What are methods for keyword clustering and topic modeling?

Author:Semrush Team
1 min read
Sep 25, 2025

Methods for keyword clustering and topic modeling include automated clustering based on search intent, SERP overlap, semantic similarity, and manual clustering.

Keyword clustering and topic modeling help organize large keyword lists into groups that can be used for content creation.

Here are the two main ways to do clustering:

  • Automated Clustering: Use SEO tools with built-in clustering features that automatically group keywords based on search intent, SERP overlap, and semantic similarity. Tools like Keyword Strategy Builder can handle this process for you, saving time when dealing with extensive keyword lists.
  • Manual Clustering: Organize keywords into topic groups yourself by reviewing them directly. This approach works particularly well for smaller keyword lists or when you want complete control over how keywords are grouped together.
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