Ahrefs vs SpyFu Comparison 2026
Ahrefs is the broad suite: backlink index, Content Gap and site audits from $129 a month, priced for a business with no trial and no discount ever. SpyFu answers one question cheaply instead: what has a competitor ranked for and paid for, with more than a decade of history, from $39 a month for Basic. Its own editorial note is direct about the trade: pair SpyFu with a free rank tracker rather than treating it as a replacement for a full platform like Ahrefs.
Backlink and keyword data at full depth
Every keyword a competitor has bought or ranked for
At a glance
- SpyFu starts cheaper, at $39.
- Only Ahrefs has a free tier.
Side by side
Ahrefs | SpyFu | |
|---|---|---|
| Starting price (they differ) | From $129 | From $39 |
| Pricing model (they differ) | Free plan, paid tiers | Paid subscription |
| Free tier (they differ) | Yes | No |
| Billing | Monthly or annual | Monthly or annual |
| Free trial | Not stated | Not stated |
| API | Yes |
Ahrefs
Backlink and keyword data at full depth
Ahrefs runs its own crawler, which is why its backlink index is the one other tools get compared against, and why the keyword data goes deeper than the free alternatives. Site Explorer and Content Gap are what most people open it for. It is priced for businesses rather than for individuals, and the company states outright that it never discounts.
Our note
Between this and Semrush the split is old but holds: Ahrefs for backlinks and content research, Semrush for advertising data and rank tracking breadth. Pick on which half of the job is yours, because paying for both is rarely worth it.
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
Why people weigh these two
- SpyFu instead of Ahrefs
- SpyFu specializes in a competitor's paid and organic keywords specifically, starting at $39, a narrower job than Ahrefs' full crawl.
- Ahrefs instead of SpyFu
- Ahrefs treats competitor keyword and ad history as one feature inside a much larger toolkit, with a free tier to test first, where SpyFu specializes in exactly that history.
Which one should you pick
Choose Ahrefs if the job is broad: backlink audits, content gaps and site health alongside competitor research, for $129 a month at Lite with no trial and no discount, ever. It is the full platform SpyFu's own listing says it is not trying to replace.
Choose SpyFu if the actual question is what a competitor is doing: which keywords it ranks for, which ads it runs and what it pays, going back more than a decade, for $39 a month at Basic with API access included at that price. It does not do site audits or backlink monitoring, so pair it with a free rank tracker for the rest rather than expecting one tool to cover both jobs.
Common questions
- Can SpyFu replace Ahrefs entirely?
- No, and its own editorial note says so directly: pair SpyFu with a free rank tracker rather than treating it as a replacement for a full SEO platform. It answers one question, what a competitor ranks and bids on, not the broader research Ahrefs covers.
- Which one is cheaper for competitor research specifically?
- SpyFu, by a wide margin. Basic is $39 a month with API access and a decade of ranking and ad history included, against Ahrefs' $129-a-month Lite plan, which covers competitor research alongside a much broader toolset.
- Does SpyFu do site audits or backlink monitoring?
- No. Its own listing states plainly that anybody needing site audits and backlink monitoring is using the wrong tool. Those live in Ahrefs, through Site Audit and Site Explorer.
- How far back does SpyFu's history go?
- More than a decade, covering which keywords a domain ranked for and which ads it ran. That historical depth is SpyFu's specific focus, and it is the reason to pick it for competitor research over a broader suite.
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.