Authoritas SEO Platform vs DefiniteSEO
Authoritas SEO Platform
authoritas.com
DefiniteSEO
definiteseo.comSide by side
| Figure | Authoritas SEO Platform | DefiniteSEO |
|---|---|---|
| Price from | £99/mo | $1.66/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | — | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 27 |
| Spec score · SEO tools | 7.8 (#116) | 9.2 (#9) |
| API access | Yes | The maker says users do not need their own AI account or API keys; the documentation references plugin REST routes rather than a separately documented public SaaS API. |
| Founded | 2009 | 2016 |
| Free plan | Yes | Yes |
Plans
Authoritas SEO Platform
- FreeFree
- Essential£99 a month
- Expert£459 a month
- Business£679 a month
DefiniteSEO
- Free (WordPress Plugin)Free
- Solo$59.88 a year
- Business$239.88 a year
- Agency (WordPress Plugin)$479.88 a year
- Free (SEO Audit SaaS)Free
- Starter$178.80 a year
- Pro$598.80 a year
- Agency (SEO Audit SaaS)$1,198.80 a year
- Managed Pro$19.90 a year
- Free (SEO Audit SaaS)Free
In their own words
Authoritas SEO Platform
Authoritas SEO Platform has no write-up on Specifiction yet; its figures are above.
DefiniteSEO
DefiniteSEO brings WordPress SEO tools together with an online audit service for examining site health, AI-search visibility, backlinks, and content. Audits cover technical and on-page SEO, content, links, security, performance, accessibility, and DNS, with fixes prioritized. Its AI-visibility tools check whether ChatGPT and Google AI Overviews cite a site and assess pages for readiness for AI search. The WordPress plugin can apply individual or bulk fixes, schedule automated changes, and reverse changes within 30 days. It works with Classic Editor, Gutenberg, Elementor, and WooCommerce, and can import settings from Yoast or Rank Math. The AI SEO Writer can publish to WordPress or provide content for another CMS. Free options include an unlimited-sites plugin and an audit plan for one project and 50 pages per month. Paid plans are listed from $4.99/mo (annual). The audit service is not a standalone classic rank-tracking or keyword-research suite.