Semantic Retrieval vs. Traditional Search
Understanding the fundamental difference between semantic retrieval systems and traditional web crawlers: Exa operates as a semantic retrieval index over a pre-crawled corpus, focusing on high-quality, text-rich pages suitable for LLM context windows rather than real-time web crawling.
Modern Web Crawling Challenges
The evolving landscape of web access restrictions: Modern platforms like Reddit, Xueqiu, and others implement sophisticated barriers to automated crawling, fundamentally changing how AI systems can access and index web content.