| Metric | Babel | core-js | Winner |
|---|---|---|---|
| Performance | 33 | 36 | core-js |
| Accessibility | 84 | 88 | core-js |
| Best Practices | 82 | 84 | core-js |
| SEO | 88 | 91 | core-js |
| Security | 64 | 65 | core-js |
| TTFB | 407ms | 374ms | core-js |
| Composite | 71 | 72 | core-js |
core-js outperforms Babel in 7 of 7 categories, with a stronger composite score (72 vs 71). Babel leads in no categories.
Babel doesn't clearly lead core-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 core-js when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 102 audited Babel sites and 1582 audited core-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 →
Send Feedback