TOP-5 Best Keyword Grouper Tools to Discover (or Rediscover) in 2023

Keywords are powerful when it comes to website optimization. With the right content, user experience, and other factors, they can bring your pages to the first places in Google SERPs. But what if you have a large website and there are thousands of them, at least several for each page?

You have to group them somehow, right? Otherwise, it’s a pain to go through the list, trying to find similar keywords for one page.

If only there was some kind of keyword grouper or something.

And the digital market has some excellent keyword clustering tools to offer that will make it much easier to navigate your database. In this article, we present the 5 best options with reviews, pricing, pros, and cons.

What Is Keyword Clustering?

Keyword clustering or grouping is a method of query organization that helps SEO specialists and content marketers navigate a large list of keywords and their data. Clustering tools offer to categorize the list based on search intent. Doing so manually would take way too much time, and digital algorithms are often better at it.

As a result, you can insert target queries with the same search intent into one or two blog posts, for example, increasing the chances for a higher ranking and driving high-quality targeted traffic to the pages.

Grouping also helps with building a content structure as you can see the number and diversity of the queries on the list, deciding how many pieces of content are needed to avoid keyword cannibalization.

Linking groups will also help you organize the internal link-building process, encouraging people to read more on your website and spend more time on it. This also helps search engines to crawl your website faster and more effectively.

Basically, you can do it yourself. Just export the lists of keywords from the SEO tool of your choice into an Excel file and categorize them by search intent, topic, etc. But imagine how much time you will waste.

It’s much better to use a tool that will do the job in much less time and without your interference.

Why Is Keyword Clustering Important?

These days, if you don’t use automation, you’re keeping your project behind. Using tools for automation of routine, repetitive processes helps you save time you can put into content writing, keyword research, competitor research, external link building, and much more.

Why not use a digital helping hand?

Besides, as machine learning becomes increasingly popular and useful, it’s only fair to trust an algorithm or AI (artificial intelligence) to do the categorization for your convenience. 

More than that, SEO moves forward from the idea of focusing one page on one keyword. You can rank for hundreds and even thousands of queries with that one page. So, seeing semantically similar keywords and targeting them all at once in one blog post can increase your chances to reach a higher place in SERPs and drive the right people to the site.

The tools we present below can perform keyword clustering accurately by using either live data from related SERPs or NLP (natural language processing). They are extremely useful and can level up your SEO game a lot.

The 5 Best Keyword Grouping Tools

Here, we present the 5 best picks, in our opinion, for semantic keyword grouping. They will help you communicate with search engines and your audience better, putting in less effort. All the tools were tested to see if they are any good.

So, make your choice wisely, but ensure there’s a keyword grouper software in your arsenal.

1. SE Ranking

SE Ranking’s Keyword Grouper tool is close to perfection. It’s not overly complicated, suitable for beginners, yet it offers a great deal of data on your keywords, as well as capabilities for accurate clustering.

It allows you to plan the SEO architecture of your website if you just start building it. I can save you money on mediocre ad campaigns thanks to its PPC grouping. Not to mention it eliminates human error and highlights keywords from SERPs, helping you expand your semantic base with new high-performing queries.

You can also check search volumes of whole clusters, and choose any location and language for proper grouping for different countries. Plus, there are convenient clustering settings that allow you to choose the level of accuracy. The more accuracy you need, the fewer options there will be in one cluster.


  • Intuitive UI
  • Various capabilities in different plans
  • Affordable all-in-one tool
  • Optional accuracy for your needs
  • PPC grouping available


  • The amount of data may be overwhelming
  • API is only available in the more expensive plan


The provider offers a 14-day free trial for most of its tools. The main plans include:

  • Essential – $55 per month
  • Pro – $109 per month
  • Business – $239 per month

You can save 20% if you pay annually. Plus, there’s a pricing calculator and an opportunity to build a custom plan for your needs.


SE Ranking offers decent SEO tools with adequate accuracy. The grouping doesn’t take much time and can be optimized depending on the number of clusters you need and the number of keywords you need for one group. It’s affordable and intuitive, which we love.

2. Serpstat

The Serpstat’s keyword grouping tool is equally effective for short- and long-tail keywords. The solution takes into account both search intent and semantics, as well as 30 SERP listings to analyze the keywords and group them.

You can also choose whether you need wear, medium, or hard clustering, depending on how many clusters you need and how accurately keywords will be placed into each cluster.

Another interesting feature of Serpstat is the ability to analyze the content you have already published and create query clusters similar to that content. This will help you improve the website structure, optimize posts better, and avoid keyword cannibalization.


