Comparison
Rank Sphere vs SEO.ai
AI content writer with a link-exchange network. From $149 per site per month (public pricing, August 2026).
SEO.ai is a strong AI writer with keyword research and a member link-exchange network. Rank Sphere covers the writing and adds the parts a writer cannot: technical fixes, rank and AI-citation tracking, and a director that runs the plan for you.
| Feature | SEO.ai | Rank Sphere |
|---|---|---|
| Public pricing | $149 per site per month | $49 / $99 / $399 per month, 10 sites on Agency |
| Link building | Member link-exchange network | No link exchanges. Earned mentions only |
| Content sourcing | AI generation with editor review | Every statistic linked to a live source, verified at publish time |
| On-page fixes | Recommendations | Staged, snapshotted, reversible fixes with 14-day rollback monitor |
| AI answer visibility | Not tracked | ChatGPT, Perplexity, Gemini, Claude citation tracking |
| Content volume | Credit-based | Unlimited drafts, plan-based publishing quota |
| Free trial | Yes | 3-day trial on every plan |
Which one fits you
Pick SEO.ai if you only want a writing tool and are comfortable with link exchanges. Pick Rank Sphere if you want the whole SEO function run for you without trading links.
Competitor details reflect their public pricing and feature pages as of August 2026 and may change. Names belong to their owners; Rank Sphere is not affiliated with SEO.ai.