Ahrefs vs SpyFu
A source-aware comparison of pricing, documented capabilities and workflow fit.
Short answer
- Price: Ahrefs is cheaper — $29/mo vs $39/mo.
- How to start: Ahrefs is from $29/mo, SpyFu is from $39/mo billed monthly.
- Where they differ: only Ahrefs has sso (saml); both offer public api.
These lines are generated from the pricing we track, not from a paid placement. How we score tools.
What Ahrefs is
What Ahrefs isAhrefs is widely considered the gold standard among professional SEOs, boasting the world's second most active web crawler after Google. Its backlink index is among the largest in the industry, which is what most teams buy it for. It can analyze why a competitor is outranking you in seconds and provide a clear roadmap for your own growth. From content marketing to keyword research, every feature is designed to help you make data-backed decisions. It is known for providing some of the most accurate search volume data available outside of Google itself.
What SpyFu is
What SpyFu isSpyFu shows which keywords competitors bid on and rank for, with historical data going back years. That archive is the reason to use it: rather than a snapshot of today's rankings, you can see how long a competitor has defended a term, which ad copy they kept running, and which campaigns they abandoned. Coverage is strongest for the US market and thinner elsewhere, and the data is modelled rather than taken from ad accounts, so treat the figures as direction rather than measurement.
Who it is for: marketers running Google Ads or doing competitive SEO research who want to know what a competitor has bid on and ranked for over years, not just this month. The historical archive is the product. It is useful for spotting which keywords a rival keeps paying for, because a keyword bought continuously for three years is almost certainly profitable.
Where it falls short: data coverage is strongest for the US and UK; in smaller markets the keyword database thins out and estimates get rough. The site audit and backlink tooling exist but are not the reason to choose SpyFu over Semrush or Ahrefs, both of which have broader datasets and larger budgets. Treat volume and cost-per-click figures as directional, not exact. For a PPC team that needs competitor ad history at a mid-range subscription price, SpyFu remains one of the few tools that specialise in it.
Side by side
| Ahrefs | SpyFu | |
|---|---|---|
| Category | Marketing | Marketing |
| How to start | $29/moverified | $39/moverified |
| Public API | Yes | Yes |
| Mobile app | No | No |
| Open source / self-hostable | No | No |
| SSO (SAML) | Yes | No |
| Visit | Ahrefs ↗ | SpyFu ↗ |
Some links on this page earn us a commission if you sign up. It never changes a price you pay, a verdict we publish, or the order tools appear in.
What Ahrefs is built to do
- Site Explorer
- Deep dive into the organic traffic and backlink profile of any website on the internet.
- Keywords Explorer
- Analyze difficulty and traffic potential across a massive 7-billion keyword pool.
- Site Audit
- Automatically scan your site for SEO issues and learn how to fix them.
- Rank Tracker
- Daily monitoring of your keyword positions on both desktop and mobile devices.
What SpyFu is built to do
- Competitor keyword history
- Years of ranking and bidding history for a domain, not just the current position.
- Ad copy archive
- Every paid advert a competitor has run, which shows the messages they kept and dropped.
- Keyword gap analysis
- Terms competitors rank for and you do not, ranked by opportunity.
- Unlimited searches
- Plans are not metered per lookup, which suits exploratory research.
Choose Ahrefs if
- Solo SEOs on Starter at $29/month, or Lite at $129/month for 5 projects and 750 tracked keywords
- Agencies on Standard at $249/month: 20 projects, 2,000 keywords, 500,000 crawl credits, 2 years of history
- In-house teams on Advanced at $449/month with 50 projects and 5 years of historical data
Skip Ahrefs if
- You need several seats — every plan includes 1 user and extra seats cost $40 to $80/month each
- You want uncapped API access; that starts at Enterprise, $1,499/month with an annual commitment
- You track more than 750 keywords but only have Lite budget — keyword caps are per plan, not add-ons
Choose SpyFu if
- Competitor keyword and ad research where the Pro tier's uncapped search results and exports matter
- Trying a paid SEO tool with a 30-day money-back guarantee instead of a free trial
- Agencies tracking many domains — the top tier allows unlimited projects and 50k tracked keywords
Skip SpyFu if
- You want a free tier — SpyFu has none; the entry plan is $39/month, or $29/month billed annually
- The Basic caps are too tight for you: 10k search results, 10k export rows, 1 tracking project and 5k tracked keywords
- Your market is outside the US, where data accuracy varies and coverage is weaker
Evidence and freshness
Where a claim on this page comes from a vendor page, it is linked here.
Ahrefs: pros & cons
- Best Backlink Database: Absolutely essential for any serious link-building strategy.
- Content Gap Tool: Find the keywords your competitors rank for but you don't.
- Accurate Volumes: Clickstream data ensures the most realistic traffic estimates.
- Clean UI: Presents complex technical data through highly understandable charts.
- Credit System: Per-action credit deductions can increase the total cost of usage.
- Technical Audit: Site audit features may not be as deep as those in SEMrush.
- No Social Media Tools: Focused strictly on SEO, with no social media monitoring.
SpyFu: pros & cons
- Deep historical ad and keyword data
- Inexpensive relative to rivals
- Useful competitor ad history
- Data accuracy varies by market
- Interface feels dated
- Weaker outside the US
Our verdict on Ahrefs
The most reliable tool in the market for backlink research and organic growth strategy.
Our verdict on SpyFu
Good value for competitor research. Verify anything important against your own data.
Published plans, side by side
Every figure below was read from the vendor's own pricing page and is shown with the sentence it came from. Where a vendor publishes no plan prices, we say so rather than guess.
Ahrefs
- Starter$29/mo
Starter $29/month; Ahrefs Free available
- Lite$129/user/mo
Lite $129/month: 5 projects, 1 user (+2 at $40/mo), 750 tracked keywords, 100,000 crawl credits, 6 months history
- Standard$249/user/mo
Standard $249/month: 20 projects, 1 user (+5 at $60/mo), 2,000 keywords, 500,000 crawl credits, 2 years history
- Advanced$449/mo
Advanced $449/month: 50 projects, 1 user (+10 at $80/mo), 5,000 keywords, 1,500,000 crawl credits, 5 years history
- Enterprise$1,499/mo billed annually
Enterprise $1,499/month with annual commitment: uncapped API access
SpyFu
- Basic$39/mo billed monthly
Basic $39/mo monthly or $29/mo annual
- Pro$119/mo billed monthly
Pro $119/mo monthly or $89/mo annual
- Team$249/mo billed monthly
Team $249/mo monthly or $187/mo annual
Ahrefs vs SpyFu: common questions
- Is Ahrefs cheaper than SpyFu?
- Ahrefs is the cheaper entry point at $29/mo, against $39/mo billed monthly for SpyFu. Both figures come from the vendors' own pricing pages.
- Does Ahrefs or SpyFu have a free plan?
- We have not verified a free plan for Ahrefs, while SpyFu has no free plan listed.
- Which is cheaper once you start paying, Ahrefs or SpyFu?
- Ahrefs has the cheaper first paid step: Starter at $29/mo, against Basic at $39/mo billed monthly for SpyFu. Both figures come from the vendors' own pricing pages.
- What is the difference between Ahrefs and SpyFu?
- On the criteria we check, only Ahrefs has sso (saml); both offer public api. The table above lists every criterion side by side.