Perplexity

PerplexityBot

Perplexity says this crawler is not for foundation-model training. Cloudflare documented separate undeclared crawling in August 2025, which Perplexity disputed.

Class: Search index
robots.txt: Says it honours robots.txt
Evidence: Confirmed from operator documentation; Source

Published User-Agent

Mozilla/5.0 (compatible; PerplexityBot/1.0; +https://perplexity.ai/perplexitybot)

Proving it is real

Check the IP against Perplexity's PerplexityBot file.

Check an address now.

Blocking it

robots.txt

User-agent: PerplexityBot
Disallow: /

Cloudflare custom rule expression

(http.user_agent contains "PerplexityBot")

nginx

if ($http_user_agent ~* "PerplexityBot") {
    return 403;
}

Matching a name only blocks bots that tell the truth about it. Before you do this, read what each decision costs.

Last reviewed Nov 2, 2026