{
  "entity_a": {
    "slug": "chatgpt-user",
    "name": "ChatGPT-User"
  },
  "entity_b": {
    "slug": "oai-searchbot",
    "name": "OAI-SearchBot"
  },
  "fields_documented": 10,
  "claims": 19,
  "last_verified": "2026-09-15",
  "fields": [
    {
      "field": "cites_sources",
      "value_a": "not_documented",
      "value_b": "yes",
      "claim_id_a": 25,
      "claim_id_b": 100,
      "same": false
    },
    {
      "field": "honours_crawl_delay",
      "value_a": "not_documented",
      "value_b": "not_documented",
      "claim_id_a": 20,
      "claim_id_b": 95,
      "same": true
    },
    {
      "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": 21,
      "claim_id_b": 96,
      "same": true
    },
    {
      "field": "purpose_documented",
      "value_a": "user_fetch",
      "value_b": "search",
      "claim_id_a": 23,
      "claim_id_b": 98,
      "same": false
    },
    {
      "field": "reads_llms_txt",
      "value_a": "not_documented",
      "value_b": "not_documented",
      "claim_id_a": 26,
      "claim_id_b": 101,
      "same": true
    },
    {
      "field": "respects_robots_txt",
      "value_a": "partial",
      "value_b": "yes",
      "claim_id_a": 19,
      "claim_id_b": 94,
      "same": false
    },
    {
      "field": "separate_search_and_training_tokens",
      "value_a": "not_documented",
      "value_b": "yes",
      "claim_id_a": 24,
      "claim_id_b": 99,
      "same": false
    },
    {
      "field": "user_agent_string_full",
      "value_a": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; ChatGPT-User/1.0; +https://openai.com/bot",
      "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": 27,
      "claim_id_b": 102,
      "same": false
    },
    {
      "field": "verifiable_by_rdns",
      "value_a": "not_documented",
      "value_b": "not_documented",
      "claim_id_a": 22,
      "claim_id_b": 97,
      "same": true
    }
  ],
  "differences": [
    {
      "field": "cites_sources",
      "statement_a": "OpenAI does not publish whether ChatGPT responses cite pages fetched by ChatGPT-User.",
      "statement_b": "OAI-SearchBot surfaces crawled websites as links in ChatGPT search answers.",
      "claim_id_a": 25,
      "claim_id_b": 100
    },
    {
      "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": "ChatGPT-User visits web pages for user actions in ChatGPT and in Custom GPTs.",
      "statement_b": "OAI-SearchBot surfaces websites in search results in ChatGPT search features.",
      "claim_id_a": 23,
      "claim_id_b": 98
    },
    {
      "field": "respects_robots_txt",
      "statement_a": "ChatGPT-User fetches pages in response to user actions in ChatGPT, and OpenAI states that robots.txt rules may not apply to ChatGPT-User fetches.",
      "statement_b": "OAI-SearchBot honours robots.txt opt-outs set for the OAI-SearchBot token.",
      "claim_id_a": 19,
      "claim_id_b": 94
    },
    {
      "field": "separate_search_and_training_tokens",
      "statement_a": "OpenAI does not document ChatGPT-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": 24,
      "claim_id_b": 99
    },
    {
      "field": "user_agent_string_full",
      "statement_a": "ChatGPT-User sends the user agent string Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; ChatGPT-User/1.0; +https://openai.com/bot.",
      "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": 27,
      "claim_id_b": 102
    }
  ],
  "sources": [
    "https://developers.openai.com/api/docs/bots",
    "https://openai.com/chatgpt-user.json",
    "https://openai.com/searchbot.json",
    "https://rattlesnakesbymail.com/observed/oai-searchbot"
  ]
}