Semust API vs SERP Split
| Semust API | SERP Split | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | No |
| Paid from | $19/mo | — |
| Open source | No | No |
| Platforms | api, extension, Web | Web |
| Free plan | Yes | Yes |
| Paid from | 19 /mo | — |
| Experiment method | time_based | holdout |
| Organic traffic impact | Yes | Yes |
| Ranking impact | Yes | — |
| Search data source | search_console | search_console |
| Supported page types | articles and entire sites | Similar pages; pages with metadata, headings, templated copy, schema, internal links, content, or performance changes |
Both are listed in Best SEO Testing Software. On The Geeks Club, SERP Split scores higher on our published basis.