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Large Scale Study: How Data From Popular Keyword Research Tools Compare

We recently analyzed 10 of the most popular keyword research tools in the SEO industry.

Our goal?

To compare the accuracy and breadth of the data found within each tool.

Specifically, we analyzed monthly search volume, keyword difficulty, CPC estimates and search suggestions across popular SEO tools, including:

To our knowledge this is the first large-scale comparison of the data provided by various keyword research tools.

And now it’s time to share what we discovered.