All in One SEO vs Yoast: Which WordPress SEO Plugin to Use

All in One SEO and Yoast SEO do the same core job: they let you control titles, descriptions, sitemaps and schema in WordPress without touching code.

For most sites, either one is fine, and the plugin is not what is holding the site back. That is worth saying before 2,000 words of comparison, because the honest answer to “which should I use” is often “whichever you already have”.

This compares them on the things that actually differ, using each vendor’s own documentation and WordPress.org’s own figures rather than a roundup. It also covers what running Yoast on this site has actually been like, including two things that cost me an afternoon.

The Numbers, From WordPress.org

Checked 21 September 2026, from the official plugin directory rather than either vendor’s marketing:

Both are actively maintained, which is the only thing these numbers reliably tell you. Yoast being five times larger is a fact about market share, not quality.

One detail worth noting because it shows up everywhere: AIOSEO’s own pages say “trusted by over 3 million websites”, while WordPress.org reports 2,000,000 active installs. Vendor counts and install counts measure different things (downloads and past customers versus currently active sites), so treat either figure as marketing rather than measurement.

What Both Do, Free

The free versions overlap almost completely, and the overlap covers what most sites need.

• Title and meta description control, per page and by template.
• XML sitemaps, generated and updated automatically.
• Basic schema markup.
• Canonical URL control.
• Robots meta control, including noindex per page or per content type.
• Open Graph and Twitter card tags.
• Search engine verification fields, so you can add Google and Bing verification without editing the theme.
• Breadcrumb support.

If that list covers what you need, the choice genuinely does not matter much. Pick one and spend the time on content and links instead.

Free versus paid, side by side

The pattern to notice is the bottom four rows. Everything above them is broadly equivalent; the decision lives in how the paid features are packaged.

Where They Actually Differ

Content analysis

Yoast’s readability and keyphrase analysis is the more opinionated of the two. It scores your text against a list of rules (sentence length, passive voice, transition words, keyphrase placement), and shows red, orange and green lights.

Some people find that useful discipline. Others find it produces writing shaped by a plugin rather than by the reader.

A specific warning: those lights are not ranking signals. Google does not measure your transition word percentage. Chasing a green light on every rule is how posts end up with mechanical, evenly-chopped sentences. Use it as a prompt, not a target.

AIOSEO’s analysis is lighter and less prescriptive. Which you prefer is mostly temperament.

How the paid versions are packaged

This is the real structural difference, and it decides the cost more than the headline price does.

• Yoast sells add-ons separately. Premium is one product; WooCommerce SEO, Local SEO, News SEO and Video SEO are each additional purchases, with bundles available.
• AIOSEO bundles by tier. Its plans run Basic (3 sites), Plus (10 sites), Pro and Elite (100 sites), with more features unlocked as you go up rather than bought individually.

So an ecommerce site wanting WooCommerce features buys a second product from Yoast, and a higher tier from AIOSEO. A single blog needing only the core premium features is the reverse case.

Multiple sites

AIOSEO’s licences are explicitly multi-site by tier, up to 100 sites on Elite. If you run several sites, that structure is usually simpler and cheaper.

AI features

Both have added AI in the last two years, and they went in different directions.

Yoast Premium generates titles and meta descriptions with AI, page by page or in bulk. AIOSEO includes AI credits in its plans for generating content and schema, and has gone further on integration: it now ships an MCP server with WordPress Abilities API support, which lets AI agents connect to the site and read or update its SEO data directly.

Whether that last one is useful depends entirely on whether you work that way. It is genuinely the more forward-looking feature of the two, and genuinely irrelevant to most site owners.

Neither plugin decides whether you show up in AI answers. That follows from the same fundamentals as appearing in AI Overviews, being crawlable, answering one question cleanly, and being worth citing. If you want to be explicit about what assistants may use, an llms.txt file is a separate, plugin-independent option.

What neither gives you free

Worth stating because comparison posts often imply otherwise. Both put these behind their paid versions:

• Redirect manager. Both. Free alternatives exist as standalone plugins.
• Automatic internal linking suggestions. Both.
• Multiple focus keyphrases per page. Yoast Premium.
• WooCommerce-specific features. Paid in both.

If the redirect manager is the reason you are considering paying, price a standalone redirect plugin first. It is usually the cheaper answer.

Setup and Day-to-Day Use

Getting started

Both open with a configuration wizard on first activation, and both ask broadly the same things: what kind of site this is, who publishes it, which social profiles to link, and what should be indexed.

Neither wizard takes more than ten minutes, and the defaults are sensible in both. The one answer worth thinking about rather than clicking through is which content types to index. That decision quietly shapes your sitemap and your indexing report for years.

The editing experience

Both add a panel below the editor where you set the title, description and focus keyphrase, with a search result preview.

Yoast’s panel is busier, because the readability and keyphrase analyses live there with their traffic lights. AIOSEO’s is quieter and closer to a form.

Which is better depends on whether you want feedback while writing. If you find scoring distracting, Yoast’s panel is something to collapse rather than a reason to switch.

The settings screens

Both are large. Both have more options than most sites will ever touch, and both hide the important ones a few levels down.

A practical note from using Yoast here: several settings that look cosmetic are not. The taxonomy indexing toggle also controls sitemap inclusion, and the search appearance templates silently apply sitewide. Read what a toggle does before flipping it on a live site.

