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Documentation Index

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What is keyword grouping accuracy?

The minimum number of URLs in the SERPs required to group keywords. The selected grouping accuracy will influence the number of keywords in a single group. The higher the accuracy, the fewer keywords will be put into a single group. By default, we use the value 3. It means if we see 3 common URLs for keywords, these keywords will be put into a single cluster. e.g. Let’s take these two keywords as examples. Keyword 1: weight loss with shots Keyword 2: weight loss with injections For the keyword ‘weight loss with shots, the SERPs in the United States return the following top 10 results: 
www.mayoclinic.org
www.cuimc.columbia.edu
www.cuimc.columbia.edu
www.medicalnewstoday.com
www.cuimc.columbia.edu
www.stylecraze.com
www.fda.gov
www.simply-slim.com
www.goodrx.com
www.wegovy.com
For the keyword ‘weight loss with injections’ the SERPs in the United States return the following top 10 results: 
www.fda.gov
www.goodrx.com
www.goodrx.com
www.saxenda.com
www.cuimc.columbia.edu
www.wegovy.com
www.goodrx.com
www.medicalnewstoday.com
www.scientificamerican.com
www.hopkinsmedicine.org
We can see that there are four common URLs 
www.cuimc.columbia.edu
www.goodrx.com
www.medicalnewstoday.com
www.fda.gov
So, we will cluster/group these into a single cluster. You can change the values in our advanced settings. Go to Keyword clustering and click the advanced settings toggle.
Important to remember, we look at the full ranking URL when clustering and not the root domain.
Clean Shot 2026 01 29 At 17 56 40@2x
  1. Toggle advanced settings
  2. Select the algorithm type
  3. SERP grouping accuracy
  4. Topical cluster strength