Grammarly vs RivalFlow AI vs Surfer SEO vs Writesonic
| Attribute | ||||
|---|---|---|---|---|
| Category | Content & Writing | SEO & Search Marketing | SEO & Search Marketing | Content & Writing |
| Pricing | Free tier | Paid | Paid | Free tier |
| Starting price | $12/month | $79/month | $99/month | $12/month |
| Free tier | Yes | No | No | Yes |
| Free trial | Yes (7d) | Yes | Yes | No |
| Deployment | — | Cloud | Cloud | Cloud |
| API available | Yes | Unknown | Unknown | Unknown |
| Platforms | — | — | — | — |
| Certifications | 1 | — | — | — |
| Integrations | — | — | — | — |
| Company | Founded 2009 | — | — | — |
| Feature attributes | ||||
| Sso Saml | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Rbac | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Mobile App | — Unknown | — Unknown | — Unknown | — Unknown |
| Webhooks | — Unknown | — Unknown | — Unknown | — Unknown |
| Data Export | — Unknown | — Unknown | — Unknown | — Unknown |
| Ai Generation | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Grammar Check | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Plagiarism Check | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Brand Voice | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Browser Extension | ✓ Yes | — Unknown | — Unknown | — Unknown |
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.