{
  "entity_a": {
    "slug": "claude-searchbot",
    "name": "Claude-SearchBot"
  },
  "entity_b": {
    "slug": "perplexity-user",
    "name": "Perplexity-User"
  },
  "fields_documented": 9,
  "claims": 18,
  "last_verified": "2026-09-13",
  "fields": [
    {
      "field": "cites_sources",
      "value_a": "not_documented",
      "value_b": "yes",
      "claim_id_a": 34,
      "claim_id_b": 109,
      "same": false
    },
    {
      "field": "honours_crawl_delay",
      "value_a": "yes",
      "value_b": "not_documented",
      "claim_id_a": 29,
      "claim_id_b": 104,
      "same": false
    },
    {
      "field": "publishes_ip_list",
      "value_a": "yes",
      "value_b": "yes",
      "claim_id_a": 30,
      "claim_id_b": 105,
      "same": true
    },
    {
      "field": "purpose_documented",
      "value_a": "search",
      "value_b": "user_fetch",
      "claim_id_a": 32,
      "claim_id_b": 107,
      "same": false
    },
    {
      "field": "reads_llms_txt",
      "value_a": "not_documented",
      "value_b": "not_documented",
      "claim_id_a": 35,
      "claim_id_b": 110,
      "same": true
    },
    {
      "field": "respects_robots_txt",
      "value_a": "yes",
      "value_b": "no",
      "claim_id_a": 28,
      "claim_id_b": 103,
      "same": false
    },
    {
      "field": "separate_search_and_training_tokens",
      "value_a": "yes",
      "value_b": "not_documented",
      "claim_id_a": 33,
      "claim_id_b": 108,
      "same": false
    },
    {
      "field": "user_agent_string_full",
      "value_a": "not_documented",
      "value_b": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user)",
      "claim_id_a": 36,
      "claim_id_b": 111,
      "same": false
    },
    {
      "field": "verifiable_by_rdns",
      "value_a": "not_documented",
      "value_b": "not_documented",
      "claim_id_a": 31,
      "claim_id_b": 106,
      "same": true
    }
  ],
  "differences": [
    {
      "field": "cites_sources",
      "statement_a": "Anthropic does not publish whether Claude search responses cite pages crawled by Claude-SearchBot.",
      "statement_b": "Perplexity includes a link to each page that Perplexity-User visits in the Perplexity response.",
      "claim_id_a": 34,
      "claim_id_b": 109
    },
    {
      "field": "honours_crawl_delay",
      "statement_a": "Claude-SearchBot respects the Crawl-delay directive in robots.txt when crawling domains.",
      "statement_b": "Perplexity does not publish whether Perplexity-User honours the robots.txt Crawl-delay directive.",
      "claim_id_a": 29,
      "claim_id_b": 104
    },
    {
      "field": "purpose_documented",
      "statement_a": "Claude-SearchBot analyses online content to improve the relevance and accuracy of Claude search responses.",
      "statement_b": "Perplexity-User visits web pages to answer questions that users ask Perplexity.",
      "claim_id_a": 32,
      "claim_id_b": 107
    },
    {
      "field": "respects_robots_txt",
      "statement_a": "Claude-SearchBot honours industry standard robots.txt directives that signal do not crawl.",
      "statement_b": "Perplexity-User ignores robots.txt rules because a user requests each Perplexity-User fetch.",
      "claim_id_a": 28,
      "claim_id_b": 103
    },
    {
      "field": "separate_search_and_training_tokens",
      "statement_a": "Anthropic separates search and training controls into two robots.txt tokens: Claude-SearchBot for search and ClaudeBot for training.",
      "statement_b": "Perplexity does not document Perplexity-User as a search or training opt-out token.",
      "claim_id_a": 33,
      "claim_id_b": 108
    },
    {
      "field": "user_agent_string_full",
      "statement_a": "Anthropic does not publish a full user agent string for Claude-SearchBot.",
      "statement_b": "Perplexity-User sends the user agent string Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user).",
      "claim_id_a": 36,
      "claim_id_b": 111
    }
  ],
  "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/perplexity-user.json"
  ]
}