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This is a comparison of official documentation, not a hands-on benchmark. Evaluate both with the same domain, question and output before choosing.
Define the deliverable first
Choose a real task: find relevant sites that cite competing resources, identify an unanswered question in your topic area, or understand which competitor pages deserve closer inspection. A tool with more reports is not automatically better for that task.
For a founder doing research alone, the deliverable could be a shortlist of ten referring pages with a written reason to inspect each one. For an agency, it might include a repeatable export and a report another teammate can interpret. Those workflows create different evaluation criteria.
Compare the documented workflows
Ahrefs describes Site Explorer as a way to investigate a website’s organic search and backlink profile. Semrush documents backlink analytics plus dedicated backlink and keyword gap workflows. Both cover more than one research task; treating this as “backlinks versus keywords” would be misleading.
Use this table as a starting checklist. It describes documented capabilities rather than a claim about which provider has the most complete data for your market.
| Your task | Ahrefs starting point | Semrush starting point |
|---|---|---|
| Inspect a competitor’s referring pages | Site Explorer backlink research | Backlink Analytics |
| Investigate organic pages and queries | Site Explorer organic research | Keyword Gap and organic research workflows |
| Find potential gaps between domains | Compare findings from competing sites | Backlink Gap or Keyword Gap |
| Make a usable outreach shortlist | Inspect the source pages behind the report | Inspect the source pages behind the report |
Run the same-project evaluation
Use your domain and two competitors that serve the same reader. Write a single question, such as “Which practical resources earn references from newsletters our buyers read?” Apply the same inclusion criteria in each tool. Record the date, filters and export fields so you can compare the work rather than your memory of it.
Open a sample of the referring pages. Is the reference still present? Is the topic relevant? Does it explain why the resource was cited? Count how many usable prospects remain after inspection. More rows in an export can mean more cleanup rather than a better shortlist.
- Use the same domains and research question.
- Inspect the actual referring pages, not just the scores.
- Record time spent filtering and checking the shortlist.
- Check whether the export fits your existing worksheet.
- List questions the tool could not answer.
Treat estimates as research inputs
A third-party traffic estimate is not the competitor’s analytics account. Domain metrics are provider-specific indicators, not a universal measure of commercial value. Do not combine scores from different providers into one trend line or report an estimated traffic increase as a verified business result.
When two tools disagree, investigate the source pages and the decision you are trying to make. You may not need to resolve the entire difference to choose a useful article topic. Keep your own Search Console and product analytics as separate evidence about your actual site.
Choose a workflow your team will repeat
If backlink investigation is your immediate job, start the evaluation in the backlink reports of both products and compare the quality of the inspected shortlist. If cross-domain gap analysis is central, include Semrush’s dedicated gap workflows in the evaluation. Neither starting point establishes a universal winner.
Before committing, check current access limits, seats, exports and the reports available to your account. Have the person who will use the tool complete the task. A polished report produced by someone else does not tell you whether your own weekly workflow will be manageable.
Turn the research into something readers can use
The next step after a gap report is not automatically another article. It might be an export checklist, a worked example or a clearer product demonstration. Write the reader’s missing answer before selecting the format.
If the gap involves a visible software task, show the task with your own recording. A short ugcpeople reaction can introduce that demonstration when it fits the story. It is an editing ingredient, not a substitute for the original research or a reason someone should link to the page.
Questions & answers
Which tool is better for a small startup?
Use the same small research task in both and compare the usable output, cleanup and account requirements. This documentation-based comparison does not establish a hands-on winner.
Should I use both?
Only if a second tool answers a recurring question your existing workflow cannot. Duplicate reports alone do not establish a need for another system.
Are their traffic estimates actual competitor visits?
No. Treat third-party estimates as research inputs and label them accordingly. They are not access to a competitor’s private analytics.
Sources & further reading
Sources checked September 26, 2026. Tool features and availability can change.
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