Jun 14, 2023

7 Best Topic Cluster Tools: A Comprehensive Guide

Suman Samal, Asst. Marketing Manager
Suman Samal
7 Best Topic Cluster Tools: A Comprehensive Guide
Suman Samal, Asst. Marketing Manager
Suman Samal
Jun 14, 2023

7 Best Topic Cluster Tools: A Comprehensive Guide

Discover the seven best topic cluster tools to boost your content strategy. Learn about their features, pricing and much more in this blog.
7 Best Topic Cluster Tools: A Comprehensive Guide

Table of contents

In the era of search engines, targeting the right keywords and creating quality, well-structured content is crucial to achieving success in search engine optimization (SEO). Topic cluster tools help marketers streamline their content strategy by analyzing and grouping related keywords to build topic clusters. 

These tools enable businesses to target their audience better, improve search engine rankings, and drive qualified website traffic. 

Topic clustering plays a crucial role in search engine optimization (SEO) by aiding in the optimization of a website's content. Through the process of grouping related words or phrases into coherent clusters, marketers gain deeper keyword insights such as user search intent, enabling them to craft compelling content that precisely caters to their target audience. 

Moreover, this practice simplifies the task of optimizing content around specific topics, leading to improved organic traffic, rankings and a significant boost in qualified website traffic. Ultimately, leveraging topic clustering empowers your site to unleash its maximum potential when it comes to search engine visibility and engagement.

Most topic cluster tools work by using natural language processing (NLP) or search results page (SERP) data to classify and group keywords. NLP techniques analyze the semantic relationships between keywords to create groups with similar intent. 

On the other hand, SERP data-driven tools use real-time search engine results to identify overlapping terms and URL usage for more precise keyword groupings. These tools can help marketers build effective topic clusters for their content strategy by classifying keywords based on their associations in search engine result pages.

In this section, we will explore the top topic cluster tools available in the market and provide insights into their features and pricing information.

1. Scalenut 

Scalenut is an AI-powered SEO and Content Marketing Platform that covers the entire content lifecycle. It offers everything from keyword research to content outline, creation, and content optimization on a single platform.

One of the optimization features offered by Scalenut is the Keyword Planner, which examines a list of keywords using search volume, relevance, and CPC metrics. Its primary advantage, however, lies in its ability to automate the process of researching topic-cluster keywords on your behalf.

Utilizing advanced AI technology, Scalenut swiftly analyzes and categorizes search terms, organizing them into groups for each piece of content you generate. This enables you to access a diverse range of relevant keyword clusters that can improve your ranking on search engines such as Google.

In addition to increasing visibility and driving traffic, Scalenut's topic clustering feature also aids in building topical authority. You can also use Scalenut's free topic cluster tool to elevate your content strategy with ease. 

Features of Scalenut 

  • Keyword planner to build content strategy 
  • SERP-based auto-cluster creator to save time spent on grouping keywords 
  • Auto-Outline creator saves time spent on analyzing top-ranking pages
  • Customizable tone of voice to create brand-relevant content 
  • 5-min blog writer (Cruise Mode) to create long-form content quickly,
  • Content Optimizer to rank higher in SERP,
  • Auto-optimizer to minimize the time spent in manual optimization 
  • In-built research tools to save time spent in manual research, 
  • Social listening tools to understand readers’ search queries 
  • 1-click WordPress publish to simplify content migration
  • Traffic analyzer to keep tabs on your content performance

Scalenut Pricing

Scalenut Price

  • Essential Plan: This plan caters to the needs of solopreneurs and freelancers looking for robust content creation tools. With this plan, you get access to five SEO reports and up to 100,000 AI-generated words every month, all starting at just $19/month, paid annually. 
  • Small Business Growth Plan: This plan is custom-made for startups and small businesses that want to elevate their content game. You get unlimited AI-generated words, 30 SEO reports, and advanced features like Instruct AI to Write and Topic Clusters, all starting at $39/month, paid annually. 
  • Pro Plan for Large Teams: The Pro Plan provides top-quality content at scale for established businesses and large teams. This plan comes with all the features of the Growth Plan, a dedicated customer success manager, and multi-user support, priced at $74/month paid annually.

