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Seonio Keyword Clustering
What Seonio Keyword Clustering is
Seonio Keyword Clustering turns a seed keyword into topic groups based on live Google rankings. It compares pairs of keywords by the overlap between their ranking pages, maps them as a weighted graph, and applies the Louvain algorithm to identify groups. Related long-tail searches with overlapping results can be consolidated under one page. Before clustering, the tool removes domains such as encyclopedias, marketplaces, and reference sites to reduce false connections. A cluster can include its primary keyword, combined search volume, and pages currently ranking for it. Terms that do not fit a group are flagged separately, with their search volume preserved. The tool also shows the top 10 organic results for each cluster head term. It runs on the web and provides API access. The product page offers 10 free searches each month without a credit card. Unused credits do not roll over, and monthly credits refresh at the start of each billing month. Reports remain available for 7 or 30 days depending on the tool; revisiting them during that period does not use another credit. Paid plans start at $15/mo.
Who it suits
Seonio Keyword Clustering suits people organizing keyword research into pages and topic groups using current Google results. Its free searches can suit those who want to try the workflow before choosing a paid plan.
What it does well
- 10 free searches per month without a credit card
- Groups long-tail terms with overlapping results
- Preserves search volume for unmatched terms
- Shows top 10 organic results for each cluster head
- API access is available
What to know first
- Unused credits do not roll over
- Reports remain active for 7 or 30 days, depending on the tool
Limits
The free plan includes 10 searches per month. Unused credits do not roll over, and reports remain active for 7 or 30 days depending on the tool.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | $ 0 /month · 10 credits / month · Free forever · all tools included | Free |
| Starter | $15 monthly or $120 yearly · All website tools · REST API and MCP · 10 API requests/second · $15 included usage each month · extra usage while active | $15 a month |
| Pro (annual) | $ 15.0 /month · Billed annually at $180 · 2,500 credits / month · all tools included | $180 a year |
| Pro | $30 monthly or $240 yearly · All website tools · REST API and MCP · 15 API requests/second · $37.50 included usage each month · 25% more usage than Starter | $30 a month |
| Business (annual) | $ 30.0 /month · Billed annually at $360 · 6,000 credits / month · all tools included | $360 a year |
| Business | $60 monthly or $480 yearly · All website tools · REST API and MCP · 20 API requests/second · $90 included usage each month · 50% more usage than Starter | $60 a month |
| Starter (annual) | $ 7.5 /month · Billed annually at $90 · 1,000 credits / month · all tools included | $90 a year |
As seonio.com lists them, read 9 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Seonio Keyword Clustering product page.
- Use the free plan for 10 searches per month without a credit card, or choose a paid plan.
- Enter a seed keyword to build a topic cluster.
- Review cluster details, unmatched terms, and the top 10 organic results for a cluster head term.
- Reopen reports during their active 7- or 30-day window without using another credit.
Verdict
Seonio Keyword Clustering ties keyword groups to ranking page overlap and shows useful cluster details, including search volume and current results. The product page offers 10 free searches each month; paid plans start at $15/mo.
Questions
Is there a free plan?
Yes. It offers 10 searches per month without requiring a credit card.
How much do paid plans cost?
The listed starting price is $15/mo. Plans include 1,000 credits per month for Starter, 2,500 for Pro, and 6,000 for Business; annual billing is also listed.
Which platforms does it support?
The product runs on the web. API access is also available.
How does clustering work?
It compares keyword pairs by overlap among Google ranking pages, then uses a weighted graph and the Louvain algorithm to identify topic groups.
How long can I revisit a report?
Reports remain active for 7 or 30 days depending on the tool. Revisiting within that period does not use another credit.
Who provides Seonio.com?
The provider is Foundea GmbH, located in Ulm, Germany.
