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Head-to-head · Keyword Clustering Tools

Optiwing vs SEO Keyword Clustering Tool

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Optiwing #1 in Keyword Clustering Tools 9.4/10 Free plan Free plan✓ 2 of 3 features Visit Optiwing
SEO Keyword Clustering Tool #5 in Keyword Clustering Tools 8.8/10 Free plan Free plan✓ 2 of 3 features Visit SEO Tool

Optiwing leads on 0 checks, SEO Keyword Clustering Tool on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOptiwing · 9.4/10
  • Free planboth

Optiwing scores higher on our rubric for keyword clustering tools: 9.4 against 8.8 out of 10; our editors rank them #1 and #5.

On clustering method, SEO Keyword Clustering Tool gives you Hybrid where Optiwing offers Serp.

Optiwing is the better fit for localized SERP clustering in a browser workflow. SEO Keyword Clustering Tool is the better fit for technical users wanting open-source hybrid clustering.

  • Optiwing fits best

    Localized SERP clustering in a browser workflow

  • SEO Keyword Clustering Tool fits best

    Technical users wanting open-source hybrid clustering

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Side by side

Feature Optiwing 9.4/10 Visit ↗ SEO Keyword Clustering Tool 8.8/10 Visit ↗
At a glance
Editor score 9.4 8.8
Ranking #1 in Keyword Clustering Tools #5 in Keyword Clustering Tools
Best for Localized SERP clustering in a browser workflow Technical users wanting open-source hybrid clustering
Pricing model Free plan + paid Free
Starting price $20/mo Free plan
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Browser extension Self-hosted
Platforms Web, Chrome extension Web, Windows, macOS, Linux
Support Email Docs
Integrations 4 integrations 1 integrations
Built for Solo, Small business, Mid-market Solo, Small business
Features Optiwing 2/3 · SEO Keyword Clustering Tool 2/3
SERP analysis ✓ ✓
Batch upload ✓ ✓
API access Not checked yet —
Specs
Clustering method Serp Hybrid
Keyword limit 1000 keywords Not checked yet
Export formats CSV, Excel, JSON CSV, Excel
Our review
Pros
  • Clusters keywords from live Google results and shared top-10 URLs
  • Supports geography, device targeting, bulk CSV uploads, and 1,000 keywords
  • Connects with Ahrefs, Semrush, Google Sheets, and Keyword Planner
  • Combines SERP overlap with local embedding-based semantic clustering
  • Offers Default, Strict, and Balanced Strict algorithms
  • Exports results to CSV and multi-sheet Excel files
Cons
  • Paid usage is credit-based, with one credit required per grouped keyword
  • The free allowance is limited to 100 credits
  • The browser workflow may not suit teams seeking a standalone desktop tool
  • Self-hosted setup requires Python installation and configuration
  • SERP data fetching requires DataForSEO credentials
  • Semantic clustering needs optional dependencies and may vary by revision
Our verdict

Optiwing is a browser-based SEO platform for freelancers, content teams, agencies, and small businesses that need to organize keyword research around actual search results. Its core workflow analyzes live Google SERPs and groups keywords…

Read the review →

SEO Keyword Clustering Tool is a self-hosted Python and Streamlit application for organizing SEO keyword lists into topical groups. It suits SEO professionals and content teams that are comfortable installing and configuring a Python…

Read the review →
  1. OptiwingKeyword Clustering Tools 9.4Free plan
  2. SEO Keyword Clustering ToolKeyword Clustering Tools 8.8Free plan

Strengths and trade-offs

  • Optiwing — where it wins

    • Clusters keywords from live Google results and shared top-10 URLs
    • Supports geography, device targeting, bulk CSV uploads, and 1,000 keywords
    • Connects with Ahrefs, Semrush, Google Sheets, and Keyword Planner

    Where it doesn't

    • Paid usage is credit-based, with one credit required per grouped keyword
    • The free allowance is limited to 100 credits
    • The browser workflow may not suit teams seeking a standalone desktop tool

  • SEO Keyword Clustering Tool — where it wins

    • Combines SERP overlap with local embedding-based semantic clustering
    • Offers Default, Strict, and Balanced Strict algorithms
    • Exports results to CSV and multi-sheet Excel files

    Where it doesn't

    • Self-hosted setup requires Python installation and configuration
    • SERP data fetching requires DataForSEO credentials
    • Semantic clustering needs optional dependencies and may vary by revision
  • Optiwing9.4/10 · Free plan

    A browser-based SEO workspace for localized clustering, bulk analysis, and content planning.

    Visit OptiwingFull verdict →
  • SEO Keyword Clustering Tool8.8/10 · Free plan

    A flexible hybrid clustering tool for technical SEO workflows and local semantic analysis.

    Visit SEO ToolFull verdict →

More comparisons

All keyword clustering tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update