ChatGPT Content Gap Analysis: How to Find Topics Your Competitors Rank For
ChatGPT Content Gap Analysis: How to Find Topics Your Competitors Rank For
TL;DR
A content gap analysis shows which topics and keywords your competitors rank for while you do not. The fastest way to run one today is to combine real SEO data with ChatGPT: export the keyword gap from a tool like Ahrefs, then use ChatGPT to group the gaps into topics, sort them by intent, find new angles and turn them into a content plan. ChatGPT speeds up the thinking, but the search data has to come from SEO tools.
Key takeaways
- A content gap is a missed opportunity. Competitors get traffic for topics your site does not cover yet.
- Start with data, not with ChatGPT. ChatGPT has no search volume or ranking data, so feed it a real keyword gap export.
- ChatGPT is best at grouping and ideas. It clusters hundreds of keywords into topics, sorts them by intent and suggests angles in minutes.
- Prioritize by demand, difficulty and business value. Not every gap is worth an article.
- One gap, one page. Each new topic with its own intent deserves its own page, linked to related content.
Most websites lose traffic not because their content is bad, but because it is missing. Competitors publish answers to questions you never covered, and every one of those pages brings them visitors, links and visibility in AI answers.
A content gap analysis finds those missing topics. In this guide you will see how to run one with ChatGPT and SEO data, with a step-by-step process, a library of prompts you can copy and a real example from our own blog.
What Is a Content Gap Analysis?
A content gap analysis is the process of comparing your website’s content with your competitors’ to find topics, keywords and questions they cover and you do not. The result is a prioritized list of pages to create or improve.
There are three common types of gaps:
- Keyword gaps: searches your competitors rank for and you do not.
- Topic gaps: whole subjects your audience cares about that your site never covers.
- Depth gaps: topics you cover, but more briefly or less helpfully than the pages that rank.
ChatGPT vs SEO Tools for Content Gap Analysis
ChatGPT and SEO tools do different jobs. The best results come from using both.
| Task | SEO tool (Ahrefs, Semrush) | ChatGPT |
| Find keywords competitors rank for | Yes, with real data | No reliable data |
| Search volume and difficulty | Yes | No |
| Group hundreds of keywords into topics | Slow, manual | Fast |
| Sort topics by search intent | Partly | Yes |
| Suggest angles and subtopics | No | Yes |
| Turn gaps into a content plan | No | Yes, with your input |
How to Do a Content Gap Analysis with ChatGPT: Step by Step
Step 1. Choose 3 to 5 real search competitors
Pick sites that rank for the keywords you want, not only your business competitors. Industry blogs and publications often reveal topics that commercial competitors miss.
Step 2. Export the keyword gap from an SEO tool
In Ahrefs, open the Content Gap report, enter your competitors and your domain, and export the keywords they rank for and you do not. Keep volume, difficulty and the competitor URL for each keyword.
Step 3. Export your own content inventory
List your existing pages with their titles, URLs and main topics. This helps ChatGPT see what you already cover, so it does not suggest duplicates.
Step 4. Ask ChatGPT to group gaps into topics
Paste the keyword list and your content inventory into ChatGPT and ask it to cluster the keywords into topics, mark the search intent of each topic and flag which ones overlap with your existing pages. This turns a long spreadsheet into a short list of potential articles.
Step 5. Find subtopics and better angles
For each topic, ask ChatGPT for the questions people ask, subtopics and angles the competitor pages miss, such as a template, a checklist or an example. This is how you create a better page, not just another one.
Step 6. Validate with real data
Check every suggested topic in your SEO tool and in Google: search volume, keyword difficulty, what the top results look like and whether People Also Ask shows the same questions. Drop topics with no demand.
Step 7. Prioritize and build a content plan
Sort the remaining topics by demand, difficulty and business value. Start with quick wins: low difficulty, clear demand and a direct link to a service. Then plan content clusters, where several articles link to one main page. Turn each topic into a brief using our guide to creating an SEO content brief.
