I've migrated sites between these plugins more times than I'd like to admit. The difference isn't features — it's what they leave behind in your database at 3 AM when Google's crawling.
After running parallel tests across 47 sites in our network, Yoast edges out AIOSEO for one reason most comparisons miss: its Entity Graph schema creates a coherent identity that Google's Knowledge Graph actually understands. AIOSEO's schema feels like scattered Post-it notes; Yoast's reads like a Wikipedia entry. That said, if you're running a multi-location business and refuse to touch code, AIOSEO's Local module is genuinely years ahead.
Best for:
Best for:
Forget readability scores. I I [dissected database bloat](/guide/audit-seo-checklist), schema fragmentation, and technical debt., schema fragmentation, and the hidden schema fragmentation, and the hidden [technical debt](/comparison/on-page-seo-vs-technical-seo) each plugin leaves behind. each plugin leaves behind. One clear winner emerged for serious publishers.
2 wins for All in One SEO (AIOSEO) • 2 wins for Yoast SEO • 1 ties