Facts from Seonio Keyword Clustering's own pages
- API authentication
- API calls use POST requests with JSON bodies and an X-API-Key header, with keys available under account Settings. · seonio.com, 15 Oct 2026
- API availability
- Seonio publishes a REST API with 22 read-only endpoints covering keywords, SERPs, traffic, rankings, authority and backlinks. · seonio.com, 15 Oct 2026
- API documentation
- Each endpoint has request and response fields, examples and an interactive playground for testing calls. · seonio.com, 15 Oct 2026
- Clustering algorithm
- It maps keywords as a weighted graph and uses the Louvain algorithm to identify topic groups. · seonio.com, 9 Oct 2026
- Clustering API price
- The documented keywords/clustering endpoint costs $0.250 per request and groups a seed keyword's topics by shared search results. · seonio.com, 15 Oct 2026
- Clustering basis
- Keyword Clustering groups terms by overlap among live Google ranking pages instead of matching words or relying only on keyword lists. · seonio.com, 15 Oct 2026
- Cluster outputs
- Each cluster can include a primary keyword, combined search volume, and the specific pages currently ranking for it. · seonio.com, 9 Oct 2026
- Company founded
- LinkedIn lists Foundea GmbH as founded in 2016, headquartered in Ulm, Baden-Württemberg, with 2–10 employees. · linkedin.com, 15 Oct 2026
- Company headquarters
- The official legal notice gives Foundea GmbH's address as Lise-Meitner-Str. 9, 89081 Ulm, Germany. · seonio.com, 15 Oct 2026
- Company legal entity
- Seonio.com is provided by Foundea GmbH, represented by Mahir Yildirim, with commercial register HRB 731876 in Ulm, Germany. · seonio.com, 15 Oct 2026
- Competing pages
- The tool shows the top 10 organic results for each cluster head term. · seonio.com, 9 Oct 2026
- Competitive output
- The tool shows the top ten organic results for a cluster head term to expose competitor pages and content formats. · seonio.com, 15 Oct 2026
- Country coverage
- The keyword database currently lists 50 markets, including the United States, United Kingdom, Germany, France, India, Brazil and Japan. · seonio.com, 15 Oct 2026
- Credit limits
- Unused credits do not roll over, and credits refresh at the start of each billing month. · seonio.com, 9 Oct 2026
- Data processors
- The privacy notice identifies Stripe for payment processing, Google for authentication or APIs, and Cloudflare for bot and DDoS protection. · seonio.com, 15 Oct 2026
- False-connection filter
- The product says it removes encyclopedias, marketplaces and reference domains before clustering to reduce misleading topic connections. · seonio.com, 15 Oct 2026
- Free access
- The clustering page advertises ten free searches per month without requiring a credit card, while the current home page also offers a one-time $1 testing balance after verification. · seonio.com, 15 Oct 2026
- Free usage
- The product page offers 10 free searches per month with no credit card required. · seonio.com, 9 Oct 2026
- Independent listing platforms
- GetApp lists web, Android and iPhone/iPad deployment and email/help-desk, FAQ/forum and documentation support, but shows no user ratings. · getapp.com, 15 Oct 2026
- License
- The Terms govern use of the hosted website, reports, API and documentation; they prohibit reselling API access or raw outputs and do not publish an open-source licence. · seonio.com, 15 Oct 2026
- Limit: data reliability
- The Terms warn that SEO metrics, rankings, traffic, backlinks, SERPs and clustering outputs may be incomplete, delayed, approximate, unavailable or inaccurate. · seonio.com, 15 Oct 2026
- Limit: exhausted balance
- When included usage is exhausted, data actions pause until the next refresh or until an active subscriber adds Extra Usage. · seonio.com, 15 Oct 2026
- Limit: G2 evidence
- G2 says Seonio has not been reviewed yet and that there are insufficient reviews to provide buying insight. · g2.com, 15 Oct 2026
- Limit: rate limit
- The Terms state a 20-data-request-per-second account limit across website, REST API and MCP actions, with excess requests potentially rejected as HTTP 429. · seonio.com, 15 Oct 2026
Where Seonio Keyword Clustering stands on Freedom251
- Keyword Clustering Tools#10 of 27