Semrush Introduces LLM Gap Analyzer to the App Center
The LLM Gap Analyzer app helps marketers understand how and why their content appears in large language models, and just as importantly, why it does not.
April 21, 2026
What’s New: SEO Writing Assistant Adds “Expand” Feature
Semrush’s SEO Writing Assistant now offers a new “Expand” feature as part of the AI Rephraser tool.
The “Expand” feature allows users to enter a 5- to 50-word sentence and expand on it.
Semrush’s SEO Writing Assistant now offers a new “Expand” feature as part of the AI Rephraser tool.
The “Expand” feature allows users to enter a 5- to 50-word sentence and expand on it.
How It Works
To test out the new text expander feature, we added a simple 5-word question (“What is a Meow Wolf?”) to the “Your Text” area and clicked the blue “Expand” button.
Here’s what we received as a text idea:
Expanding on our original sentence gave us a stronger and lengthier piece of content.
If the first text idea doesn’t quite meet your expectations, you can select Idea 2 or Idea 3 to see other options.
If the first text idea doesn’t quite meet your expectations, you can select Idea 2 or Idea 3 to see other options.
After choosing the suggestion you like most, just copy and paste the text right into your content. It’s that easy!
The Benefits of the Expand Feature
“Expand” offers extra support by sourcing additional info on the topic you’re writing about.
It also helps relieve writer’s block.
Along with the new “Expand” feature, SWA can also “Rephrase” and “Simplify” sentences.
“Rephrase” transforms a 20-word or more sentence into something fresh and new to help avoid plagiarism. For sentences that need condensing, the “Simplify” feature instantly improves readability and can shorten your content.
While the SWA sentence rephraser shouldn’t replace a writer, it definitely helps improve content and enhance the user experience.
It also helps relieve writer’s block.
Along with the new “Expand” feature, SWA can also “Rephrase” and “Simplify” sentences.
“Rephrase” transforms a 20-word or more sentence into something fresh and new to help avoid plagiarism. For sentences that need condensing, the “Simplify” feature instantly improves readability and can shorten your content.
While the SWA sentence rephraser shouldn’t replace a writer, it definitely helps improve content and enhance the user experience.
The SEO Writing Assistant tool is available to users with a Guru subscription.
Expand and strengthen your content
About Semrush
Semrush is a leading online visibility management SaaS platform that enables businesses globally to run search engine optimization, pay-per-click, content, social media and competitive research campaigns and get measurable results from online marketing. Semrush offers insights and solutions for companies to build, manage, and measure campaigns across various marketing channels. Semrush, with over 94,000 paying customers, is headquartered in Boston and has offices in Philadelphia, Trevose, Austin, Dallas, Amsterdam, Barcelona, Belgrade, Berlin, Limassol, Prague, Warsaw, and Yerevan.
