No. 11of 27 ·Keyword Clustering Tools

Seonio Keyword Clustering

Web· paid plans from $0.63/mo

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Seonio Keyword Clustering is ranked #11 of 27 in keyword clustering tools on Freedom251. It runs on Web. There is a free plan. Paid plans start at $0.63/mo.

Seonio Keyword Clustering plans and pricing

All plans

Free Free $ 0 /month 10 credits / month · Free forever · all tools included seonio.com · 9 Oct 2026

Starter (annual) $7.50/yr $ 7.5 /month · Billed annually at $90 1,000 credits / month · all tools included seonio.com · 9 Oct 2026

Starter $10/mo $ 10 /month 1,000 credits / month · all tools included seonio.com · 9 Oct 2026

Pro (annual) $15/yr $ 15.0 /month · Billed annually at $180 2,500 credits / month · all tools included seonio.com · 9 Oct 2026

Pro $20/mo $ 20 /month 2,500 credits / month · all tools included seonio.com · 9 Oct 2026

Business (annual) $30/yr $ 30.0 /month · Billed annually at $360 6,000 credits / month · all tools included seonio.com · 9 Oct 2026

Compared on keyword clustering tools

Free plan: No
Paid from: $15/mo
Clustering method: serp
SERP analysis: Yes
API access: Yes

Best Seonio Keyword Clustering alternatives

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One bar Absolute Cluster Free tier No. 1$19/mo6.4 One bar beserp Keyword Clustering Free tier No. 2Free6.4 One bar Cluster Army Keyword Clusterizer Free tier No. 3Free6.4 One bar ContentGecko Keyword Clustering Free tier No. 4€19.90/mo6.4 One bar Keyword Clustering Free tier No. 5Free6.4 One bar NeedMyLink Keyword Clustering Tool Free tier No. 6Free6.4

The record

Purpose: The product turns a seed keyword into a topic cluster built from live Google rankings.
SERP overlap: It compares keyword pairs using overlap among Google ranking pages.
Clustering algorithm: It maps keywords as a weighted graph and uses the Louvain algorithm to identify topic groups.
Long-tail grouping: It groups overlapping long-tail variants together to consolidate related searches under one page.
Noise filtering: It removes domains such as encyclopedias, marketplaces, and reference sites before clustering to reduce false connections.
Cluster outputs: Each cluster can include a primary keyword, combined search volume, and the specific pages currently ranking for it.
Unmatched terms: Keywords that do not fit a cluster are flagged separately with their search volume preserved.
Competing pages: The tool shows the top 10 organic results for each cluster head term.
Free usage: The product page offers 10 free searches per month with no credit card required.
Credit limits: Unused credits do not roll over, and credits refresh at the start of each billing month.
Report access: Reports remain active for 7 or 30 days depending on the tool, and revisits during that window do not cost another credit.
Support: The product page says its support team responds to email inquiries within one business day.
Security: Seonio says it uses technical and organizational measures designed to protect personal information, while noting that absolute security cannot be guaranteed.
Provider: Seonio.com is provided by Foundea GmbH, located in Ulm, Germany.
Price from: $0.63/mo

Where it ranks on Freedom251

Best Keyword Clustering Tools in 2026#11 of 27

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Sources

seonio.com/product/keyword-clustering· checked 9 Oct 2026
seonio.com/privacy· checked 9 Oct 2026
seonio.com/terms· checked 9 Oct 2026