Builder.io
AI App Builder
Framer
AI Website BuilderBuilder.io vs Framer
Side-by-side comparison of detection signals, AI scores, and features. Use our free tool to check which one powers any website.
Side-by-Side Comparison
Example Websites
Builder.io websites
Framer websites
Builder.io
AI App Builder
Builder.io is a ai app builder with an AI Score of 75/100 (AI-Assisted). Our detection engine uses 6 signal patterns to identify Builder.io-built sites.
Framer
AI Website Builder
Framer is a ai website builder with an AI Score of 90/100 (AI-Native). Our detection engine uses 13 signal patterns to identify Framer-built sites.
Platform Overviews
Builder.io
Builder.io is a visual headless CMS and experience management platform that lets marketing and product teams visually edit content on any website or app built with any frontend framework — React, Vue, Angular, Next.js, or even native mobile apps. Unlike traditional CMSes, Builder.io uses a visual drag-and-drop editor that overlays directly on the live site, letting non-developers make layout changes without touching code. It's used by enterprise teams at companies like Microsoft, Snap, and Everlane for landing pages and experiment-driven content. Sites using Builder.io load scripts from cdn.builder.io and include builder-component, builder-block, and builder-content-id attributes throughout the DOM markup — these are the primary detection fingerprints. The Builder.io query API is accessed from builder.io/api/v1/ endpoints. Pricing starts at a free tier, with Growth plans from $10/month.
Framer
Framer is an AI-powered design and publishing platform that lets designers create highly interactive, production-ready websites without writing code. Built on React under the hood, Framer generates real component-based code that performs at a framework level — enabling smooth animations, scroll effects, and responsive layouts that look professionally designed. It's the go-to tool for SaaS marketing sites, designer portfolios, and startup landing pages, and is trusted by companies like Pitch, Linear, and Loom. Framer serves all site assets from its proprietary CDN (framerusercontent.com) and injects distinctive data-framer-* HTML attributes throughout the DOM, making it one of the most reliably detectable AI builders. Sites are hosted on Framer's global infrastructure with custom domain support, and pricing starts at $0 for a Framer subdomain with paid plans from $10/month.
Key Differences
- Builder.io is a AI App Builder while Framer is a AI Website Builder — they serve different primary use cases and aren't always direct alternatives.
- Framer scores higher on AI involvement (90/100 vs 75/100 for Builder.io), meaning it relies more heavily on AI for site generation and content creation.
- Our detection engine identifies Builder.io using 6 fingerprint patterns and Framer using 13 patterns — more signals generally means more reliable detection.
- Builder.io serves assets from
/cdn\.builder\.io/iwhile Framer uses/framerusercontent\.com/i— making CDN domain analysis one of the most reliable ways to distinguish them.
Which Should You Choose?
Choose Builder.io if…
- You prefer a ai app builder solution
- You want heavy AI involvement in the design process
- Builder.io's detection fingerprint of 6 signals means your site is reliably identifiable
Choose Framer if…
- You need a ai website builder approach
- AI-assisted generation is a priority for your workflow
- Framer's ecosystem and community better match your team's existing workflow
Check Which Builder Powers a Site
Curious if a website uses Builder.io or Framer? Scan it now — free.
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