Ahrefs and SpyFu: side-by-side
A side-by-side comparison of Ahrefs and SpyFu — features, pricing, strengths, and where each tool falls short.
Ahrefs and SpyFu are both competitor research tools, but they are aimed at meaningfully different practitioners. Ahrefs is a full-stack SEO suite whose backlink index and 24-billion-keyword database attract agencies doing deep link prospecting and competitive analysis across dozens of domains. SpyFu is a competitive intelligence platform built around 18-plus years of PPC and organic ranking history — its core value proposition is showing you exactly what your competitors have spent on Google Ads and which keywords have kept them in the SERPs across nearly two decades.
The price gap between them is substantial and worth naming upfront. Ahrefs' entry plan costs $129 per month and covers 5 projects with 750 tracked keywords. SpyFu's Basic plan starts at $29 per month — less than a quarter of the price — though it imposes 10,000-row caps on search results and exports, and limits you to one live site tracking project. Upgrading to SpyFu's Pro + AI plan to remove those caps costs $79 per month, still well below Ahrefs Lite. Neither tool offers a free subscription tier.
The realistic buyer choosing between these two is a marketer or agency that does heavy competitor research and is trying to decide whether PPC intelligence and long historical archives (SpyFu's strengths) matter more than a superior backlink index and broader technical SEO toolset (Ahrefs' strengths). A pure link-builder will find SpyFu's backlink data comparatively thin. A PPC practitioner reverse-engineering a competitor's Google Ads history will find almost nothing equivalent inside Ahrefs.
What each tool is
Ahrefs
Ahrefs is an all-in-one SEO platform built around a massive proprietary backlink index and keyword database. It offers Site Explorer (competitor analysis), Keywords Explorer, Site Audit, Rank Tracker, and Content Explorer. It is widely used by agencies and in-house teams for competitive research and link building.
SpyFu
SpyFu is a competitive intelligence tool focused on Google Ads (PPC) and organic search (SEO) research. It allows users to search any domain and download the keywords they have ever bought on Google, the ads they have run, and the organic keywords they rank for. The platform also includes rank tracking, backlink research, keyword grouping tools, a ChatGPT integration, and an AI content improvement product called RivalFlow. SpyFu is sold as a self-serve SaaS product with monthly and annual plans targeting marketers, agencies, and PPC practitioners.
At a glance
Ahrefs
Full-stack SEO Suite
A full-stack SEO suite best known for its backlink index and keyword database.
Ahrefs Lite
- •5 projects, 750 tracked keywords
- •500,000 crawl credits/month
- •No native GSC-driven workflows like quick wins or decay
- •AI features gated to higher tiers
SpyFu
Competitive Intelligence
A competitor keyword research platform best known for exposing rivals' PPC and SEO strategies using 18+ years of historical search data.
Basic
- •10,000 row limit on search results and data exports; 1 live site tracking project
- •Pro + AI plan unlocks unlimited search results, exports, and 15k tracked keywords; 1 user included, $30/additional
- •Team/Agency plan adds 5 included users, 50k tracked keywords, unlimited tracking projects, and RivalFlow for 5 sites
- •Annual billing saves 25% (effectively 3 months free) across all plans
- •18+ years of historical data available on all plans
Feature comparison
Side-by-side feature breakdown across pricing, data, workflows, and collaboration.
| Feature | Ahrefs | SpyFu |
|---|---|---|
| Data & coverage | ||
| Native Google Search Console integration | No | Partial |
| Keyword research database | 24B+ keywords (proprietary) | 13.1B keywords |
| Backlink index | Yes | Yes |
| SERP feature tracking | Yes | Yes |
| Workflows built for you | ||
| Quick wins (pages 1 click from page 1) | No | No |
| Content decay detection | Manual via Site Explorer | No |
| Weak & dead URL identification | No | No |
| AI content briefs | Add-on (AI Content Helper) | Partial |
| Content groups & cohort analysis | No | — |
| Collaboration & sharing | ||
| Magic-link read-only sharing | No | No |
| Multi-property dashboards | Yes | Yes |
| Seats included on entry plan | 1 user | 1 user |
| Pricing & value | ||
| Entry plan price | $129/mo | $29/mo |
| Free tier | No | No |
| BYOK (bring your own DataForSEO key) | No | — |
| Competitive intelligence | ||
| Paid search (PPC) competitor data | — | Yes |
| Traffic estimates for any domain | — | Yes |
| Audience demographics | — | Not publicly documented |
| Historical data depth | — | 18+ years |
The differences that actually matter
Price: $29 vs. $129 at entry
SpyFu's Basic plan at $29 per month is the most immediate differentiator. Ahrefs Lite at $129 per month costs 4.4 times more before you touch a single feature. SpyFu's Basic plan does impose 10,000-row caps on all results and exports, and limits you to one live tracking project, so power users will likely need the Pro + AI plan at $79 per month — still 38% cheaper than Ahrefs Lite. Annual billing on SpyFu saves approximately 25% across all tiers.
