are not ready for either.

The figure is from our study of 50 AI startup homepages. Studio Huncho designs B2B websites and landing pages. See landing page design.

Related reading: We Studied 50 AI Startup Homepages. Here's What They Have in Common., SaaS Landing Page Design: Section by Section (2026), Best Website Design Agencies for SaaS Startups (2026)

FAQ

Can we show both buttons?

Yes, but make one of them primary.

Where should the button go?

In the header and the hero, and again after the proof.

Does the wording matter?

Yes. Say what the visitor gets, such as "Book a demo" or "Start free".

Working on conversion? Tell us how you sell.