Semrush vs SpyFu Comparison 2026
Semrush is the full competitor-research and site-maintenance suite, position tracking, audits, keyword gaps, AI answer visibility, at $139 a month, or $117.33 billed annually. SpyFu answers a narrower question, what has a competitor ranked for and paid for, going back more than a decade, for $39 a month, or about $29 with three months free on annual billing, and it says plainly that site audits and backlink monitoring are the wrong job for it. Semrush replaces a full SEO platform. SpyFu is a cheap specialist for one question, best paired with a free rank tracker rather than trusted to do everything.
Keyword and competitor research at agency depth
Every keyword a competitor has bought or ranked for
At a glance
- SpyFu starts cheaper, at $39.
- Neither has a free tier.
Side by side
Semrush | SpyFu | |
|---|---|---|
| Starting price (they differ) | From $139 | From $39 |
| Pricing model | Paid subscription | Paid subscription |
| Free tier | No | No |
| Billing | Monthly or annual | Monthly or annual |
| Free trial | Not stated | Not stated |
| API | Not stated | Yes |
| Data export |
Semrush
Keyword and competitor research at agency depth
Semrush is the tool an SEO reaches for when they need to know what a competitor ranks for and what it is worth. Position tracking, site audits and keyword gaps are all there, along with newer reporting on how brands surface in AI answers. It costs more than most creators can justify, and the entry plan tracks five sites and 500 keywords.
SpyFu
Every keyword a competitor has bought or ranked for
SpyFu is built around one question: what is the other site doing. It keeps more than a decade of history on which keywords a domain ranked for, which ads it ran and what it paid, which is the part the general SEO suites treat as a side feature. For research on a competitor rather than maintenance on your own site, it is the cheaper specialist.
Our note
SpyFu is the cheap way to answer one question well: what is the competition ranking and bidding on. Pair it with a free rank tracker rather than treating it as a replacement for a full SEO platform.
Why people weigh these two
- SpyFu instead of Semrush
- SpyFu narrows to exactly what a competitor has bought or ranked for, starting at $39 with no free tier, sharper for competitive research than for the wider audit and content suite Semrush sells.
- Semrush instead of SpyFu
- Semrush covers the same competitor keyword and ad research at agency depth, starting at $139, alongside site audits SpyFu's own guidance says to look elsewhere for.
Which one should you pick
Choose Semrush if the site itself needs maintaining as well as the competition researched: audits, position tracking for 500 keywords and keyword gap analysis are all in the $139-a-month entry plan. It costs more than three times SpyFu's rate, and is the most expensive tool in this catalog, which the depth and reputation are meant to justify against sites with real SEO teams.
Choose SpyFu if the only question is what a competitor is doing: $39 a month, or roughly $29 billed annually, buys more than a decade of their ranked keywords and ad spend, with API access included at that price. It is not a replacement for a full SEO platform, so pair it with a free rank tracker rather than expecting site audits from it, and buy Semrush instead if maintaining your own site is actually the job.
Common questions
- Which is cheaper, Semrush or SpyFu?
- SpyFu, by a wide margin: $39 a month, or about $29 billed annually, against Semrush's $139, or $117.33 annually. Semrush costs more than three times as much, for a much broader toolkit.
- Can SpyFu audit my own site the way Semrush can?
- No, it says so directly: anybody needing site audits and backlink monitoring is using the wrong tool. Semrush covers audits, backlink checks and position tracking on your own site alongside competitor research.
- How far back does SpyFu's competitor history go?
- More than a decade of which keywords a domain ranked for and which ads it ran and paid for. Semrush's competitor keyword research is more current and integrated with the rest of its suite rather than built as a historical archive.
- Does SpyFu include API access at its price?
- Yes, on the $39 Basic plan, which is unusual at that price point. Semrush's API access is not detailed the same way in its own materials, though its SEO plus AI Search tier adds MCP access for an assistant to query the data directly.
Ratings are the average of reviews readers left. The facts are stated by each tool’s own listing and are not verified by CloutStack. How we make money.