{
  "entity_a": {
    "slug": "claude-user",
    "name": "Claude-User"
  },
  "entity_b": {
    "slug": "oai-searchbot",
    "name": "OAI-SearchBot"
  },
  "fields_documented": 11,
  "claims": 20,
  "last_verified": "2026-09-15",
  "fields": [
    {
      "field": "cites_sources",
      "value_a": "not_documented",
      "value_b": "yes",
      "claim_id_a": 44,
      "claim_id_b": 100,
      "same": false
    },
    {
      "field": "honours_crawl_delay",
      "value_a": "yes",
      "value_b": "not_documented",
      "claim_id_a": 39,
      "claim_id_b": 95,
      "same": false
    },
    {
      "field": "observed_arrival_before_sitemap",
      "value_a": null,
      "value_b": "yes",
      "claim_id_a": null,
      "claim_id_b": 148,
      "same": false
    },
    {
      "field": "publishes_ip_list",
      "value_a": "yes",
      "value_b": "yes",
      "claim_id_a": 40,
      "claim_id_b": 96,
      "same": true
    },
    {
      "field": "purpose_documented",
      "value_a": "user_fetch",
      "value_b": "search",
      "claim_id_a": 42,
      "claim_id_b": 98,
      "same": false
    },
    {
      "field": "reads_llms_txt",
      "value_a": "not_documented",
      "value_b": "not_documented",
      "claim_id_a": 45,
      "claim_id_b": 101,
      "same": true
    },
    {
      "field": "respects_robots_txt",
      "value_a": "yes",
      "value_b": "yes",
      "claim_id_a": 37,
      "claim_id_b": 94,
      "same": true
    },
    {
      "field": "separate_search_and_training_tokens",
      "value_a": "not_documented",
      "value_b": "yes",
      "claim_id_a": 43,
      "claim_id_b": 99,
      "same": false
    },
    {
      "field": "user_agent_string_full",
      "value_a": "not_documented",
      "value_b": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot",
      "claim_id_a": 46,
      "claim_id_b": 102,
      "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": 97,
      "same": true
    }
  ],
  "differences": [
    {
      "field": "cites_sources",
      "statement_a": "Anthropic does not publish whether Claude responses cite pages fetched by Claude-User.",
      "statement_b": "OAI-SearchBot surfaces crawled websites as links in ChatGPT search answers.",
      "claim_id_a": 44,
      "claim_id_b": 100
    },
    {
      "field": "honours_crawl_delay",
      "statement_a": "Claude-User respects the Crawl-delay directive in robots.txt when fetching pages.",
      "statement_b": "OpenAI does not publish whether OAI-SearchBot honours the robots.txt Crawl-delay directive.",
      "claim_id_a": 39,
      "claim_id_b": 95
    },
    {
      "field": "observed_arrival_before_sitemap",
      "statement_a": null,
      "statement_b": "OAI-SearchBot first requested Rattlesnakes By Mail at 2026-09-13T21:41:14Z, before the Rattlesnakes By Mail sitemap was submitted to Bing Webmaster Tools shortly before 2026-09-15T08:38Z and to Google Search Console at 2026-09-15T09:00Z. OAI-SearchBot made 3 requests to Rattlesnakes By Mail between 2026-09-13T20:00Z and 2026-09-15T09:00Z, all 3 to /robots.txt.",
      "claim_id_a": null,
      "claim_id_b": 148
    },
    {
      "field": "purpose_documented",
      "statement_a": "Claude-User accesses websites in response to questions that individual users ask Claude.",
      "statement_b": "OAI-SearchBot surfaces websites in search results in ChatGPT search features.",
      "claim_id_a": 42,
      "claim_id_b": 98
    },
    {
      "field": "separate_search_and_training_tokens",
      "statement_a": "Anthropic does not document Claude-User as a search or training opt-out token.",
      "statement_b": "OpenAI separates search and training controls into two robots.txt tokens: OAI-SearchBot for search and GPTBot for training.",
      "claim_id_a": 43,
      "claim_id_b": 99
    },
    {
      "field": "user_agent_string_full",
      "statement_a": "Anthropic does not publish a full user agent string for Claude-User.",
      "statement_b": "OAI-SearchBot sends the user agent string Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot.",
      "claim_id_a": 46,
      "claim_id_b": 102
    },
    {
      "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://developers.openai.com/api/docs/bots",
    "https://openai.com/searchbot.json",
    "https://rattlesnakesbymail.com/observed/oai-searchbot",
    "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-content-from-the-web-and-how-can-site-owners-block-the-crawler"
  ]
}