Ahrefs remains a cornerstone in SEO research and strategy, offering deep insights into web content and search performance. Its data powers decision-making across digital marketing and competitive analysis, from content creators refining keyword strategy to enterprises optimizing backlink outreach. Explore the figures below to grasp how Ahrefs shapes SEO.

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Ahrefs generated $149.1 million in annual revenue by 2024.
As of March 2025, Ahrefs reports over 27.2 trillion internal backlinks indexed, a 112.5% increase since 2017, according to internal estimates
Indexed domains climbed to 267.6 million by March 2025, a 24.87 % boost from late 2024.
Pages indexed reached 456.5 billion, up 12.94 % since early 2025.
External backlinks soared from 3.3 trillion in 2022 to 35 trillion in 2025, a 960.61 % increase.
Ahrefs’ keyword database grew from 20.8B in 2024 to 28.7B by March 2025, a 38% increase according to tracking data shared by the company.
Ahrefs supports 13 languages as of March 2025.

Recent Developments

Ahrefs’ infrastructure comprises 3,600 servers with 691K CPU cores, 4PB of RAM, and nearly 500PB of SSD, as detailed in their public updates.
It crawls approximately 10 million new pages daily, up 233.33 % from 2022’s 3 million.
It updates metrics for 300 million pages every 24 hours, a 25 % rise over 2022.
Ahrefs’ custom-built “Yep1” supercomputer processes SEO data at 23.32 petaflops, reportedly placing it among the top 50 globally.
AhrefsBot ranks as the most active SEO crawler on Cloudflare Radar and the second most active crawler globally.

How Many Pages Are Created/Assisted with AI

25.8% of web pages are created by pure human effort with no AI involvement.
Only 2.5% of pages are generated entirely by pure AI.
9.87% of pages show minimal AI use (1–10%).
46.36% of pages rely on substantial AI use (11–70%).
15.51% of pages are built with dominant AI use (71–99%).
In total, 71.7% of web pages are now created through a Human + AI collaboration.

User Growth Statistics

Ahrefs reached US$149.1 million in annual revenue by 2024, growing from approximately US$1 million in 2011.
Startup users (0–9 employees) make up 40.99 % of the customer base as of March 2025.
Companies with 20–49 employees account for 24.60 %.
In March 2025, U.S.-based users made up about 60% (23,695) of Ahrefs’ customer base, according to internal user distribution data.
Ahrefs added 20,113 new users in a single week during April 2025, based on signup statistics cited in marketing disclosures.

Database Size Statistics

Ahrefs has indexed 456.5 billion pages as of March 2025, a 12.94% rise since early 2025, based on infrastructure metrics.
It indexes 267.6 million domains, up 24.87 % from late 2024.
Its keyword database covers 28.7 billion keywords, up 37.98 % from 20.8 billion in 2024.
The U.S. keyword database alone holds 2 billion keywords.
Ahrefs covers 226–217 regions, the most among SEO tools.

Prevalence of SERP Features

Related Searches appear most often, showing up in 85.15% of results.
Reviews are present in 79.12% of SERPs, making them a highly influential feature.
Videos are found in 78.38% of search results, highlighting the importance of multimedia.
People Also Ask sections appear in 64.24% of SERPs.
Image Blocks show up in 45.39% of search results.
Standalone Images are included in 35.49% of SERPs.
Shopping Results are visible in 15.19% of queries.
Discussions and Forums appear in 14.39% of SERPs, reflecting user-generated content.
Featured Snippets are found in 10.47% of results.
The Knowledge Graph has minimal representation compared to other SERP features.

Backlink Index Statistics

Internal backlinks rose to 27.2 trillion as of March 2025, a 112.5 % increase since 2017.
From 2022 to 2025, Ahrefs’ external backlink index expanded from 3.3 trillion to 35 trillion, a reported 960%+ increase in scope.

Keyword Index Statistics

The total keyword database expanded to 28.7 billion keywords in March 2025, up 37.98 % from the previous year.
That figure represents just 26.09 % of the total 110 billion keywords Ahrefs holds, the filtered, actionable subset.
The U.S. holds 2.2 billion of these keywords.

Site Audit Statistics

Ahrefs’ Site Audit tool scans over 170 SEO issues, covering everything from duplicate content to Core Web Vitals and structured data.
It handles more pages per project, between 25K and 250K, versus Semrush’s 20K–100K.
Always-on audits and IndexNow integration enable faster detection and resolution of technical issues.
New in April 2025, Ahrefs launched real‑time Site Audit reporting with continuous crawls for near-immediate issue detection.
Missed issues are minimized thanks to live SEO fixes, allowing corrections to be made directly in the dashboard.
Site Audit classifies issues into errors, warnings, and notices, with clear visual prioritization.
It includes JavaScript rendering in all plans, unlike some competitors that restrict this to higher tiers.
Ahrefs’ real-time reporting ensures a faster feedback loop for technical SEO improvements.

How Long Does SEO Take?

11% of respondents said SEO results take 1–2 months.
The majority, 58%, reported it takes 3–6 months to see results.
19% noted that SEO progress shows in 7–12 months.
12% indicated it may take over 12 months to achieve meaningful outcomes.

