SEMrush Competitor Analysis: A Simple Guide (2026)
SEMrush competitor analysis is the fastest shortcut a new site has. Instead of guessing what content to create, you look at sites already ranking for what you want. Then you reverse engineer what’s working.
That sounds like it should feel unfair somehow, but it doesn’t. The data is public, and every serious site uses it. The only real edge is whether you bother to look.
This guide covers the exact tools and steps for running a SEMrush competitor analysis from a blank project. It walks through finding competitor keywords and turning that into a content list you can act on this week. If you’re new to the platform, the SEMrush for beginners guide covers the basics first. The site audit guide is worth running before you start publishing against anything you find here.
What is SEMrush competitor analysis?
SEMrush competitor analysis is the process of using SEMrush’s tools to see which keywords a competitor ranks for, how much traffic those keywords bring, and where their backlinks come from. The point is using that data to find gaps your own site can fill. It turns a competitor’s published strategy into a list of opportunities for you.
The output isn’t a copy-paste template. It’s a map of what’s already proven to work in your niche, filtered down to the parts you can realistically compete for given your site’s current size.
Pick your competitors first
Before opening any tool, pick three to five competitor domains. They don’t need to be businesses you compete with directly, because what matters is whether they rank for the topics you want to rank for.
A cooking blog competing on recipe content treats other recipe blogs as SEO competitors. This holds regardless of whether either site sells anything. The keyword overlap is what matters, not the business model.
Run a quick search for your top three target keywords and note which domains show up repeatedly across all of them. Those are your competitors for this analysis.
The SEMrush tools for competitor analysis
Domain Overview
This is where every competitor analysis starts, because entering a domain instantly returns estimated monthly organic traffic, the authority score, top organic keywords, and paid advertising spend. Ten minutes here tells you more about a competitor’s overall strategy than reading their blog for a year.
Organic Research
Click through from Domain Overview, or open it directly, to see the full list of keywords a domain ranks for. You get position, search volume, and estimated traffic per keyword. Sort by traffic to see which pages are doing the heavy lifting for that competitor.
Keyword Gap
Enter your domain alongside up to four competitors. The Missing tab shows keywords every competitor ranks for that you don’t touch at all. The Weak tab shows keywords you rank for, but far below where competitors sit. Both tabs are direct content opportunities.
Backlink Gap
Same comparison structure as Keyword Gap, but for backlinks instead of keywords. It shows which sites link to your competitors but not to you, which becomes a starting list for outreach later.
How to do SEMrush competitor analysis step by step
- Open Domain Overview and enter your first competitor’s domain.
- Record their authority score, estimated monthly traffic, and top five organic keywords.
- Repeat for each competitor on your list.
- Open Organic Research for the competitor with the strongest overlap to your niche.
- Sort their keyword list by traffic and scan the top 20 for content angles you haven’t covered.
- Open Keyword Gap, enter your domain plus all your competitors.
- Export the Missing tab. This becomes your priority content list.
By the end of this, you’ll have a short list of keywords with proof attached. Multiple sites already rank for them, so demand is real and the format works.
Reading competitor data without overreacting to it
Authority score is useful for sizing up a competitor, but it’s SEMrush’s own metric, not a Google ranking factor. A competitor with authority score 45 isn’t automatically unbeatable on every keyword. Some of their rankings come from a handful of strong pages, not uniform site-wide strength.
Estimated traffic numbers can swing wildly for smaller sites. The model is based on rankings and assumed click-through rates, not real analytics. Use traffic figures to compare competitors against each other, not as a precise count of their actual visitors.
The number worth trusting most is keyword overlap, because if three competitors all rank for the same term and you don’t, that’s a real signal regardless of what their authority scores say.
Turning competitor data into your content plan
Export the Missing tab from Keyword Gap and group the keywords by topic. Use the same approach you would with a standalone keyword research export. Some groups will map directly onto posts you can write this month.
For each keyword group, check who currently ranks for it and skim their top result. You’re not copying it. You’re checking whether there’s an angle, a more current example, or a clearer explanation you can bring that the existing top result doesn’t.
If every result for a keyword is thin or outdated, that’s good news, because it means the bar to beat is lower than the keyword’s difficulty score might suggest.
How often to repeat this
Competitor analysis isn’t a one-time setup step. Run it again every couple of months, because competitors publish new content, target new keywords, and sometimes lose rankings you can pick up.
A simple routine: every time you finish a content batch from your current list, spend 30 minutes re-running Keyword Gap. Do this before planning the next batch. New gaps open up as both you and your competitors keep publishing.
Frequently asked questions
How does SEMrush find my competitors?
SEMrush identifies competitors automatically inside Domain Overview based on keyword overlap. It shows a list of domains that rank for similar terms to yours. For a new site with little ranking history, manually picking competitors based on who ranks for your target keywords works better.
What is authority score in SEMrush?
Authority score is SEMrush’s own 0-100 metric estimating a domain’s overall strength, based on backlink profile, organic traffic, and other signals. It’s useful for comparing sites relative to each other. But it isn’t a Google ranking factor and doesn’t predict rankings for any specific keyword.
Can I see what keywords a competitor ranks for in SEMrush?
Yes, through Organic Research. Enter their domain and you’ll see every keyword they rank for, along with position, search volume, and estimated traffic for each one, sortable by any column.
What is the Keyword Gap tool used for?
Keyword Gap compares your domain against up to four competitors. It highlights keywords they rank for that you don’t (the Missing tab) or keywords where you rank far behind them (the Weak tab). Both tabs convert directly into a prioritized content list.
Is SEMrush’s competitor traffic data accurate?
It’s a modeled estimate based on keyword rankings and assumed click-through rates, not real analytics data. It can be significantly off for smaller sites. Treat it as a relative comparison between competitors rather than an exact visitor count.
How many competitors should I analyze?
Three to five is enough for a clear picture. More than that adds noise without adding much insight. The goal is finding patterns that repeat across competitors, not cataloguing every site in your niche.
Once you have a prioritized content list from this analysis, the keyword research guide covers how to refine each topic into the right primary keyword before you start writing.
