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Semrush SEO Writing Assistant

Semrush SEO Writing Assistant is a real-time content optimization tool that scores and suggests improvements for SEO, readability, originality, and tone while you write.

Beginner3 min readUpdated 2026-07-26Reviewed by Lucía Marín

Key takeaways

  • Real-time scoring for SEO, readability, originality, and tone.
  • Integrates with Google Docs, WordPress, and Microsoft Word.
  • Compares drafts to top-ranking SERP content.
  • Includes plagiarism checking and AI rewriting.
  • Part of Semrush Content Marketing toolkit.

Use it to align your writing with current search patterns before publishing.

What People Use It For

  • Real-time SEO scoring – Get a live score and recommendations for target keywords, readability, and tone.
  • SERP comparison – Compare your draft to top-ranking content in Google’s SERPs.
  • Plagiarism checking – Ensure originality before publishing.
  • AI rewriting – Use built-in AI to rephrase sentences for better clarity or SEO.
  • Integration with editors – Works directly in Google Docs, WordPress, and Microsoft Word.
  • Content workflow – Part of Semrush Content Marketing toolkit, linking to SEO Content Template and content briefs.

Quick Start Workflow

  1. Set up target keyword – Enter your primary keyword, location, and device context.
  2. Open the assistant – Use the Chrome extension in Google Docs or the web editor.
  3. Write or paste content – The tool scores your draft in real time.
  4. Review recommendations – Check SEO, readability, originality, and tone scores.
  5. Apply suggestions – Adjust headings, keyword density, sentence length, and more.
  6. Check originality – Run plagiarism check before finalizing.
  7. Export or publish – Copy the optimized content to your CMS.

When Not to Start Here

  • If you need a full SEO suite – This tool focuses on content optimization; for keyword research, competitor analysis, or backlink audits, use the full Semrush platform.
  • If you write only for print – The tool is designed for web content and SEO.
  • If you want a free standalone tool – It is paid; consider Google Trends or Google Search Console for basic insights.
  • If you rely solely on the score – The score is a drafting aid, not a ranking guarantee.

Alternatives

ToolKey Difference
AhrefsStronger backlink analysis and keyword research, but less integrated content editor.
Google Search ConsoleFree, but no real-time writing assistant.
UbersuggestLower cost, but fewer content optimization features.
GrammarlyFocuses on grammar and tone, not SEO scoring.

Next step

FAQ

Is Semrush SEO Writing Assistant free?

It is a paid tool with limited free access through Semrush trials or free account tiers.

Does it work with Google Docs?

Yes, it integrates directly with Google Docs via a Chrome extension.

Can I check plagiarism with it?

Yes, it includes originality/plagiarism checking features.

Related topics

Sources

Reviewed by Lucía Marín, Founding editor.