Seonio Keyword Clustering

Seonio Keyword Clustering is a web tool for grouping search terms according to overlap in Google results. It is best suited to SEO practitioners planning pages around shared rankings, rather than anyone looking for a platform-independent way to group keywords.

The method yields useful page-planning context, but monthly credits expire and reports are available only for a limited time.

Overview

Start with a seed keyword and Seonio builds topic groups from live Google rankings. It compares pairs of terms by the pages ranking for them, maps those connections as a weighted graph, and uses the Louvain algorithm to identify clusters. That makes the output relevant when deciding which queries may belong on one page, but ties the grouping to observed SERP overlap rather than wording or intent alone.

Key features

Clusters grounded in ranking overlap

Overlapping long-tail variants can be grouped together, helping users consolidate related searches instead of treating every variation as a separate target. Seonio filters domains such as encyclopedias, marketplaces, and reference sites before clustering to reduce false connections. This is a useful guard against those domains distorting a group, though the approach still depends on ranking overlap.

Context for page decisions

A cluster can include a primary keyword, combined search volume, and the pages currently ranking for it. Seonio also shows the top 10 organic results for each cluster head term, giving users competitor context alongside the proposed group. Terms that do not fit a cluster are flagged separately with their search volume preserved, which helps keep outliers in view rather than silently dropping them.

Credits, reports, and support

Monthly credits refresh at the start of each billing month and unused credits do not roll over, so a quiet month does not build a reserve for a later project. Reports remain active for 7 or 30 days depending on the tool; revisiting one within that window does not use another credit. Email inquiries receive a response within one business day. Seonio says it uses technical and organizational measures to protect personal information while cautioning that absolute security cannot be guaranteed.

Pricing

The Free plan costs nothing, is free forever, and includes 10 credits per month with all tools. It is a useful way to try the workflow without a card, but the small allowance is better for occasional evaluation than recurring research.

Starter provides 1,000 credits per month and all tools: $10 a month, or $7.50 a year billed annually at $90. Pro raises the allowance to 2,500 credits per month for $20 a month, or $15 a year billed annually at $180. Business includes 6,000 credits per month for $40 a month, or $30 a year billed annually at $360. Annual billing lowers the stated monthly rate but commits the customer to an annual bill; the larger tiers suit heavier workloads, while Starter is the paid entry point for steady use. All plans share the monthly reset and non-rollover rule.

Platforms

Seonio Keyword Clustering is available on the web, making it an option for browser-based workflows rather than a native desktop or mobile app.

Who it's for

Choose Seonio if current Google ranking overlap is central to deciding how to group SEO targets, and if cluster-level search volume and ranking-page context will inform page planning. Look elsewhere if you need keyword grouping independent of live rankings or want credits to accumulate between months.

Pros and cons

• Pro: Cluster outputs can combine a primary term, total search volume, and ranking pages, connecting grouping to page-planning decisions.
• Pro: Unmatched keywords retain their search volume, so terms outside the main groups remain actionable.
• Con: Credits expire at each monthly refresh, which limits the value of a paid allowance for intermittent projects.
• Con: Reports expire after 7 or 30 days depending on the tool, so they are not a durable archive.
• Con: The SERP-based method is a poor fit when ranking overlap is not the desired basis for clustering.

Alternatives

Keyword Clustering Tools is the broader category directory for comparing options. For a free option across a wider range of platforms, KW Clusterized is listed as free and supports Android, iOS, desktop systems, web, API, extension, and self-hosted use. SEOcluster.ai is another web-based freemium choice, with a free tier that includes one Google Search Console site, up to 1,500 keywords per dataset, three clustering runs per month, two briefs, and one content page.

Absolute Cluster may suit users who want more than clustering in a free web tier: it includes one project, up to 1,000 keywords, SERP-based clustering, content briefs and a roadmap, an internal linking map, exports, and one article draft. beserp Keyword Clustering offers 500 free signup credits with no card required and credits that never expire, making it worth considering for occasional use. SEO Algorithm Keyword Clustering offers a free stems option for up to 200 keywords without signup or credits; its SERP-based PRO and AI Semantic options are also available.

Topvisor is a web, API, and extension option with a free XS plan that includes unlimited projects and keywords. Cluster Army Keyword Clusterizer is a free web-based alternative. ContentGecko Keyword Clustering offers a free version for clustering up to 200 keywords with its standard algorithm, while its paid plan is €19.90 a month and includes 50,000 keyword credits per month.

Verdict

Seonio Keyword Clustering is a strong fit for SEO users who want topic groups tied to current Google results and need search-volume and ranking-page context to plan pages. Its free 10-credit monthly allowance makes the method accessible, and paid tiers scale the quota. Choose another tool if you need credits to carry over, reports to remain accessible longer, or clustering that does not depend on SERP overlap.