The short version
- Rank Math PRO is €95.88/year for unlimited personal sites. AIOSEO Basic is $250/year for one site. For self-owned projects the gap is enormous.
- AIOSEO’s tiers are sold by site count — 1, 3, 10, 100 — which suits agencies with a fixed portfolio and punishes anyone with two sites.
- AIOSEO is stronger on local SEO with multiple locations and WooCommerce; Rank Math is stronger on schema breadth at the free tier.
- Both have free versions on the WordPress plugin directory. Both are sufficient for a basic site.
All in One SEO is the oldest name in this category and Rank Math is one of the newest, and they have ended up with almost opposite commercial models. Rank Math sells capability tiers with generous site allowances; AIOSEO sells site counts with capability gated behind them. That single difference decides most of these comparisons before anyone opens a feature list.
The short answer
Fit for your workflow
Rank Math for your own sites. AIOSEO if you need multi-location local SEO.
Rank Math is substantially better value for anyone running their own projects, and its free tier is the most generous in WordPress SEO. AIOSEO earns its higher price when you need its local SEO with multiple locations, its WooCommerce depth, or the internal link assistant at the Pro tier.
- One personal site
- Rank Math free, then PRO if you want keyword tracking.
- Several of your own sites
- Rank Math PRO — unlimited personal sites for €95.88/year.
- Multi-location local business
- AIOSEO Plus at $500/year — the local features are the reason.
- Agency, ~10 client sites
- AIOSEO Pro at $1,000/year, or Rank Math Business at €299.88/year for 100 client sites.
Pricing
AIOSEO lists each tier against a "regular" price roughly double the selling price. We have recorded both, because a permanent discount anchored to a price nobody pays is a pricing pattern worth seeing plainly.
Compare the two licence models at the scale you actually operate. One site: AIOSEO Basic $250/year against Rank Math PRO €95.88/year. Ten client sites: AIOSEO Pro $1,000/year against Rank Math Business €299.88/year, which covers 100. On price alone this is not a close contest, and any comparison that concludes otherwise is worth reading sceptically.
On permanent "50% off" pricing
AIOSEO’s pricing page shows each tier at roughly half a stated "regular" price. Anchoring like this is legal and common across the WordPress plugin market, but it means the discount is not a reason to buy now. Evaluate the selling price on its own merits and ignore the crossed-out number entirely.
Capability comparison
Both score "partial" on implements-fixes because a WordPress SEO plugin genuinely does write output into your site — meta tags, schema, sitemaps — unlike a research suite that only reports.
That last note is worth dwelling on, because it is the one respect in which WordPress plugins serve a different purpose from diagnostic SEO suites. Semrush will tell you your meta descriptions are missing. Rank Math and AIOSEO will actually put them there. The plugin is doing implementation work; the suite is doing diagnosis.
Where AIOSEO is genuinely ahead
- Multi-location local SEO. Opening hours, multiple business locations, location-specific schema — handled properly rather than as an afterthought.
- WooCommerce. Product schema and store-specific handling are deeper.
- Internal link assistant at the Pro tier, which is a genuinely useful feature and rarer than it should be.
- Site-count licensing is simpler to reason about for an agency with a fixed client list.
Where Rank Math is genuinely ahead
- Free tier scope — the most generous in the category by some distance.
- Price per site at every tier for self-owned projects.
- Schema flexibility without paying, including custom schema.
- Built-in Search Console data, so a small site owner does not need a second tab.
The ceiling both of them hit
A plugin can only act on what WordPress exposes. It sets the title tag; it does not decide whether your page is genuinely the best answer to a question. It emits structured data; it does not fix a theme that renders three H1 elements on a template. It manages redirects; it does not resolve a content strategy where nine pages compete for one query.
Most WordPress sites that plateau have immaculate plugin settings and unresolved architecture. Once titles, meta, sitemaps and schema are handled — which either plugin does in an afternoon — the remaining work is in templates, content and internal linking. See WordPress vs Next.js for SEO if you are also weighing the platform itself.