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Vercel examines traffic from crawlers used by AI services. The article discusses observed crawling behavior and its implications for website operators.

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The rise of the AI crawler - Vercel

The article explores the emerging landscape of AI web crawlers, providing a detailed analysis of how different AI assistants like ChatGPT, Claude, and others crawl and interact with web content. Vercel and MERJ conducted an extensive study examining the crawling behaviors of various AI platforms, revealing significant insights into their web interaction patterns[1].

Key Findings

The research uncovered several critical observations about AI crawlers:

  • Crawler Scale: AI crawlers are generating substantial web traffic, with GPTBot generating 569 million requests and Claude 370 million requests across Vercel's network, representing about 28% of Googlebot's volume[1].
  • JavaScript Rendering Limitations: Most AI crawlers (OpenAI, Anthropic, Meta, ByteDance, Perplexity) do not render JavaScript, meaning they cannot process client-side rendered content[1].
  • Content Prioritization: Different AI crawlers show unique content fetching preferences:
    • ChatGPT prioritizes HTML content (57.70% of fetches)
    • Claude focuses heavily on images (35.17% of fetches)
    • Both spend significant time on JavaScript files despite not executing them[1]
  • Crawling Inefficiencies: AI crawlers demonstrate notable inefficiencies:
    • ChatGPT spends 34.82% of fetches on 404 pages
    • Claude shows similar 404 error rates at 34.16%
    • High rates of unnecessary redirects and failed page requests[1]

Implications and Recommendations

The study provides recommendations for:

  • Site owners wanting to be crawled (prioritize server-side rendering)
  • Site owners wanting to block AI crawlers
  • AI users (understanding potential content limitations)

The research ultimately highlights that while AI crawlers are rapidly scaling, they still face significant challenges in web content discovery and processing[1].

Significance

This analysis represents an important early exploration of how AI technologies interact with web content, offering unprecedented insights into the emerging AI crawling ecosystem.

Citations: [1] https://vercel.com/blog/the-rise-of-the-ai-crawler