What is PerplexityBot?
PerplexityBot is the crawler Perplexity uses to discover and index web pages so they can be retrieved and cited as sources in its AI-generated answers.
How it works
Perplexity is citation-first by design, surfacing the sources behind each answer, and PerplexityBot is what populates the index those citations are drawn from. Allowing it is the precondition for being cited there.
It also does not render JavaScript, so static, server-delivered HTML is what it can actually read. Perplexity reflects on-page updates quickly, which makes content freshness a more immediate lever there than on slower-moving engines.
PerplexityBot vs OAI-SearchBot
Both are AI search crawlers that feed citations, but for different engines and with different ranking logic. Perplexity weights real-time retrieval and freshness heavily; ChatGPT search leans on Bing's index. The robots.txt decision for each is the same: allow it if you want its citations.
Why it matters for B2B
Perplexity is a fast-growing surface for B2B research, and its visible citations make it a place where being a named source is especially valuable. PerplexityBot access is what makes that possible.
Blocking it unintentionally at the CDN or WAF layer. Aggressive bot-mitigation rules often catch PerplexityBot by default, quietly removing you from a citation-first engine without anyone choosing to.