2. Frase

Frase is an AI-powered writing assistant that speeds up the process of producing high-quality articles. It takes a single keyword and generates a well-researched draft by grouping keywords and semantics. 

This topic cluster tool claims to create optimized content briefs in just six seconds, making it an excellent choice for those looking to shorten their content workflow.

Features of Frase 

  • AI-driven content research
  • Keyword grouping and semantic analysis
  • Content Briefing and Competitor content analysis

Frase Pricing 

  • Basic Plan: $19.99/month
  • Premium Plan: $44.99/month
  • Team Plan: $114.99/month

3. Keyword Cupid

Keyword Cupid is a sought-after keyword clustering tool that facilitates content silo construction from extensive data inputs. This tool uses neural network models to reverse-engineer Google's Knowledge Graph in real time. Its mind map feature provides visual representations of information, making it easier to understand the keyword clusters.

Features of Keyword Cupid

- Neural network-powered clustering

- Content silo construction

- Mind map visualization

Pricing Information for Keyword Cupid

- Starter: $9.99/month

- Freelancer: $49.99/month

- Agency: $149.99/month

- Enterprise: $499.99/month

4. SE Ranking

SE Ranking is an all-around SEO tool that offers keyword research and clustering capabilities. Its "Keyword Grouper" tool helps with keyword segmentation and SEO architecture planning. Additionally, it provides semantic suggestions, synonyms, and related terms for alternative keyword choices.

Features of SE Ranking

- Keyword research and clustering

- SEO architecture planning

- Semantic suggestions and alternatives

SE Ranking Pricing

  • Essential - $55.00 per month
  • Pro: $109 per month 
  • Business: $239 per month

5. Zenbrief

Zenbrief is one of the best keyword clustering tools that analyzes your competitors using the same NLP techniques that Google employs, providing reliable suggestions for improvement. Its keyword cluster tool is a bonus feature at no additional cost.

Features of Zenbrief

- AI-powered content creation

- Competitor analysis

- Free keyword clustering tool

Pricing Information for Zenbrief

- Starter: $79/month 

- Premium: $195/month 

- Pro: $295/month 

6. Contadu

Contadu is a SaaS tool that offers NLP suggestions to enhance your content. While it does not have a specialized keyword clustering tool in its suite, it provides two free tools: a "keyword mixer" that displays multiple permutations of a given keyword and a program that groups and organizes related keywords.

Features of Contadu

- NLP-powered content improvement suggestions

- Keyword mixer 

- Keyword grouping and organization

Contadu Pricing 

  • Freelance plan - €39
  • Business plan - €79
  • Agency plan - €149
  • Enterprise plan - €297

7. Cluster AI

Cluster AI is a robust keyword clustering tool that can reduce the time spent on keyword research. It is bundled with other products for content distribution, such as Workello and the Content Operations Framework. Cluster AI integrates with keyword research tools like Ahrefs, MOZ, and Search Console.

Features of Cluster AI

- Time-saving keyword research and clustering

- Integration with popular keyword research tools

- Content distribution capabilities

Pricing Information for Cluster AI

- Hobbyist: $39/month.

- Consultant: $89/month.

- Team: $179/month.

- Team: $249/month.

- Agency: $389/month.

- Enterprise: $699/month.

How Do Topic Clustering/ Keyword Clustering Tools Work? 

Most keyword grouping tools utilize one of two primary strategies when performing the task. The predominant approach involves employing NLP (natural language processing) to categorize keywords based on their meaning. NLP output is typically effective in recognizing keywords within specific contexts rather than on a broader scale.

Various applications leverage search engine results page (SERP) data to gain a more comprehensive understanding of a group of keywords. By analyzing real-time search engine results, users can identify overlapping terms and observe URL usage.

When keywords and URLs frequently appear together, it is possible to classify them based on their associations within search engine result pages. In many cases, this strategy serves as a more accurate indicator of the effectiveness of a large sets of keywords.