PPC competitive intelligence: SpyFu's exclusive territory
SpyFu was built specifically to expose competitor Google Ads strategies. You can pull any domain's PPC keyword history, view ad copy variants they have run, see estimated ad spend, and get negative keyword recommendations — across 18-plus years of data. Ahrefs has no equivalent PPC intelligence layer. If paid search research is part of your regular workflow, SpyFu wins this dimension outright; Ahrefs simply does not compete in it.
Backlink research: Ahrefs is materially stronger
Ahrefs built its reputation on backlinks, and the gap is real. Its index is the largest third-party backlink database publicly documented, and the associated workflows — competitor link gap analysis, link intersect, broken link identification — are mature and deeply integrated. SpyFu does include backlink research, but it is a supporting feature rather than a core one, and the 10,000-row cap on the Basic plan limits how much data you can pull in a single session.
Historical data depth: 18-plus years vs. Ahrefs' shorter window
SpyFu explicitly documents 18-plus years of historical keyword and ad data, which lets you track how competitors' organic rankings and paid strategies have evolved over nearly two decades. This is genuinely valuable for understanding keyword trend durability and competitor longevity. Ahrefs provides historical rank tracking and SERP snapshots, but its historical archive depth is not documented at the same scale. For long-range historical competitive analysis, SpyFu has a structural advantage.
Keyword database and SEO breadth
Ahrefs indexes 24 billion-plus keywords against SpyFu's 13.1 billion — nearly twice the coverage. Beyond keyword counts, Ahrefs adds a full technical site audit tool, SERP feature tracking, content explorer, and rank tracking for up to 750 keywords on the entry plan. SpyFu's rank tracker on its Pro + AI plan handles up to 15,000 tracked keywords, which is significantly more headroom, but the surrounding SEO toolset is narrower. For pure SEO breadth, Ahrefs is the more complete platform.
Where each tool wins and falls short
Ahrefs
Strengths
- Largest third-party backlink index in the industry
- Mature competitor research workflows
- Strong brand and educational content
Weaknesses
- Expensive — entry plan starts at $129/mo with low row caps
- Data is third-party estimated, not your real Google Search Console truth
- No native AI content briefs grounded in your performance data
- Steep learning curve for non-SEO specialists
SpyFu
Strengths
- 18+ years of historical PPC and organic ranking data — one of the deepest archives publicly documented
- Extensive PPC competitor intelligence including ad copy history, keyword spend estimates, and negative keyword recommendations
- 13.1 billion keywords and 152 million websites indexed, with 7.2 trillion search results
- RivalFlow AI tool identifies content gaps relative to competitors and suggests page-level improvements
Weaknesses
- Basic plan imposes 10,000-row caps on all search results and exports, limiting utility for high-volume research
- GSC integration is documented only within the RivalFlow AI feature, not as a core platform-wide data source
- Traffic and keyword data are third-party estimates, not first-party verified figures
- Audience demographics data is not publicly documented in the scraped sources
Who each tool fits
Ahrefs
Best for
- •Agencies running deep competitor backlink analysis
- •Teams that prioritize off-page SEO and link building
- •Researching keywords across many domains you do not own
Not ideal for
- •Teams whose primary signal is their own Google Search Console data
- •Smaller sites priced out of the $129+/mo entry tier
- •Founders who want actionable next steps, not just raw data
SpyFu
Best for
- •PPC practitioners who want to reverse-engineer competitors' Google Ads keyword and ad copy history
- •SEO teams needing competitor organic keyword data and backlink gap analysis
- •Agencies that require white-labeled reporting and multi-domain competitive research
Not ideal for
- •Teams whose primary workflow is built around their own Google Search Console data — GSC integration is available only on higher-tier RivalFlow features
- •Sites that need a deep technical site audit or crawl-based SEO workflow
- •Users on the Basic plan who need unlimited data exports — row caps apply at that tier
Which should you choose?
