Claude Is The Fastest Growing AI Traffic Source, According To New Data
Claude sent four times more referral traffic to websites in April than in January, according to new SE Ranking data.
That made it the fastest-growing AI traffic source among the five tracking platforms. It’s still the smallest by a wide margin, and it’s probably not a line that makes sense in your calculations yet.
To be clear, SE Ranking sells AI visibility tracking tools. The statistics come from its Google Analytics dataset.
What the Data Shows
Claude’s share of traffic in the SE Ranking dataset grew from 0.0029% in January to 0.0141% in April, a 386% increase.
Most of that came in March, when Claude’s share went from 0.0049% to 0.0127%. SE Ranking says that’s the biggest one-month jump in Claude’s history in its dataset.
AI platforms combined accounted for 0.33% of traffic as of April, up from 0.1976% a year ago. Within that, ChatGPT generated 78.23% of AI-directed traffic over a full 16-month period. Confusion follows at 9.33%, Gemini at 6.85%, and Copilot at 3.57%. Claude makes 1.40%.
Between January and April, ChatGPT’s referral traffic grew by 1.53% while Gemini grew by 63%. The same dataset showed Gemini surpassing Perplexity earlier this year.
How the SE Ranking Explains the March Jump
The SE level links March’s rise in public attention to Anthropic in February. Anthropic has publicly stated that it will not allow Claude to be used for mass surveillance of Americans or fully autonomous weapons. The statement came amid a dispute with the Pentagon over the limits on Claude’s use.
The report points to external figures moving in the same direction. It cites the same web data showing that Claude reached 11.3 million daily active users on mobile in early March. Ramp’s AI Index, based on enterprise spending data, reported Anthropic adoption in 34.4% of businesses in its data, compared to 32.3% for OpenAI.
The report does not mention OpenClaw
One thing missing from the SE Ranking analysis is OpenClaw, an open source framework that runs on Claude models.
OpenClaw was one of the biggest Claude-related stories of the same window. It was launched in November and hit 247,000 GitHub stars in early March. Observers have called it the fastest-growing project in GitHub’s history. Anthropic’s limited subscription access to third-party harnesses, starting with OpenClaw, on April 4th.
That’s more context than an explanation of referral numbers. Agent activity is not visible as clicks from claude.ai to websites, so OpenClaw usage would not register in this dataset. Another type of Claude’s work that can’t be seen is referral reports.
The US Is Close to Ten Months Ahead
The growth pattern looks similar for all regions in the dataset, but the US leads in both scale and time.
In April, Claude accounted for 0.0186% of US website traffic in the dataset. The EU figure was 0.0100%, and the UK was at 0.0054%.
US websites reached Claude’s traffic share of 0.0022% in April 2025. Other regions did not reach the same level until early 2026, about ten months later.
Why This Matters
A percentage increase makes the growth appear larger than the traffic behind it. An increase of close to 4x still leaves Claude with a small portion of referral traffic. The numbers act as the first signal to watch, not something to react to right now.
SE Ranking notes that its data only captures direct clicks from AI platforms, and that Claude is primarily used for writing, coding, and analysis, not for searching.
Looking Forward
The next monthly review will show whether Claude March’s jump was a new base or a spike. If it does, sites with a US audience will likely feel any change first. The positions have already shifted this year, with Gemini surpassing Perplexity in the same dataset.
Featured Image: Blossom Stock Studio/Shutterstock
