SEOKEY vs Slim SEO (2026): which should you pick?
As of Nov 13, 2026, we pick Slim SEO: it is first in our ranking of SEO plugins and apps, and it grades higher too, 3.4 against 2.6.
Checked Oct 23, 2026 and Nov 12, 2026 · graded Oct 23, 2026 and Nov 12, 2026 by ToolGPA
Slim SEO grades higher on the free plan, features, ease of use and platforms. They get the same grade on value for money.
Price, platforms and features side by side. The table says where each price was read and when.
SEOKEY
WordPress SEO plugin with a site-wide audit and auto fixes
Slim SEO
WordPress SEO plugin that sets meta tags and schema with no setup
Which one is for you
Pick SEOKEY if
- Fits if you run WordPress and want technical fixes applied for you
- Works for owners of several sites, with 5 sites at $99 a year
Look elsewhere if
- Not for you if your site is not on WordPress, since it only runs there
- Tight if you stay free: Search Console, 404 monitoring and traffic advice need a paid licence
- Watch out: prices are ex-VAT and per year
- Watch out: the WordPress.org page says the free plugin was not tested with the last three major WordPress releases
Pick Slim SEO if
- Fits if you want SEO tags handled with very few settings to touch
- Works for freelancers adding schema and link reports across up to 10 client sites
Look elsewhere if
- Watch out: AI meta writing runs on your own OpenAI, Gemini, Claude or OpenRouter key, billed by that provider
- Tight if you stay free, as the schema builder, link tools, Search Console reports and writing tips are Pro
- Skip it if your site isn't on self-hosted WordPress, as there's no standalone app
- Watch out: Pro includes a year of updates, refunds close after 14 days, and hosts and SaaS firms must ask for a quote
How we grade them
| 2.6GPASEOKEYGood | 3.4GPASlim SEOVery good | |
|---|---|---|
| Value for money | A$49 a year for one site (about $4.08 a month, ex-VAT), under 60% of the cheapest quarter of WordPress SEO plugins ($7.99). Five sites are $99 a year. | APersonal is $59 a year for one site, about $4.92 a month, and renews at the same price. That's under 60% of this category's cheaper quarter. Ten sites are $119 a year and unlimited sites $179. |
| Free plan and trial | BA free edition on WordPress.org with the audit, automatic fixes, redirections and the alt text editor, which one site can use. | AThe free plugin has no caps: automatic meta and social tags, schema, XML, image and News sitemaps, breadcrumbs, redirects, 404 logs and AI meta writing with your own key. The schema builder and link tools are Pro. |
| Features | CAudit, automatic fixes, content advice, redirects and 404s, schema and a Search Console link. The Search Console link, 404 monitoring and traffic advice need a paid licence. | BMeta tags, connected schema, sitemaps, breadcrumbs, redirects, 404 logs and AI meta writing, then on Pro a schema builder with 30+ types, link suggestions, Search Console reports and a writing assistant. It covers the whole job. |
| Ease of use | CNo store rating on record. It applies fixes by itself, but you still install, audit and connect Search Console. | BNo rating on record, but it works as soon as it's on: meta tags, schema and sitemaps are written from your posts with no setup. Only the AI writing needs a key pasted in. |
| Platforms and integrations | CWordPress only, with Search Console, WooCommerce and Yoast named. | BWeb only, inside WordPress. It connects to Search Console, Google Analytics and Tag Manager, and to OpenAI, Gemini, Claude and OpenRouter for AI writing. |
| Best for | automatic technical SEO fixes on WordPress | WordPress SEO with almost no settings |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: SEOKEY and Slim SEO. How we grade
Price against what you get
SEOKEY starts at $4.08 a month when paid by the year and scores 2.0 out of 4 on features, ease of use and platforms. Slim SEO starts at $4.92 a month when paid by the year and scores 3.0.
Slim SEO scores higher, and starts $0.84 a month higher: the question is whether the extra is worth that to you. Of the other SEO plugins and apps on the chart, 7 score higher than SEOKEY for less, and none scores higher than Slim SEO for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- SEOKEY also covers keyword research and site audit.
- Slim SEO also covers content optimization.
At a glance
| SEOKEY | Slim SEO | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $49 per year for 1 website, ex-VAT | $59 per year for 1 site |
| Free plan | Free edition on WordPress.org with the audit, automatic optimizations, redirections and image ALT editor; Search Console and traffic-based advice need Pro. | Free plugin on WordPress.org: automatic meta and social tags, schema, XML, image and news sitemaps, breadcrumbs, redirects, 404 monitoring and AI meta writing with your own API key. |
| Free trial | None listed | None listed |
| Web | ||
| Made by | SeoMix | Slim SEO |
| Price read from | seo-key.com | wpslimseo.com |
| Checked | Nov 12, 2026 | Oct 23, 2026 |
Worth knowing
SEOKEY
- Runs only inside WordPress.