Factors to Consider When Choosing the Best Topic Cluster Tool

When selecting the best topic cluster tool for your business, it's essential to consider the following factors:

1. Ease of use: When choosing a topic cluster tool, it's important to consider its ease of use. The tool should have an intuitive user interface that allows you to navigate through the platform easily. The keyword clustering process should be straightforward, enabling you to generate relevant topic clusters without any complications. 

A user-friendly tool ensures that you can quickly grasp how to use it effectively, saving you time and effort in the long run.

2. Integration capabilities: Another crucial factor to consider is the tool's integration capabilities. You want to ensure that the topic cluster tool can seamlessly integrate with your existing keyword research tools or SEO platforms. 

The integration allows for a smooth flow of data between different tools, enabling you to consolidate your research and streamline your content strategy. By choosing a tool that can integrate with your current workflow, you can avoid the hassle of switching between multiple platforms and ensure a more efficient process.

3. Pricing: Pricing is an important consideration when selecting a topic cluster tool. Different tools offer various pricing plans, and it's essential to choose one that aligns with your budget and specific requirements. Consider the features and functionalities offered in each pricing tier to determine if they meet your needs. 

Some tools offer a free or trial version, allowing you to test the tool's capabilities before committing to a paid plan. Assess the value you'll get from the tool and ensure that the pricing is reasonable and justifiable for your business.

4. Feature set: It's beneficial to choose a topic cluster tool that offers a comprehensive feature set. While the core functionality of the tool is keyword clustering, look for additional features that can enhance your content strategy. 

For example, some tools provide content research capabilities, allowing you to analyze the top-performing content in your niche and gain insights into what resonates with your audience. 

Competitor analysis features enable you to assess your competitors' content strategies and identify opportunities for differentiation. NLP-driven suggestions can help generate content ideas and optimize your existing content for better search visibility. By selecting a tool with a rich feature set, you can access valuable insights and optimize your content creation process.

5. Speed and efficiency: The speed and efficiency of the topic cluster tool are crucial for your content strategy. A tool that can quickly generate keyword clusters saves you time and effort. Time is of the essence in content creation, and delays in generating relevant clusters can hinder your productivity. 

Look for a tool that utilizes efficient algorithms and processes to deliver speedy results. Additionally, consider the scalability of the tool. If you have a large volume of keywords or need to generate clusters frequently, ensure that the tool can handle the workload efficiently without compromising its performance.

Considering these factors when choosing the best topic cluster tool for your business will help you make an informed decision that aligns with your needs, budget, and content strategy goals.


By recognizing the significance of topic clustering in search engine optimization (SEO) and familiarizing yourself with the workings of these tools, you can make informed decisions and select the most suitable tool to enhance your content strategy.

With the comprehensive guide provided, you now have a broad understanding of the best topic cluster tools available. However, the journey does not end here. It is now time to delve deeper into these tools, explore their functionalities, and test them according to your specific business requirements. 

By incorporating topic clustering into your content strategy, you can witness improvements in your website's organic rankings, attract more visitors, and ultimately achieve success in SEO.

Among the various options discussed in this blog, Scalenut emerges as a standout tool. Its unique set of features and benefits make it an exceptional choice for implementing topic clustering in your content strategy. 

By employing Scalenut, you can streamline your topic research process, identify content gaps, and create a well-structured and interconnected cluster of content that appeals to both search engines and your target audience. This tool empowers marketers to optimize their content effectively and stay ahead in the competitive online landscape.

All in all, the journey to effective topic clustering and successful SEO involves a thorough understanding of the importance of these techniques, exploration of various topic cluster tools, and careful selection of the tool that aligns with your business goals. 

By leveraging the power of topic cluster tools like Scalenut, you can elevate your SEO content strategy to new heights and drive significant organic growth for your website. Take the initiative today, and witness the transformative impact that topic clustering can have on your online presence. Sign up for a 7-day free trial today

Suman Samal
Asst. Marketing Manager
ABout the AUTHOR
Suman Samal
Asst. Marketing Manager

Suman Samal is a Asst. Marketing Manager at Scalenut. She is a technology enthusiast with a keen interest in content marketing and SEO. She truly believes that with the right set of tools every organization can improve the ROI of their content marketing campaigns. She spends her time managing content operations at Scalenut and ensuring that everything we publish is of the highest quality.

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