Competitor analysis and keyword gap
Find who you compete with, then what they have that you do not
Enter your domain for the sites you compete with in Google. Pick one for the keyword gap: the keywords only they rank for and the ones you share, side by side. Or paste a list of keywords to see who ranks most for them.
- Organic competitors
- Keyword gap in one click
- SERP competitors for any keyword list
$0.03 – $0.05 to find competitors, shown before it runs. What it costs
Keyword gap analysis
Keywords only they rank for, and keywords you both rank for, load together. Sort by volume or difficulty, select the opportunities and save them to a project.
SERP competitors for your keywords
Paste up to 200 keywords to see which domains show up most for them, often a different list from the one you would write from memory.
How it works
How to use the competitors
- 1
Search
A keyword, a domain or a page, with the country, city or state, and language next to it.
- 2
See the price
The cost of the whole search shows before anything runs. A repeat is free.
- 3
Get the whole picture
Everything loads together. The address holds the search, so you can share it.
Use it to
Competitors use cases
Find your real competitors
The sites you compete with in Google, not just in business.
Fill content gaps
Keywords a competitor ranks for and you do not are new ground to cover.
Defend what you share
See every keyword you both rank for.
Map a niche
Paste the keywords of a topic to see who owns it.
What it costs
Competitors pricing
$0.03 – $0.05 to find competitors. You pay the data provider for the lookups a search runs, from your own key, and see the price before it runs. A keyword gap costs $0.06 – $0.36 depending on how many keywords come back. Competitor data is cached for a week.
| Part of the search | Price |
|---|---|
| Organic competitors (top 50) | $0.03 – $0.05 |
| Keyword gap: only they rank (up to 500) | $0.03 – $0.18 |
| Keyword gap: both rank (up to 500) | $0.03 – $0.18 |
| SERP competitors for a keyword list | $0.03 – $0.05 |
Search data
Start with $5 of free search data
Keyword, ranking and backlink data in OpenSEO comes from YepAPI. Sign up there and new accounts get $5 in free credit, for a limited time. That is enough to try every tool before you spend anything.
- 1
Sign up at YepAPI
New accounts get $5 in free credit, for a limited time.
- 2
Copy your API key
It is on your YepAPI dashboard once you sign in.
- 3
Paste it into OpenSEO
During account setup, or later in Settings. Every tool works from there.
The free credit is YepAPI’s limited-time offer and may end. After it, you pay YepAPI per lookup, at the price OpenSEO shows before each one runs. See pricing
SEO glossary
What is a keyword gap?
A keyword gap is the set of keywords that one or more competitors rank for but your site does not, or ranks for much lower. Keyword gap analysis compares the rankings of several domains side by side to find those keywords. It is a quick way to find proven topics that already bring competitors traffic.
Related SEO terms
A content gap is a topic or keyword your audience searches for that your site doesn’t cover, often one your competitors already rank for.
Share of voice is your share of the visibility in a market, such as the share of AI answers or search clicks that go to you versus competitors.
Organic search is the unpaid part of search results, where pages appear because the search engine judged them relevant, not because someone paid.
Keyword research is finding the search terms your audience uses, then judging which ones are worth targeting by demand, difficulty and intent.
Topical authority is a site’s perceived depth and expertise on a subject, built by covering it thoroughly and being cited on it.
Competitors FAQ
Do I need a project?
No. The SEO tools work on their own, in any market you pick. Keywords you find can be saved to a project in one click when you want to track them.
Can I share a result?
Yes. The search, the market and the open tab are all in the page address, so a link or a bookmark opens the same view. Anyone opening it runs the search with their own key; a repeat of something already looked up is served from the cache for free.
More SEO tools
Keyword overview
Difficulty, volume, traffic potential, volume by country, keyword ideas and the live top 10 for any keyword, in any country, state or city.
Keyword ideas
Matching terms, related searches, questions and Google suggestions from one seed keyword, with volume, difficulty, intent and trend.
SERP checker
The live top 10 for any keyword on desktop or mobile, in any country, state or city, with every result’s authority, links and traffic.
Domain overview
Traffic and its value, keywords, links, authority, ranking spread, top keywords, top pages and competitors of any domain.
Page analyser
Authority, links and traffic of any page, its title, description and headings checked, the keywords it ranks for and its strongest backlinks.
Backlink checker
Totals, monthly history, strongest backlinks, referring domains, anchors, top linked pages and link intersect for any domain or page.
AI visibility checker
Ask ChatGPT, Gemini, Claude and Perplexity the same question with web search on, and compare the sources each one cites, in order. Is your site among them?
Local rank checker
Google Maps rankings for any keyword across a grid around a city: the top 20 businesses at every point, and any business’s rank in each cell.
