6+ Best Keyword Clustering Tools To Build Topical Authority [2024]

Updated on: January 12, 2023 by Eddy Ballesteros

Are you ready to master keyword clustering and save time creating optimized topic clusters for your blog?

Keyword clustering is an invaluable SEO strategy, allowing you to break search terms into related themes, making content creation easier.

The right tool ensures a smooth workflow while saving keystrokes and headaches in the long run. We've rounded up the best keyword clustering tools available in 2024 that can help you easily create targeted topical clusters!

Keep reading to discover what they are and how they can boost your SEO efforts.

Best Overall


Writerzen box

Writerzen improves content creation for bloggers and SEOs.

Best Runnerup

Surfer SEO

Surfer SEO Tool

Surfer SEO Is the top tool for SEOs who want exact word count and keywords.

Best Alternative

SE Ranking


Your favorite all-in-one SEO tool for topical mapping or keyword research.

What Are The Best Keyword Clustering Tools?

We looked at various criteria for our top picks to provide the best keyword cluster tools in 2024.

These included ease of use, accuracy, speed, affordability, and customer ratings.

Our selection process ensures that these advanced keyword clustering tools will take your SEO game to the next level and make keyword clustering a breeze.

Now let's jump into our top picks for keyword clustering tools

1. WriterZen


WriterZen is the ideal solution for keyword clustering and content creation.

The tool offers a one-stop shop for finding closely related topics, creating groups of keyword variations, and exploring Google search insights. WriterZen makes it easy to identify content gaps in competitors’ websites while also providing data to help you access ranking topics and headlines.

Its user-friendly interface is intuitive and simple, walking you through the keyword clustering process step by step.

Additionally, WriterZen has an advanced filtering system that allows users to easily store headlines, topics, keyword lists, and content ideas.

With its mindmap view feature, users can more easily visualize their topic clusters, making it easier to assess website visibility and architecture.

This excellent keyword clustering tool lets you plan a more organized site architecture that Google's E-E-A-T metrics will love.

Not only that, but it also helps increase website visibility through hyperlinks and establish a well-structured knowledge base.

This contender for the best keyword grouping tool also has a keyword explorer and an SEO-optimized text editor with NLP (Natural Language Processing) term suggestions to help you boost your content.

AI writing assistant and plagiarism checks are also available to ensure your content is created flawlessly.

This tool allows users to bid goodbye to writer’s block while exploring new angles and content gaps to help them create the perfect topic clusters.

Overall, WriterZen is the best keyword grouping tool to save you time while providing quality results.

Key Benefits

  • Easily create optimized topic clusters
  • Save time and headaches in keyword grouping
  • Intuitive and simple user interface
  • Visualize keyword clusters for easier assessment of website visibility
  • Establish a well-structured knowledge base
  • Increase website visibility through hyperlinks
  • Create content with ease without suffering from writer’s block
  • Get high-quality content from an AI Writing Assistant and Plagiarism Checker.
  • Access ranking topics and headlines with the keyword explorer.
writerzen logo

Eddy's Take

Writerzen is a powerful tool for beginners and experts. Whether you need to do keyword research or audit existing content, this tool can help you.

Read Review

Favorite Feature:

Using Machine Learning For Cluster

Annual Discount:


Ease of Use:



Starts At $39/month

2. Surfer SEO

Surfer SEO

Surfer SEO Keyword Research and Content Planner offers a comprehensive suite of keyword clustering tools for content creation.

It lets you discover dozens of relevant topic clusters quickly and helps you plan an effective content strategy immediately. The tool also provides a keyword research tool, so you can easily generate briefs with catchy headlines in seconds.

Surfer SEO can write and optimize content in any language, ensuring the authenticity of your article. Their AI text generator can publish content in minutes and rank highly on Google.

And it integrates seamlessly with Jasper, Google Docs, and WordPress so that you can publish your work quickly. The Grow Flow feature is especially useful for content planning, as it helps you plan your content pipeline with fresh content ideas.

The NLP-ready keywords and relevant internal link suggestions are also great features that help give you a competitive edge in the SERPs. 

Finally, Semrush integration allows you to analyze website growth and performance while getting an insight into competitor backlinks.

So, you won't need any other SEO tools when you have Surfer. So if you're looking for a comprehensive keyword clustering solution, Surfer SEO Content Planner is one of the best tools on the market in 2024.

Key Benefits

  • Discover relevant topic clusters and group keywords with ease.
  • Generate content briefs fast with catchy headlines.
  • Write and optimize content in any language.
  • Integrates seamlessly with Jasper, Google Docs, and WordPress.
  • Grow Flow feature for efficient content planning and content distribution
  • NLP-ready keywords and relevant internal link suggestions.
  • This clustering tool comes with an in-built plagiarism checker.
  • Semrush and Google Search Console integration to analyze website growth and performance.
Surfer SEO Logo

Eddy's Take

Creating content for users and SEO can seem complicated, but Surfer SEO completely changed that. I've learned how to use this content brief generator to create better content that my readers love and rank in search results.

