Over the last two months, NotebookLM has surpassed Perplexity in total visits.

Google's experimental AI tool, NotebookLM, has achieved a significant milestone by overtaking Perplexity AI in total monthly web visits, according to recent traffic data. This marks a notable shift in the competitive landscape of AI-powered productivity and research tools. NotebookLM, which launched as Project Tailwind in 2023, is designed as a "virtual research assistant" that can summarize, analyze, and answer questions based on a user's own uploaded documents, using a technique called RAG (retrieval-augmented generation). Its core value proposition is creating a personalized AI that grounds its responses in the user's specific source material, reducing hallucinations.

This traffic surge suggests a growing user preference for AI tools that facilitate deep, contextual work over those optimized for broad web search. While Perplexity AI has gained popularity as a conversational search engine that cites sources, NotebookLM's rise indicates a demand for AI that can synthesize private or specialized information. The increase likely reflects Google's continued iteration on the product, including recent agent-like features that can organize notes and suggest questions. The trend highlights a maturing market where users are selecting AI tools based on specific workflows—research, writing, and analysis—rather than seeking a single, general-purpose answer engine.