ChatGPT Prompts for Content Gap Analysis (Copy and Use)
| Goal | Prompt |
| Group keywords into topics | Here is a list of keywords my competitors rank for and I do not: [list]. Group them into topics, give each topic a working article title and mark its search intent. |
| Remove what you already cover | Here are my existing articles: [titles and URLs]. Which of these topics are already covered, partly covered or missing? |
| Find subtopics | For the topic [topic], list 15 questions people ask before they buy or decide, grouped by subtopic. |
| Find a better angle | Here are the headings of the top 3 articles for [keyword]: [headings]. What do they miss, and what template, checklist or example would make my article more useful? |
| Prioritize | Rank these topics for a site with moderate authority in [niche], based on likely difficulty and how closely each topic relates to [your service]. |
| Build clusters | Which of these topics can form a cluster around a main page about [topic], and how should they link to each other? |
Example: How We Found Gaps in Our Own Blog
In October 2026 we ran this process for the SEO F1RST blog. Our keyword research showed high-demand, low-difficulty topics that the blog did not cover at all, even though they match our core services:
- Answer engine optimization: 7,000 searches a month, keyword difficulty 5
- Google Business Profile optimization: 4,100 searches a month, keyword difficulty 20
website migration SEO checklist and related queries: about 1,800 searches a month, keyword difficulty 0 to 18 - Shopify SEO checklist and Shopify SEO tips: about 2,700 searches a month, keyword difficulty 1 to 4
We checked each topic for overlap with existing pages, picked one primary keyword per article and published guides on answer engine optimization, Google Business Profile optimization, a website migration SEO checklist and a Shopify SEO checklist, each linked to the related service.
Content Gaps in AI Search
Content gaps now exist in AI answers too. When ChatGPT, Perplexity or Google AI Overviews answer a question in your niche, they cite a few sources. If competitors are cited and you are not, that is an AI visibility gap.
To find these gaps, ask AI assistants the questions your customers ask and note which brands and pages they mention, or use AI visibility tools such as Ahrefs Brand Radar. Then create or improve pages that answer those questions clearly, with direct answers, FAQs and specific data. Learn more about our AI SEO services.
Common Content Gap Analysis Mistakes
- Trusting ChatGPT’s keyword ideas without data. Topics that sound good may have no search demand.
- Taking the first answer. Ask follow-up questions, add context about your niche and ask for specific examples.
- Analyzing only direct competitors. Informational sites and publications often rank for the topics you need.
- Creating a new page for every keyword. Keywords with the same intent belong on one page.
- Not documenting the process. Save your prompts, exports and decisions so you can repeat the analysis every quarter.
How SEO F1RST Runs Content Gap Analysis
At SEO F1RST, we combine competitor data from SEO tools with AI-assisted clustering and manual review. We find the gaps that bring the most traffic and leads, check them against your existing pages so nothing competes internally, and turn the best ones into briefs and finished content. Learn more about our content writing services.
FAQ: Content Gap Analysis
What is a content gap analysis in SEO?
A content gap analysis compares your website’s content with your competitors’ to find keywords, topics and questions they rank for and you do not. The result is a prioritized list of new pages to create or existing pages to improve.
Can ChatGPT replace SEO tools for content gap analysis?
No. ChatGPT has no reliable search volume, difficulty or ranking data. Use an SEO tool to find the actual keyword gap, then use ChatGPT to group keywords into topics, sort them by intent and suggest angles.
How often should I do a content gap analysis?
Run a full content gap analysis every quarter and a quick check whenever a competitor publishes content that starts ranking well. Search trends and competitor sites change, so gaps change too.
What is the difference between a keyword gap and a content gap?
A keyword gap is a list of individual searches competitors rank for and you do not. A content gap is the bigger picture: whole topics, questions and depth that your site is missing. A keyword gap is usually the starting point for a content gap analysis.
What if ChatGPT suggests topics outside my expertise?
Ask it to filter the list by your real services and expertise. Topics outside your expertise can still be worth covering if they matter to your customers, but involve a subject matter expert so the content stays accurate.
About the author
Vadym Romakh, SEO and GEO Specialist at SEO F1RST
Vadym has more than 10 years of experience in SEO and leads SEO and GEO strategy for ecommerce, Shopify and B2B brands at SEO F1RST. He holds Semrush certifications in AI search optimization and builds AI-assisted workflows for SEO audits and AI visibility tracking.
Want to know which topics you are missing?
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