- Prices are listed ex-VAT and per year.
- Search Console connection, 404 monitoring and priority support need a paid license.
- The WordPress.org listing warns the free plugin was not tested with the latest three major WordPress releases.
Slim SEO
- It needs a self-hosted WordPress site; there is no standalone app.
- AI meta writing uses your own OpenAI, Gemini, Claude or OpenRouter key, so the AI provider bills you separately.
- The schema builder, link tools, Search Console reports and writing assistant all need Slim SEO Pro.
- Pro licences include a year of updates and support; refunds can be requested within 14 days.
Key features
SEOKEY
- Global SEO audit
- Scores a site's content and technical setup, groups issues by URL or by problem, and prioritizes the actions to take.
- Automatic technical optimizations
- Applies fixes such as sitemap, canonical and robots meta changes, RSS and date-archive clean-up, and category prefix removal.
- Content advice by keyword
- A targeted keyword can be set per page, and the editor gives recommendations for that keyword and for internal links.
- Redirections and 404s
- Manage 301 redirects and, on Pro, view the 404 errors Google has hit and redirect them in one click.
- Schema.org markup
- Adds person, local business or organization markup and breadcrumb markup, and removes hentry markup containing errors.
- Search Console connection
- Pro connects to Google Search Console, submits sitemaps automatically and shows clicks, impressions and position per page.
Slim SEO
- Automatic meta and social tags
- Writes meta titles, descriptions, robots tags, Open Graph, Twitter Card and LinkedIn tags from each post with no setup, all editable.
- AI titles and descriptions
- The free plugin writes meta titles and descriptions one by one or in bulk using OpenAI, Gemini, Claude or OpenRouter, with your own API key.
- Schema, sitemaps and breadcrumbs
- Adds connected JSON-LD schema automatically and builds XML, image and Google News sitemaps. Pro adds a visual builder with 30+ schema types and custom JSON-LD.
- Redirects and 404 monitoring
- Set redirect rules, force www or non-www, log 404s and redirect automatically when a post's slug changes, on the free plugin.
- Link manager
- Pro scans every link for status, suggests internal links from post content, fixes broken or redirected links in bulk and reports orphan pages.
- Search Console and writing assistant
- Pro shows Search Console performance, keyword and page reports in WordPress, and gives tips on keywords, images, links and readability while writing.
Plans
SEOKEY
Free$0
Site audit, automatic technical optimizations, schema markup, redirections, ALT editor and WordPress.org forum support.
Single$49
per year for 1 website, ex-VAT
Pro features for one site: Search Console connection, 404 monitoring, traffic-based advice and priority support.
Advanced$99
per year for 5 websites, ex-VAT
The same Pro features licensed for up to five websites.
Infinite$199
per year for unlimited websites, ex-VAT
The same Pro features licensed for an unlimited number of websites.
Slim SEO
Slim SEO$0
The free WordPress.org plugin with automatic meta tags, schema, sitemaps, redirects and AI-written metadata.
Personal$59
per year for 1 site, renews at the same price
Slim SEO Pro on 1 site: visual schema builder, link suggestions and health monitoring, Search Console reports and the writing assistant.
Freelancer$119
per year for 10 sites, renews at the same price
The same Pro features on up to 10 sites, with a year of updates and support.
Agency$179
per year for unlimited sites, renews at the same price
The same Pro features on unlimited sites. Hosts, SaaS companies and maintenance services must ask for a quote.
Ways to pay less
SEOKEY
No public discounts listed.
Slim SEO
- Education
Education licence discount on request
The Slim SEO Pro page invites schools and other educational buyers to contact the team for a discounted licence. The amount is not stated.
- Nonprofit
Nonprofit licence discount on request
The Slim SEO Pro page invites nonprofits to contact the team for a discounted licence. The amount is not stated.
Common questions
Which is cheaper, SEOKEY or Slim SEO?
As of Nov 12, 2026, SEOKEY is cheaper to start with: $4.08 a month when paid by the year, against $4.92 a month when paid by the year for Slim SEO. SEOKEY starts at $49 per year for 1 website, ex-VAT, and Slim SEO starts at $59 per year for 1 site.
Which has a free plan, SEOKEY or Slim SEO?
As of Nov 12, 2026, both SEOKEY and Slim SEO have a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.