Traffic Analysis Statistics

Ahrefs.com saw approximately 25.3 million site visits in May 2025.
Earlier data, traffic rose from 11.9 million in February to 12.3 million in March, before dipping to 10.4 million in April.
On average, Ahrefs sustains a steady mid‑month traffic of around 2.27 million weekly visits, outperforming Semrush.
U.S. visitors account for roughly 18.77% of Ahrefs.com’s total traffic, per third-party analytics tools like Similarweb, reflecting an 11% recent decline.
Ahrefs consistently beats Semrush on traffic steadiness and weekly engagement.
Its persistent domain coverage and backlink depth likely fuel this performance.

Content Explorer Statistics

Ahrefs’ Content Explorer remains a go-to for content discovery across multiple domains.
Users can search topics and filter by traffic, backlinks, and referring domains.
It supports analysis of new content trends and competitive performance.
Deep filtering enables drilling down by content type, domain rating, or publication date.
Features help identify high-traffic content and emerging thematic gaps.
Its integration with other Ahrefs tools, Keyword Explorer, and Site Explorer, boosts research workflows.
Many marketers rely on it to pinpoint “evergreen” or trending articles to inform their content strategy.

Rank Tracking Statistics

In April 2025, Ahrefs unveiled Rank Tracker 2.0, a rebuilt backend for faster, more stable performance.
It now supports bulk editing, allowing users to add, delete, or filter hundreds of keywords at once.
You can now compare SERP overviews over time and use the “Identify intents” feature to spot shifts in search intent.
The revamped interface streamlines rank monitoring with real-time updates and greater flexibility.
Rank Tracker continues integration with other Ahrefs tools, maintaining a unified dashboard experience.
These enhancements make tracking SEO outcomes both faster and more strategic.

Crawler Statistics

AhrefsBot scans over 8 billion pages every 24 hours, ranking top among SEO crawlers.
It refreshes its index every 15–30 minutes, ensuring freshness and relevance.
Ahrefs operates extensive infrastructure, 3,600 servers, 694K CPU cores, 4 PB RAM, 32 PB HDD, and 505 PB SSD storage.
Between 2022 and 2025, server count increased by 68.93%, up from 2,131 to 3,600 units.
The crawler’s capacity supports both deep web coverage and rapid updates.
Its scale underpins the massive indices Ahrefs maintains.

API Usage Statistics

Ahrefs offers APIs for data retrieval across metrics, backlinks, keyword volume, rankings, and site audits.
Many agencies integrate the Ahrefs API into dashboards or BI tools for automated reporting.
API clients benefit from flexible access to Site Explorer, Rank Tracker, and Content Explorer data.
High-end plans include generous API call limits to support bulk data processing.
API access spans across multiple tools within Ahrefs’ ecosystem.

Most Searched Keywords

The Ahrefs keyword index grew to 28.7 billion filtered keywords in 2025, only 26.09% of the full 110 billion.
Key sources span 217 global locations and 10 search engines, including YouTube, Amazon, Bing, and Baidu.
The U.S. alone holds approximately 2.2 billion of those keywords.
Though granular “most searched” lists aren’t public, Ahrefs’ Keyword Explorer allows identification of top-volume keywords.
The filtered index focuses on actionable, high‑value terms, making it ideal for SEO planning.

Competitive Analysis Statistics

As of March 2025, Ahrefs had a 22.94% market share in SEO/SEM platforms, per third-party SaaS market data.
Its customer base numbered 49,085 domains/customers, versus 118,406 for Google Ads.
Ahrefs aids in identifying content gaps via its Content Gap feature.
The Rank Tracker Competitors Overview includes Share of Voice, traffic trends, and SERP feature visibility.
Tools like Best Links Report, Backlink Calendar, Lost Links Report, and DR/UR filters aid competitive analysis.
A recent industry survey found 59.1% of SEO pros ranked Ahrefs as their preferred all-in-one tool, though sample size and source specifics were not published.
68.1% of users rated Ahrefs the most accurate and comprehensive provider of backlink data.

Organic Search Statistics

Ahrefs’ organic search traffic index includes ~590 million keywords, of which 9.46% (≈55.8 million) generate AI Overviews.
As of June 15, 2025, 12.8% of all search volume, ≈23 billion queries, is covered by AIOs.
In the U.S., ~16% of keywords (24.9 million of 156 million) trigger AI Overviews.
In July 2025, traffic to Ahrefs.com rose 13% month-over-month to reach 24.1M visits.
Paid search traffic for Ahrefs totaled 40.32K visits in July 2025, a 16% month-over-month decline per digital ad analytics.
Ahrefs’ main sources of onsite traffic are Direct (73.4%) and Google.com (17.7%).
Its Authority Score stands at 77, with 4.54 million backlinks and 120.18K referring domains.

Paid Search Statistics

As of July 2025, Ahrefs derived 40.32K visits from paid search, a drop of 16% month-over-month.
Ahrefs’ strength remains in organic search and backlink depth, not in paid advertising traction.

Geographic Coverage Statistics

In July 2025, U.S. users made up 17.05% (≈4.11M) of Ahrefs site visitors, followed by India (16.67%) and Indonesia (6.32%).
Featured tools like Site Explorer provide traffic data for any country, spanning 171+ countries.

Conclusion

Ahrefs stands out as a leading SEO platform, backed by robust infrastructure, massive data coverage, and high user trust. Its unmatched backlink index, expansive keyword database, and insights into AI-generated search signals, like AIOs and Brand Radar, provide strategic visibility that few tools match. Whether you’re monitoring competitive landscapes, analyzing organic trends, or shaping AI-aware SEO strategies, Ahrefs delivers clarity and depth. Explore these stats and see how your strategies can leverage Ahrefs’ current footing in the SEO landscape.