| Metric | MUI | Next.js | Winner |
|---|---|---|---|
| Performance | 35 | 45 | Next.js |
| Accessibility | 90 | 91 | Next.js |
| Best Practices | 89 | 90 | Next.js |
| SEO | 88 | 94 | Next.js |
| Security | 67 | 71 | Next.js |
| TTFB | 402ms | 370ms | Next.js |
| Composite | 74 | 76 | Next.js |
Next.js outperforms MUI in 7 of 7 categories, with a stronger composite score (76 vs 74). MUI leads in no categories.
MUI doesn't clearly lead Next.js in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.
Choose Next.js when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 22 audited MUI sites and 752 audited Next.js sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →
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