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SEO Algorithm Keyword Clustering

seo-algorithm.com

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Spec score 7.4 #20 of 27 in Keyword Clustering Tools

What it is

SEO Algorithm Keyword Clustering is a web tool for grouping keyword lists through word stems, AI semantic analysis, or Google-result overlap. CSV and TXT uploads are supported, including the Keyword,Volume format. Stem clustering groups words by roots and is free for up to 200 keywords. AI Semantic looks for synonyms, context, and changes in intent that stemming may miss. SERP-based clustering fetches Google’s live top 10 results for each keyword and groups terms sharing URLs; those results are not cached. Users can choose a Google region or enter a city, region, and country, then set strictness to Loose, Normal, or Tight. The editor allows dragging keywords, merging or splitting groups, and creating groups. Results can be filtered by Commercial, Informational, Transactional, Navigational, or Local intent and sorted by size, alphabetically, intent, or volume. Exports are available in CSV, XLSX, and Google Sheets formats. The Stems plan costs nothing, with no signup or credits.

Spec sheet

Purpose
The tool groups keywords into clusters using stems, AI semantic understanding, or Google SERP overlap.Read 2 Oct 2026 · seo-algorithm.com
AI method
AI Semantic is described as identifying synonyms, context, and shifts in intent that stemming can miss.Read 2 Oct 2026 · seo-algorithm.com
Editing
Users can drag keywords, merge or split groups, and create new groups in the editor.Read 2 Oct 2026 · seo-algorithm.com
Exports
The page lists CSV, XLSX, and Google Sheets export options.Read 2 Oct 2026 · seo-algorithm.com
Input
The tool accepts CSV or TXT uploads and supports a Keyword,Volume format.Read 2 Oct 2026 · seo-algorithm.com
Intent labels
The results interface lists Commercial, Informational, Transactional, Navigational, and Local intent filters.Read 2 Oct 2026 · seo-algorithm.com
Limits of stemming
The maker says stem clustering is word-based, fast, and free, but limited compared with semantic clustering.Read 2 Oct 2026 · seo-algorithm.com
Pricing model
The page describes pay-per-use pricing with no subscription.Read 2 Oct 2026 · seo-algorithm.com
Region settings
The SERP option lets users select a Google region or enter a city, region, and country.Read 2 Oct 2026 · seo-algorithm.com
SERP data
The page says Google top-10 results are fetched live for each keyword and are not cached.Read 2 Oct 2026 · seo-algorithm.com
SERP method
SERP-based clustering uses a live Google top-10 lookup for each keyword and groups by shared URLs.Read 2 Oct 2026 · seo-algorithm.com
Sorting
Users can sort clusters by size, alphabetically, intent, or volume.Read 2 Oct 2026 · seo-algorithm.com
Stem method
Stem clustering groups words by roots and is free for up to 200 keywords.Read 2 Oct 2026 · seo-algorithm.com
Strictness
Clustering strictness can be set to Loose, Normal, or Tight.Read 2 Oct 2026 · seo-algorithm.com

Plans and prices

Stems Free Free up to 200 keywords · no signup · no credits Read 2 Oct 2026 · seo-algorithm.com
AI Semantic Priced on request 12 credits per 1,000 keywords Read 2 Oct 2026 · seo-algorithm.com
SERP-based PRO Priced on request 2 credits per keyword Read 2 Oct 2026 · seo-algorithm.com

Every SEO Algorithm Keyword Clustering plan and price →

Strong points and limits

Strong points

  • Three clustering methods
  • Editable groups with drag, merge, and split
  • Live Google top-10 SERP analysis
  • Intent filters and multiple sorting options
  • CSV, XLSX, and Google Sheets exports

Limits

  • Stem clustering is limited to 200 keywords
  • SERP results are fetched live and not cached
  • SERP-based PRO uses two credits per keyword

Who it suits

It suits marketers and analysts organizing keyword research into editable, intent-aware groups. The free Stem option fits lists of up to 200 keywords, while SERP and semantic methods use credits.

Verdict

This tool combines root-word, semantic, and live-SERP approaches with editing, intent filters, and exports. The free Stems plan is clearly bounded, while credit-based methods have unlisted prices or usage costs to account for.

Where Specifiction places it

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