Ahrefs is the stronger platform for agencies and SEO teams whose work centers on backlink analysis, keyword research at scale, and competitor organic strategy — provided the $129/month entry price is justified. SpyFu is the clearer choice for PPC practitioners and budget-conscious teams who need 18-plus years of competitive ad and keyword history without paying four times the price.
Choose Ahrefs if…
- Your workflow is built around backlink gap analysis and link prospecting across many competitor domains — Ahrefs' index is the largest available.
- You need keyword research at genuine scale — 24 billion keywords versus SpyFu's 13.1 billion — and want breadth across international markets.
- Your team relies on mature technical SEO workflows including site audits, rank tracking across 750+ keywords, and SERP feature monitoring.
- You manage multiple client properties and need multi-project dashboards with established reporting infrastructure that your team already knows.
Choose SpyFu if…
- You run or audit Google Ads campaigns and need to see a competitor's historical PPC keywords, ad copy, estimated spend, and negative keyword signals — this is SpyFu's core specialty with no real Ahrefs equivalent.
- Your budget is $29–$79 per month and you need credible competitor organic and paid keyword data without committing to Ahrefs' $129/month entry point.
- You want access to 18-plus years of historical search data to identify keyword trends and competitor longevity — SpyFu's archive depth is exceptional.
- You are on an agency plan and need white-labeled reporting, unlimited tracking projects, and team seats included without per-seat costs eating into margins.
Frequently asked questions
What buyers ask when weighing Ahrefs and SpyFu.
Yes, materially so. SpyFu's entry plan is $29 per month versus Ahrefs Lite at $129 per month. Even SpyFu's mid-tier Pro + AI plan at $79 per month is 38% cheaper than Ahrefs' cheapest option. The tradeoff is that SpyFu's Basic plan caps search results and exports at 10,000 rows, and Ahrefs Lite provides 500,000 crawl credits per month with a broader technical SEO toolkit.
No. PPC competitive intelligence — competitor ad copy history, Google Ads keyword spend estimates, and negative keyword recommendations — is one of SpyFu's defining features and is not replicated inside Ahrefs. If reverse-engineering a competitor's paid search strategy is part of your work, SpyFu is the right tool for that job.
Ahrefs. Its backlink index is the largest third-party database in the industry, and backlink workflows — link gap analysis, link intersect, broken link outreach — are central to the platform. SpyFu includes backlink research but it is a secondary capability, and the Basic plan's 10,000-row limit restricts how much backlink data you can export at once.
Neither offers a true platform-wide GSC integration. SpyFu connects to GSC within its RivalFlow AI content tool, available on Pro + AI and Team/Agency plans, but this is not a core data layer for the main competitive research features. Ahrefs allows GSC import but similarly does not build its primary workflows around your real GSC data.
SpyFu explicitly documents 18-plus years of historical PPC and organic keyword data, available on all plans. This lets you see how a competitor's ad strategy and organic rankings have evolved over nearly two decades. Ahrefs provides historical rank tracking and SERP data, but does not publicly document an equivalent multi-decade archive. For deep historical competitive research, SpyFu's dataset is notably older.
It depends on the agency's focus. Ahrefs supports multi-property dashboards and is built for teams doing deep SEO and backlink work across client portfolios at $129/month with 1 user on the entry plan. SpyFu's Team/Agency plan includes 5 users, unlimited tracking projects, 50,000 tracked keywords, and white-labeled reporting — potentially stronger value for agencies primarily doing competitive intelligence or PPC research.
Neither offers a free subscription tier. SpyFu provides free keyword and domain preview results on its public site without an account, and offers a 30-day money-back guarantee on paid plans. Ahrefs has no free tier and no documented money-back guarantee on its standard plans. Both require a paid commitment to access full data.
Ahrefs is larger: 24 billion-plus keywords versus SpyFu's 13.1 billion. That gap matters most for international keyword research and niche query coverage. For core English-language competitive research, SpyFu's 13.1 billion keywords combined with 152 million indexed domains and 7.2 trillion search results provides substantial coverage, though Ahrefs' broader database gives it an edge for keyword discovery at the margins.