  • 30 SERP listings included into the analysis
  • Customizable clustering
  • Available for all plans
  • Published posts analysis


  • Keyword difficulty isn’t always accurate


You can get a free trial to see if Serpstat covers your keyword grouping needs. The plans are:

  • Lite – $69 per month
  • Standard – $149 per month
  • Advanced – $229 per month
  • Enterprise – $499 per month

All the plans include the keyword clustering SEO tool.


Serpstat keyword grouper is a great tool with interesting analysis features like the first 30 SERP listings, search intent, semantics, and your previously published posts. This combo provides accurate and effective results. There’s also a free trial and diverse plans for every business.

3. Surfer SEO

Surfer SEO has an effective keyword planner which works based on the NLP technology. You don’t even have to import keywords from any other tool since the solution comes with its own query discovery feature.

So, you can get keyword ideas and their search volume and group them in one go. The categories are pretty extensive, including Local, Customer Investigation, Informational, etc. This allows you to create content that fits the search intent of the user, which is great for both parties. You’re getting targeted traffic, and people find necessary information for them.

Moreover, Surfer SEO  has its own content editor, where you can work on your pieces incorporating all the right keywords right away.


  • Built-in keyword discovery feature
  • Built-in content editor
  • Extensive categories


  • Limited keyword capacity
  • No possibility to add your own keywords


Surfer SEO offers 3 plans:

  • Basic – $59 a month
  • Pro – $119 a month
  • Business – $239 a month

If you pay once a year, you can save 17% of the total price.


Surfer SEO is a great choice if you don’t need too many keywords. Its database is quite limited, but the additional features are very convenient. Not to mention the UI is very intuitive and suitable for beginners. It’s a nice keyword grouping tool, but the price is quite expensive.

4. SpySERP

SpySERP keyword grouping tool will help you distribute the queries correctly throughout your website, avoiding keyword cannibalization. It also takes the competitiveness of each keyword into account to assist in building pages that will definitely rank higher.

It determines what keywords have medium to low difficulty, showing you opportunities for faster and higher rankings. According to the provider, this is one of its primary goals.

You can choose settings for different clusters, adjusting them to the volume of keywords and precision you need. The tool also has a drag & drop feature that allows you to move keywords between groups to customize them.


  • Customizable clusters
  • Settings available for each group
  • Very affordable
  • Free plan available


  • Sole keyword checks may be inconclusive
  • No PayPal payments
  • A card required for free trials


There’s a basic free plan if you don’t need a large number of keywords. You can also get a free trial for the Pro plan, but a credit card is needed for that. 

The paid plans are:

  • Pro 10K – $9 a month
  • Enterprise – custom pricing upon quoting

And if you pay annually, you can save 20% of the total price.


SpySERP has some interesting features that aid in creating customized clusters perfect for your website. There are lots of free opportunities like a whole plan and free trials. Besides, the monthly payment for the Pro plan starts at only $9.

5. Cluster AI

Cluster AI by Content Distribution is a dedicated keyword clustering tool. It uses real-time data from SERPs to determine keyword groups. The first results page is analyzed to see what keywords share the same URL. If there are 3 or more links per a certain combination of keywords, they are grouped together.

According to the provider, the tool can save you as much as 90% of the time you would usually spend on keyword research.

Keep in mind that you’ll have to import the keywords into the tool to cluster them. Your email is also needed to notify you of the results.

In the final document, you’ll see the categories, the search volume of the major keywords in each category, as well as all the other variations and queries added to the group.


  • Easy-to-use solution
  • Choose any country for grouping
  • Effective results


  • Quite expensive given the toolset
  • No additional keyword data


The range of plans is impressive:

  • Hobbyist – $39 a month
  • Consultant – $89 a month
  • Team – $179 a month
  • Team+ – $249 a month
  • Agency – $389 a month
  • Enterprise – $699 a month


Cluster AI is one of the simpler keyword clustering tools that are pretty basic and effective. For the price, we expected at least additional keyword data or other features. It does the job well, though.


Keyword clustering tools aren’t marketed as actively as competitor or keyword research tools, for example. However, we have found some really nice picks for you to choose from.

Make the decision based on your budget, the capacity you need, and UI. Many people neglect the importance of user interface, but when you’re short on time and want to use a tool for automating your SEO processes, the speed of navigation is important.

The affordability is also a crucial factor because paying extra for a tool that is considered additional isn’t the best idea.

Based on these arguments, we’ve chosen SE Ranking Keyword Grouper as our top pick. It’s intuitive, has additional accuracy settings for clustering, offers keyword and cluster data on the go, and it won’t take too much from your wallet.

Besides, it’s an all-in-one tool, so, for a monthly payment, you get access to major tools like Keyword Research, Competitive Research, Backlink Checker and Monitor, and more. Additional tools are also available, as well as custom plans for businesses and specialists with specific needs.

Sounds pretty good, doesn’t it?

The rest of the tools are also worth your attention, of course. Get free trials and see which one suits your project(s) the most!