Claude sent almost four times more referral traffic to websites in April than in January, per new SE Ranking data . That made it the fastest-growing AI traffic source among the five platforms tracked. It’s still the smallest by a wide margin, and it probably isn’t a meaningful line in your analytics yet. For transparency, SE Ranking sells AI visibility tracking tools. The figures come from its own Google Analytics dataset. What The Data Shows Claude’s share of traffic in SE Ranking’s 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 largest single-month jump in Claude’s history across its dataset. AI platforms combined accounted for 0.33% of traffic as of April, up from 0.1976% a year earlier. Within that, ChatGPT generated 78.23% of AI-referred traffic across the full 16-month period. Perplexity follows at 9.33%, Gemini at 6.85%, and Copilot at 3.57%. Claude accounts for 1.40%.…