Keyword Insights vs SEO Clusterizer
Keyword Insights
keywordinsights.aiSEO Clusterizer
seoclusterizer.comSide by side
| Figure | Keyword Insights | SEO Clusterizer |
|---|---|---|
| Price from | $1/mo | $29/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 5 | 4 |
| Spec score · Keyword Clustering Tools | 8.0 (#9) | 7.7 (#15) |
| Privacy | The privacy policy says Google Search Console data is not shared, used for training or sold, and is deleted when the account is deleted; it also says customer data is not used to train AI or machine-learning systems. | The site says basic algorithmic clustering runs locally in the browser and keyword lists are not uploaded; it says premium AI, SERP, and content-analysis requests are processed on its server and are not used to train models. |
| Purpose | Keyword Insights turns keyword research into topic clusters, content briefs and content, and surfaces Reddit, Quora and YouTube opportunities for visibility in AI answers. | The product automatically groups semantically similar search queries into clusters to help plan site structure and content strategy. |
Plans
Keyword Insights
- Basic$58 a month
- Professional$99 a month
- 7-day trial$1 a month
- $1 trial$1, paid once
- EnterprisePriced on request
SEO Clusterizer
- FreeFree
- Pro$29 a month
- Agency$89 a month
- EnterprisePriced on request
In their own words
Keyword Insights
Keyword Insights has no write-up on Specifiction yet; its figures are above.
SEO Clusterizer
SEO Clusterizer groups semantically similar search queries to support website structure and content planning. It provides eight clustering algorithms, including semantic analysis, hierarchical clustering, multilingual stemming, rare-word weighting, and tolerance for spelling variants. Its SERP feature groups keywords by overlap among ranking URLs, with results cached for 14 days. Content Analyzer scores pages across 20 quality factors and creates a content brief. The Force examines Google Top 10 competitor text and identifies missing terms. Inputs can come from Serpstat, Ahrefs, SEMrush, Google Keyword Planner, CSV, TSV, and TXT files. Exports include CSV, JSON, TSV, Markdown, and XLSX; JSON is described for developer and CMS integrations. Basic clustering runs locally in the browser, while premium AI, SERP, and content analysis run on the server and are not used to train models. Free costs nothing, Pro costs $29 a month, and Agency costs $89 a month.