Favorite Feature:

SEO Audit

Annual Discount:


Ease of Use:



Grow Flow Account - $249 

Keyword Insights AI

Keyword insights AI

Keyword Insights is the perfect tool for anyone looking to take their keyword research to the next level.

With an intuitive interface and powerful features, you can quickly generate thousands of keyword ideas and group them into related clusters.

This helps you optimize for more than one primary keyword at a time, taking the guesswork out of content production.

In addition, it takes time and effort to find gaps in your content and simplify topical modeling. Not only that but with Keyword Insights, you can also easily create AI-assisted content briefs thanks to its keyword discovery tool.

You’ll also be able to identify the search intent behind keywords, identify keyword cannibalization, and find internal linking opportunities in minutes.

Overall, Keyword Insights is the perfect tool for anyone who wants to master keyword clustering quickly and easily.

So, if you’re serious about improving your SEO efforts, we highly recommend trying out Keyword Insights! It can help you save time, energy, and money in the long run!

Key Benefits

  • Simplifies Topical Modeling
  • Allows you to group keywords in a hassle-free way
  • Finds Gaps in Content
  • Generates thousands of Keyword Ideas
  • Comes with an Intuitive Interface
  • Powerful SEO Features
  • Optimizes for more than one keyword at a Time
  • Creates AI Assisted Content Briefs
  • Identifies Search Intent
  • Finds Internal Linking Opportunities
  • Helps Save Time, Energy and Money in the Long Run.
Keyword Insights AI

Eddy's Take

Keyword Insights is a powerful machine learning cluster tool.

Favorite Feature:


Annual Discount:


Ease of Use:



$49/month - $599/month

SE Ranking Keyword Grouper


With SE Ranking Keyword Grouper, you can quickly get the best keyword combinations for your website with just a few clicks.

It allows you to segment keywords into clusters or keyword groups from Google search engine results pages (SERPs) to distribute them across different pages or posts on your website.

Besides, SE Ranking Keyword Grouper will highlight the most important keywords from Google SERPs to help you plan the architecture of your website most effectively.

With one click, you can check search volume data for all keywords directly in the tool and save keyword research time by eliminating manual grouping mistakes.

Another great feature of SE Ranking keyword grouper is that the tool provides keyword suggestions based on the target audience location, even if you’re targeting multiple countries.

The pricing of this keyword grouping tool is also very affordable - only $0.004 per query! So, you won't need to look for any free keyword grouping tool because of such an affordable price.

Overall, SE Ranking Keyword Grouper offers an efficient and powerful solution for optimizing your SEO efforts in a cost-effective way.

Key Benefits

  • Allows you to group keywords into related themes
  • Highlights the most important keywords from SERPs
  • Checks search volumes for all keyword groups directly in the tool
  • Provides keyword suggestions based on target audience location
  • Affordable pricing – only $0.004 per query!

Keyword Cupid

Keyword Cupid

Keyword Cupid is the perfect tool for any content creator, SEO strategist, or website owner seeking to create topic clusters quickly and effectively to boost their rankings on Google.

By clustering keywords by intent, it allows you to create fully relevant content silos that are optimized for your target audience.

Utilizing this powerful tool can help you skyrocket your rankings and capture user search intent while providing powerful insights on ranking factors. Keyword Cupid provides a live keyword data pull to simplify the process, allowing you to get the latest keyword trends in real-time.

It also features an interactive mindmap that can help you visualize your clusters and create relevant silo structures for your topics.

Plus, it offers an affordable pricing option to fit any budget. In short, it is an indispensable tool for any content creator seeking to master keyword clustering quickly and effectively. With Keyword Cupid, you can create optimized topic clusters in no time!

Key Benefits

  • Get the latest keyword data and trends in real time
  • Visualize the keywords grouped and create relevant silo structures for your topics
  • Affordable pricing options available to fit any budget
  • Create optimized content clusters quickly and efficiently
  • Gain insights on ranking factors while optimizing your content
  • Boost your rankings on Google and capture user search intent

Cluster AI


Cluster AI lets you easily import any keyword list from Ahrefs, SEMRush, Moz, and Google Search Console.

It will then crawl search engines to make keyword decisions and compare different keywords for ranking difficulty to create clusters.

This tool helps you rank consistently with automated keyword research. It saves time by allowing you to delegate keyword research to your team members with less experience and helps you identify the best topics for content creation.

The tool also suggests NLP keywords that boost your rankings and provides detailed reports on keyword clusters, difficulty scores, and recommendations. 

With Cluster AI, you can quickly and easily create targeted topical clusters in seconds, allowing you to focus on optimizing your website for higher search engine rankings.

Key Benefits

  • Creates targeted topical clusters in seconds
  • Automatically crawls Google to make keyword decisions based on the highest search volume data
  • Compares different keywords for ranking difficulty
  • Suggests NLP keywords that can boost your rankings
  • Provides detailed reports on keyword grouping, difficulty scores, and recommendations
  • Allows you to delegate keyword research to team members.
  • Offers you to import your own data from an Excel file, Google Sheets, or any CSV file.



ZenBrief is an amazing keyword clustering tool that helps you create content briefs and optimize your content. It can take a topic from your research and generate a content brief quickly, enabling you to write easily.

