Competitor Keyword Analysis: Step-by-Step Method
Competitor keyword analysis identifies the search terms driving organic traffic to your rivals so you can find gaps in your own strategy. Businesses that run structured gap analyses can increase organic traffic by up to 37% within six months (SearchAtlas, 2025). This guide walks through a repeatable six-step method using Ahrefs and SEMrush.
Why Competitor Keywords Matter
Organic search still accounts for roughly 47% of all website traffic (SE Ranking, 2026). But with AI Overviews reducing click-through rates by as much as 58% on affected queries (The Digital Bloom, 2026), ranking for the right terms is more important than ranking for more terms. Competitor keyword analysis shows you exactly which terms deliver qualified traffic in your market, rather than forcing you to guess.
The Six-Step Method
Step 1: Identify 3 to 5 True Competitors
Start by defining who actually competes with you in search results, not just in your industry. Your search competitors and your business competitors are often different.
How to find them:
- Search your top 10 target keywords and note which domains appear repeatedly in positions 1 through 10.
- In Ahrefs, go to Site Explorer, enter your domain, and select “Organic competitors.” Sort by “Common keywords” to see who overlaps most with your keyword footprint.
- In SEMrush, use “Organic Research” and select the “Competitors” tab for a similar view.
Pick 3 to 5 domains that consistently appear. Avoid choosing massive authority sites (Wikipedia, Forbes) unless they genuinely compete for your service keywords.
Step 2: Pull Their Top Organic Keywords
For each competitor, export their full organic keyword list.
In Ahrefs: Site Explorer > Organic Keywords. Filter by country, then export. Pay attention to “Traffic %” to see which keywords drive the most visits.
In SEMrush: Organic Research > Positions. Filter for positions 1 through 20 and volume above 100 to focus on terms that actually generate clicks.
Export each competitor’s keyword list into a spreadsheet. You want the keyword, search volume, keyword difficulty (KD), current ranking position, and estimated traffic.
Step 3: Run Keyword Gap Analysis
This is where the method gets diagnostic. Gap analysis reveals keywords your competitors rank for that you do not.
In Ahrefs: Use the Content Gap tool. Enter your domain in the “But the following target doesn’t rank for” field, then add your 3 to 5 competitors above. Run the analysis. The output shows every keyword at least one competitor ranks for where you have no presence.
In SEMrush: Use the Keyword Gap tool. Enter your domain alongside up to four competitors. Select “Missing” to see keywords where all competitors rank but you do not, or “Weak” to see keywords where competitors outrank you significantly.
Export these gap lists. They represent your largest untapped opportunities.
Step 4: Filter by Relevance and Difficulty
Raw gap lists contain hundreds or thousands of keywords. Most will be irrelevant. Apply three filters:
- Relevance filter. Remove keywords unrelated to your products, services, or audience. A B2B SaaS company can discard consumer product terms even if competitors rank for them.
- Difficulty filter. Set a KD threshold appropriate to your domain authority. If your Domain Rating (DR) is 30, targeting keywords with KD 70+ is unrealistic in the short term. Focus on KD below 40 for quick wins.
- Volume floor. Eliminate keywords with fewer than 50 monthly searches unless they signal strong purchase intent (for example, “[your product category] pricing” at 30 volume is still worth targeting).
Step 5: Prioritize by Business Value
Not all keyword gaps deserve equal effort. Use this prioritization matrix to score remaining keywords:
| Factor | Weight | Score 1 (Low) | Score 3 (Medium) | Score 5 (High) |
|---|---|---|---|---|
| Search volume | 20% | Under 100/mo | 100 to 1,000/mo | Over 1,000/mo |
| Purchase intent | 30% | Informational only | Research/comparison | Transactional/decision |
| Keyword difficulty | 20% | KD 60+ | KD 30 to 59 | KD under 30 |
| Competitor coverage | 15% | 1 competitor ranks | 2 to 3 rank | All competitors rank |
| Content gap | 15% | You have partial coverage | You have thin coverage | You have zero coverage |
Multiply each score by its weight, sum the results, and sort descending. Your top 15 to 20 keywords become your priority targets.
Step 6: Map to a Content Plan
Assign each priority keyword to a specific content action:
- New page. No existing content covers this topic. Create a dedicated blog post, knowledgebase article, or landing page.
- Content upgrade. You have a page that touches this topic but does not target the keyword directly. Expand the existing content with a new section or deeper treatment.
- On-page optimization. You have a relevant page but the keyword is not in the title, H1, or meta description. Update on-page elements without rewriting the full piece.
Group related keywords into topic clusters. A single pillar page can target a primary keyword while supporting articles target long-tail variations from your gap list.
Tools Compared: Ahrefs Content Gap vs. SEMrush Keyword Gap
Both tools accomplish the same goal with different strengths.
Ahrefs Content Gap updates keyword data hourly and shows intersection filtering (keywords where competitor A AND competitor B rank but you do not). Its strength is granular traffic estimates and the ability to layer filters before exporting.
SEMrush Keyword Gap offers a visual Venn diagram of keyword overlap and supports up to five domains in a single comparison. Its “Weak” and “Strong” views help you separate defensive priorities (keywords you are losing) from offensive opportunities (keywords you have not targeted).
Use whichever tool your team already subscribes to. If you have access to both, run the analysis in each and merge the results. Each tool crawls different data sources, so combining them produces a more complete picture.
How Often to Run This Analysis
Competitive keyword landscapes shift constantly. Run a full gap analysis quarterly. Between full analyses, set up position tracking alerts in Ahrefs or SEMrush for your top 50 priority keywords so you catch ranking changes in real time.
Frequently Asked Questions
How many competitors should you analyze?
Three to five is the practical range. Fewer than three gives you an incomplete view. More than five generates noise that makes prioritization harder without adding proportional insight.
Can you do competitor keyword analysis with free tools?
Google Search Console shows your own keywords but not competitors’. Free tiers of Ubersuggest or Ahrefs Webmaster Tools provide limited data. For a proper gap analysis, you need a paid subscription to Ahrefs or SEMrush.
How long before gap analysis efforts show results?
Expect 3 to 6 months for new content to index and begin ranking. Pages targeting lower-difficulty keywords (KD under 30) often show movement within 60 to 90 days. High-difficulty terms can take 6 to 12 months.
What is the difference between keyword gap and content gap?
Keyword gap identifies specific search terms competitors rank for that you do not. Content gap is broader and examines topics and page types your competitors cover. In practice, keyword gap analysis is the starting point that feeds into a content gap strategy.
Next Steps
Competitor keyword analysis becomes even more powerful when combined with broader competitive intelligence. For a full breakdown of CI tools and workflows, see Competitive Intelligence with AI Tools.
Ready to build a systematic keyword strategy informed by competitive data? Get in touch to discuss how we structure keyword research and content planning for measurable organic growth.