OnPageSEO.ai vs Semrush
Semrush is a genuinely good tool. It's also $139.95/month and built for teams with a decade of data to mine. Here's an honest read on which one fits your work — including where Semrush wins.
| OnPageSEO.ai | Semrush | |
|---|---|---|
| Entry price | $29/mo (Solo) | $139.95/mo (Pro) |
| Free plan | Yes — full data, fewer refreshes | 7-day trial only |
| Keyword research | Yes | Yes — larger index |
| Rank tracking | Yes, daily | Yes, daily |
| Backlink data | Yes | Yes — larger index |
| On-page audit | Yes | Yes |
| Local map-pack geo-grid | Yes | No |
| AI search visibility | Yes | Limited |
| Chrome extension | Yes, free | Yes |
| Site crawl depth | Focused | Deeper on large sites |
| Historical data | From signup | Years of history |
Semrush pricing as published on semrush.com at time of writing. We re-check it periodically, but verify before making a decision.
Where Semrush wins
It has a larger backlink and keyword index, years of historical trend data we simply don't have yet, and deeper crawling for very large sites. If you're running SEO for an enterprise or need to analyse five years of a competitor's trajectory, Semrush is the better buy and we'd rather say so than pretend otherwise.
Where we win
- Local map-pack geo-grid. Your Google Maps rank plotted at real coordinates across your service area. Semrush doesn't offer this at all — and for a local business it's usually a bigger prize than organic. See how it works.
- AI search visibility. Whether ChatGPT, Google AI Overviews and Perplexity cite your site. As AI Overviews absorb more informational clicks, this is becoming the metric that matters.
- Price. $29/month against $139.95. For most small businesses the extra $110 buys capability they never open.
- A free plan that shows real data. Not a locked preview — your actual rankings, backlinks and keywords, just refreshed less often.
FAQ
Is OnPageSEO.ai a good Semrush alternative?
For most small businesses and freelancers, yes — you get rankings, keyword research, backlinks, on-page auditing and local map-pack tracking for a fraction of the price. If you need a decade of historical trend data or enterprise-scale site crawls, Semrush is still the stronger tool.
How much does Semrush cost compared to OnPageSEO.ai?
Semrush starts at $139.95/month for the Pro plan. OnPageSEO.ai starts at $29/month, and the free plan shows your full data rather than a locked preview.
What does Semrush do better?
Three genuine things: a larger backlink and keyword index, far deeper historical data, and more thorough crawling of very large sites. If any of those is central to your work, Semrush earns its price.
What does OnPageSEO.ai do that Semrush doesn't?
Geo-grid local map-pack tracking — seeing your Google Maps rank plotted across your whole service area — and AI search visibility showing whether ChatGPT and Google AI Overviews cite you. Semrush has neither.
Can I try it without a credit card?
Yes. The free plan needs no card, and viewing your data is never metered — only how often you pull fresh data from our providers each month.
Try it against your own site
Connect a domain and compare the data yourself. No card required.
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