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SEO Clusterizer

seoclusterizer.com

From $29/mo Free plan WebAPI
Visit seoclusterizer.com
Spec score 7.7 #15 of 27 in Keyword Clustering Tools

What it is

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.

Spec sheet

Purpose
The product automatically groups semantically similar search queries into clusters to help plan site structure and content strategy.Read 11 Oct 2026 · seoclusterizer.com
Intended users
The About page identifies SEO specialists, content managers, and marketers as intended users.Read 11 Oct 2026 · seoclusterizer.com
Privacy
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.Read 11 Oct 2026 · seoclusterizer.com
Bulk analysis
Pro and Agency include bulk mode for XLSX or CSV URL lists, producing a single XLSX report with a separate tab for each site.Read 11 Oct 2026 · seoclusterizer.com
Company identity
The About page describes SEO Clusterizer as a tool created by SEO specialists for SEO specialists and lists [email protected] as its contact.Read 11 Oct 2026 · seoclusterizer.com
Content tools
Content Analyzer scores pages across 20 quality factors and generates a content brief, while The Force analyzes Google Top 10 competitor text and identifies missing terms.Read 11 Oct 2026 · seoclusterizer.com
Credential security
The site says credentials for external services are stored server-side in encrypted storage and are not exposed in page code or the browser.Read 11 Oct 2026 · seoclusterizer.com
Exports and integrations
The site lists CSV, JSON, TSV, Markdown, and XLSX exports; JSON is described as suitable for developer and CMS integrations.Read 11 Oct 2026 · seoclusterizer.com
History limits
The site states project history lasts 7 days on Free, 90 days on Pro, and is unlimited on Agency.Read 11 Oct 2026 · seoclusterizer.com
Input compatibility
The FAQ says it supports exports from Serpstat, Ahrefs, SEMrush, and Google Keyword Planner, along with CSV, TSV, and TXT files.Read 11 Oct 2026 · seoclusterizer.com
Methods
The site describes eight clustering algorithms, including rare-word weighting, semantic analysis, hierarchical clustering, multilingual stemming, and spelling-variant tolerance.Read 11 Oct 2026 · seoclusterizer.com
SERP clustering
Its SERP feature groups keywords using overlap among ranking URLs, with results cached for 14 days.Read 11 Oct 2026 · seoclusterizer.com

Plans and prices

Free Free Up to 500 keywords per run · 5 clusterings per day · 8 clustering algorithms · CSV, JSON, TSV export · 30+ languages · Cluster visualization Read 11 Oct 2026 · seoclusterizer.com
Pro $29 a month Up to 15,000 keywords per run · 100 clusterings per day · AI methods (20/day) · Content Analyzer (100/day) · The Force (30/day) · SERP (2,000 keywords/month) · Ahrefs (5,000 keywords/month) · API (1,000 calls/month) · 90-day history · Priority support Read 11 Oct 2026 · seoclusterizer.com
Agency $89 a month Up to 50,000 keywords per run · 500 clusterings per day · AI methods (100/day) · Content Analyzer (500/day) · The Force (150/day) · SERP (15,000 keywords/month) · Ahrefs (25,000 keywords/month) · API (10,000 calls/month) · Unlimited history · Priority 24/7 support Read 11 Oct 2026 · seoclusterizer.com
Enterprise Priced on request Custom limits · Unlimited quotas · Dedicated capacity · SLA guarantees · Dedicated manager Read 11 Oct 2026 · seoclusterizer.com

Every SEO Clusterizer plan and price →

Strong points and limits

Strong points

  • Eight clustering algorithms
  • Supports multilingual stemming
  • Provides SERP and content analysis
  • Exports JSON and spreadsheet formats
  • Free plan supports 500 keywords per run

Limits

  • Free history lasts only seven days
  • SERP results are cached for 14 days
  • Paid plans impose daily and monthly quotas

Who it suits

It suits SEO specialists, content managers, and marketers planning site structure or content coverage. API and bulk-analysis users should review the plan-specific quotas.

Verdict

SEO Clusterizer covers query clustering, SERP grouping, and content-gap analysis with browser and server processing modes. Compare keyword limits, history periods, and feature quotas across Free, Pro, and Agency plans.

Where Specifiction places it

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