Rattlesnakes By Mail

Googlebot vs PerplexityBot

Googlebot and PerplexityBot compared on 10 documented fields, from 19 claims, last verified 2026-09-15.

How many of the compared fields have the same answer for both crawlers, and how many differ.

Googlebot and PerplexityBot, fields comparedGooglebot and PerplexityBot, fields compared. Different is the largest with 6 fields, out of 10 fields in total.Same: 4 fieldsSame4Different: 6 fieldsDifferent6
Googlebot and PerplexityBot, fields compared. Different is the largest with 6 fields, out of 10 fields in total. Source: each vendor's own crawler documentation, quoted and dated on every claim page.
FieldGooglebotPerplexityBotComparison
cites_sourcesyesyessame
honours_crawl_delaynonot_documenteddifferent
observed_verified_request_ratio_census0.991not documenteddifferent
publishes_ip_listyesyessame
purpose_documentedsearchsearchsame
reads_llms_txtnonot_documenteddifferent
respects_robots_txtyesyessame
separate_search_and_training_tokensyesnot_documenteddifferent
user_agent_string_fullMozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html)Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; PerplexityBot/1.0; +https://perplexity.ai/perplexitybot)different
verifiable_by_rdnsyesnot_documenteddifferent

Differences

FieldGooglebot statementPerplexityBot statement
honours_crawl_delayGoogle does not support the robots.txt Crawl-delay directive for Googlebot.Perplexity does not publish whether PerplexityBot honours the robots.txt Crawl-delay directive.
observed_verified_request_ratio_censusGooglebot requests to Rattlesnakes By Mail matched Google's published IP ranges on 108 of 109 requests between 2026-09-13T20:00Z and 2026-09-15T09:00Z. Googlebot's first request to Rattlesnakes By Mail in that window was /robots.txt at 2026-09-14T11:53:00Z.not documented
reads_llms_txtGoogle Search does not use llms.txt files.Perplexity does not publish whether PerplexityBot reads llms.txt files.
separate_search_and_training_tokensGoogle separates Search crawling under the Googlebot token from Gemini training under the Google-Extended token.Perplexity does not document a separate training crawler token alongside PerplexityBot.
user_agent_string_fullGooglebot sends the user agent string Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html).PerplexityBot sends the user agent string Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; PerplexityBot/1.0; +https://perplexity.ai/perplexitybot).
verifiable_by_rdnsGooglebot requests are verifiable by reverse DNS lookup resolving to googlebot.com, google.com, or googleusercontent.com.Perplexity does not publish a reverse-DNS verification method for PerplexityBot.

Sources