{
  "entity_a": {
    "slug": "claude-user",
    "name": "Claude-User"
  },
  "entity_b": {
    "slug": "perplexitybot",
    "name": "PerplexityBot"
  },
  "fields_documented": 10,
  "claims": 19,
  "last_verified": "2026-09-13",
  "fields": [
    {
      "field": "cites_sources",
      "value_a": "not_documented",
      "value_b": "yes",
      "claim_id_a": 44,
      "claim_id_b": 118,
      "same": false
    },
    {
      "field": "honours_crawl_delay",
      "value_a": "yes",
      "value_b": "not_documented",
      "claim_id_a": 39,
      "claim_id_b": 113,
      "same": false
    },
    {
      "field": "publishes_ip_list",
      "value_a": "yes",
      "value_b": "yes",
      "claim_id_a": 40,
      "claim_id_b": 114,
      "same": true
    },
    {
      "field": "purpose_documented",
      "value_a": "user_fetch",
      "value_b": "search",
      "claim_id_a": 42,
      "claim_id_b": 116,
      "same": false
    },
    {
      "field": "reads_llms_txt",
      "value_a": "not_documented",
      "value_b": "not_documented",
      "claim_id_a": 45,
      "claim_id_b": 119,
      "same": true
    },
    {
      "field": "respects_robots_txt",
      "value_a": "yes",
      "value_b": "yes",
      "claim_id_a": 37,
      "claim_id_b": 112,
      "same": true
    },
    {
      "field": "separate_search_and_training_tokens",
      "value_a": "not_documented",
      "value_b": "not_documented",
      "claim_id_a": 43,
      "claim_id_b": 117,
      "same": true
    },
    {
      "field": "user_agent_string_full",
      "value_a": "not_documented",
      "value_b": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; PerplexityBot/1.0; +https://perplexity.ai/perplexitybot)",
      "claim_id_a": 46,
      "claim_id_b": 120,
      "same": false
    },
    {
      "field": "user_fetch_exception_documented",
      "value_a": "no",
      "value_b": null,
      "claim_id_a": 38,
      "claim_id_b": null,
      "same": false
    },
    {
      "field": "verifiable_by_rdns",
      "value_a": "not_documented",
      "value_b": "not_documented",
      "claim_id_a": 41,
      "claim_id_b": 115,
      "same": true
    }
  ],
  "differences": [
    {
      "field": "cites_sources",
      "statement_a": "Anthropic does not publish whether Claude responses cite pages fetched by Claude-User.",
      "statement_b": "Perplexity links to the websites that PerplexityBot surfaces in Perplexity search results.",
      "claim_id_a": 44,
      "claim_id_b": 118
    },
    {
      "field": "honours_crawl_delay",
      "statement_a": "Claude-User respects the Crawl-delay directive in robots.txt when fetching pages.",
      "statement_b": "Perplexity does not publish whether PerplexityBot honours the robots.txt Crawl-delay directive.",
      "claim_id_a": 39,
      "claim_id_b": 113
    },
    {
      "field": "purpose_documented",
      "statement_a": "Claude-User accesses websites in response to questions that individual users ask Claude.",
      "statement_b": "PerplexityBot surfaces and links websites in Perplexity search results.",
      "claim_id_a": 42,
      "claim_id_b": 116
    },
    {
      "field": "user_agent_string_full",
      "statement_a": "Anthropic does not publish a full user agent string for Claude-User.",
      "statement_b": "PerplexityBot sends the user agent string Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; PerplexityBot/1.0; +https://perplexity.ai/perplexitybot).",
      "claim_id_a": 46,
      "claim_id_b": 120
    },
    {
      "field": "user_fetch_exception_documented",
      "statement_a": "Anthropic applies the same robots.txt statement to Claude-User as to ClaudeBot and Claude-SearchBot and documents no exception for user-initiated fetches.",
      "statement_b": null,
      "claim_id_a": 38,
      "claim_id_b": null
    }
  ],
  "sources": [
    "https://claude.com/crawling/bots.json",
    "https://docs.perplexity.ai/docs/resources/perplexity-crawlers",
    "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-content-from-the-web-and-how-can-site-owners-block-the-crawler",
    "https://www.perplexity.ai/perplexitybot.json"
  ]
}