Support and documentation

Free users of both get community forums on WordPress.org, which are answered but not guaranteed. Paid support is one of the main things the money buys in both cases, and Yoast advertises 24/7 support on its paid plans.

Documentation is comprehensive on both sides. The practical difference is that Yoast, being five times more widely installed, has far more third-party material (forum threads, videos and Stack Exchange answers), for the moment when the official documentation does not cover your exact problem.

Effect on Site Speed

Both are large plugins. Neither is light, and anyone claiming one is dramatically faster than the other is usually measuring something else on their own site.

What is worth knowing is where the cost sits:

• Mostly admin-side. The analysis, the dashboards and the indexing run in wp-admin, not on the pages your visitors load.
• Front-end output is small. Meta tags, canonical, Open Graph and a JSON-LD block. Measured in kilobytes.
• Database growth is real. Both maintain their own tables. Yoast’s indexable table holds a row per URL, which on a large site is a large table.
• The sitemap can be expensive to generate on very large sites, though both cache it.

If a site is slow, the SEO plugin is rarely the reason. Images and third-party scripts almost always cost more. There are more effective places to start than swapping SEO plugins.

Pricing, and Why Every Comparison Post Gets It Wrong

I went to both pricing pages to write this section, and what came back is the reason you should not trust a price quoted in an article like this one.

• Prices are geo-detected. AIOSEO served me Indian rupees, not dollars. A post quoting “$49.50” is quoting what the author saw, in their country, on one day.
• The discount is permanent. Both were running large promotional offers (50% and 60% off), of the kind that is always running. The “normal” price is largely notional.
• Renewal differs from year one. Introductory pricing is not the ongoing cost, and that is where the real comparison sits.

At the time of writing, Yoast SEO Premium listed at $118.80 per year excluding VAT for a single site, with bundles at $178.80 and $358.80. AIOSEO’s tiers ran from Basic upward with heavy first-year discounting.

Treat both figures as indicative and open the pricing pages yourself. Check the renewal price, not the first-year price, and check how many sites the licence covers.

Running Yoast on This Site: Three Things Worth Knowing

This site runs Yoast, currently version 28.5. Three things came up in practice that no comparison post mentions.

1. Yoast caches your titles in its own database table

An author name showing in search results was out of date. I cleared the page cache, the object cache and the CDN. It stayed wrong.

The cause was wp_yoast_indexable, a table where Yoast stores computed titles, descriptions and metadata for every URL. Cache purges do not touch it, because it is not a cache in the usual sense: it is Yoast’s own index.

If you change something that should appear in results and it does not, that table is where to look before you blame anything else.

2. Verification tags without touching the theme

Yoast stores search engine verification codes as options, googleverify, msverify, baiduverify, yandexverify. Filling those in outputs the meta tag for you.

That is worth knowing because the common advice is to paste verification tags into the theme’s header file. On a live site that means editing PHP for the sake of one meta tag, and a syntax error there takes the site down. AIOSEO has equivalent fields.

3. One setting controls both noindex and the sitemap

Category archives on this site were set to noindex through Yoast’s taxonomy setting. The same setting also removes categories from the sitemap entirely, so category-sitemap.xml returns a 404.

That is correct behaviour (there is no point listing pages you have told Google not to index), but it surprises people who go looking for the sitemap and conclude something is broken.

Which One to Choose

Notice what is not in that table: rankings. Neither plugin ranks pages. They make it easier to control the signals you were going to set anyway, and a site that is not getting indexed will not be fixed by switching between them.

Switching Between Them

Both include importers, and migration is usually uneventful. The order matters though.

• Back up the database first. Not the files, but the database, because that is where all this data lives.
• Run the new plugin’s importer before deactivating the old one. Deactivating first means the importer has less to read.
• Check titles and descriptions on a sample of pages afterwards, especially templated ones.
• Check your sitemap URL. It changes between plugins, so resubmit in Search Console and Bing Webmaster Tools.
• Re-enter verification codes. These do not always carry across.
• Keep the old plugin installed but inactive for a week, in case something is missing.

Do not run both active at once. Two plugins writing meta tags produces duplicates, and the resulting output is worse than either alone.

Frequently Asked Questions

Which is better, Yoast or All in One SEO?

Neither is clearly better for a typical site. The free versions cover the same ground, and the choice comes down to whether you want Yoast’s opinionated content analysis and how many sites you need to license. If you already run one, that is usually the right answer.

Is the free version of either enough?

For most blogs and small business sites, yes. The free versions handle titles, descriptions, sitemaps, canonicals, robots meta and basic schema, which is the bulk of what a plugin is for.

Does Yoast or AIOSEO improve rankings?

No plugin improves rankings by itself. They make it easier to set the signals you control. Rankings follow from content, indexing and links, none of which a plugin provides.

Do I need to pay for a redirect manager?

Not necessarily. Both put their redirect manager behind the paid version, but standalone redirect plugins do the same job, usually for less.

Can I run both plugins at the same time?

No. Both generate meta tags, sitemaps and schema, so running them together produces duplicates and conflicting output. Use one.

Will switching plugins hurt my rankings?

Not if the migration is done properly and your titles, descriptions and canonicals survive it. The risk is in a botched import leaving pages with wrong or missing metadata, which is why checking a sample afterwards matters.

Should I follow Yoast’s green light on every page?

No. The traffic lights score your text against Yoast’s own rules, not Google’s. They are a useful prompt for obvious problems and a poor target to optimise towards.