You can customize the content brief to your target audience and get real-time feedback on its depth. ZenBrief also lets you generate SEO-friendly content briefs tailored to your audience's needs. It allows you to invite users so that you can collaborate with them, as well as set permission levels.

You can also manage your content workflow and collaborate on Google Docs with external freelancers, all within the same platform.

It is one of the best keyword clustering tools to help you quickly and efficiently create targeted topical clusters. So, if you’re looking for a comprehensive keyword clustering tool that can save you time and help you create targeted content, ZenBrief is the way to go.

Key Benefits

  • Creates optimized and targeted topical clusters in seconds
  • Creates content briefs quickly and efficiently
  • Customizes the content brief to your target audience
  • Gives real-time feedback on content depth
  • Generates SEO-friendly content briefs
  • Lets you Invite users to collaborate with you on projects
  • Allows you to set permissions levels for various user roles
  • You can manage workflows and interact with external freelancers
  • Keeps track of all your work with a single dashboard.

Why Cluster Keywords?

Clustering keywords is an important part of keyword research. It allows you to create a clear website, blog, or SEO content strategy structure.

Grouped keywords help you to ensure that all of your web pages have the same focus, and appear optimized in relevant searches.

By clustering keywords, you can identify related terms that are likely to be searched by your target audience with the same user intent, allowing you to create content around those topics.

Keyword research tools can help you more effectively reach and engage your customers, improving the overall success of your online presence.

Additionally, keyword clusters enable you to quickly see what terms are related and how they are used to ensure that you use the most appropriate terms for your content.

Keyword grouping accuracy can help you to ensure that when a search engine indexes your page, it can determine the overall topic and pull related content from other pages onto the same page.

This makes it easier for customers to access multiple information about a given subject within one search result, further enhancing their experience with your content.

What Is Keyword Mapping?

Keyword mapping is a method of organizing keywords into categories to create structure within a website or content.

This method of organizing makes it easier for algorithms to understand the content on the site and more accurately rank it in search results. Through keyword mapping by a keyword cluster tool, businesses can ensure that their most important topics are well-structured and easily found by search engine bots.

Keyword mapping can help with content creation and SEO by providing a roadmap for researching relevant topics and creating content focused on specific keywords or phrases.

By having a clear structure in place, businesses can more easily create content that resonates with their target audience and helps to drive organic search traffic. Ultimately, keyword mapping allows businesses to focus their efforts and create a more advanced SEO strategy.

Eddy's Methodology

My biggest goal in blogging or content optimization strategies is to help new content creators rank on Google. I do this by teaching keyword mapping and affiliate strategies based on search engine optimization principles. My research is made up of a few different factors for these tools.

  • Pricing: When optimizing content, it is important to consider the cost of the tools you use. I strive to find affordable options for new blogs so they can get the most out of their time and money.
  • Research: Researching keywords and phrases is important for effectively mapping content.
  • Ease-Of-Use: To make optimizing content easier, even for beginners, I look for easy tools. This helps beginner bloggers start quickly and understand what they need to do.

How do you cluster keywords?

Clustering keywords involves grouping related search terms into distinct topics. This can be done manually or by using keyword clustering tools.

The goal of these paid or free keyword grouping tools is to create keyword groups relevant to the target audience and easily identifiable as a single topic.

Doing this helps organize your content and makes it easier for visitors to find the information they’re looking for.

What are the 4 types of keywords?

The four types of keywords are short-tail, long-tail, answer, and intent targeting.

Short-tail keywords: These are keywords that use no more than two to three words and are the most general of all types of keywords. They are also the most difficult to rank for since they have the highest competition. 

Long-tail keywords: If you're looking for targeted phrases that are composed of four or more words, longtail keywords can be the solution. Longtails have less competition than shorttail keywords and make it simpler to rank higher on search engine results pages. 

Answer keywords: These are phrases that target a specific question and are used to answer a query in search engine results. They work well for SEO since they target users with very specific queries.

Intent targeting keywords: These are keywords that target user intent, or what the user is looking for when they perform a search. If you are able to detect search intent, you can better match your content with the users needs and increase your chances of ranking in the results.

How To Organize A Keyword Cluster?

I keep it simple with google sheets and other free tools such as airtable.

Once you have the starting keyword added into the sheet, you can create a cluster for a single page within your google spreadsheet.

Then you use airtable or different content planning tool to map out your blog post calendar.

Final Thoughts

Keyword clustering is grouping related keywords together to help you target specific topics on your website.

This can improve your SEO by helping search engines understand the topical relationships between your content. Several keyword grouping tools can help you with keyword clustering, and we’ve listed some of the best ones here.

Try them and see if they help you improve your SEO results. Do you have a favorite keyword clustering tool? Let us know in the comments!

Eddy is an AI, SEO, and personal finance blogger who uses and tests products to help others improve their lives through AI and financial literacy. With years of experience in online business, he deeply understands the latest AI and SEO trends. Eddy is also well-knowledged in personal finance and committed to sharing his knowledge and expertise with his readers.

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