{ "entity_a": { "slug": "bingbot", "name": "Bingbot" }, "entity_b": { "slug": "google-extended", "name": "Google-Extended" }, "fields_documented": 13, "claims": 19, "last_verified": "2026-09-14", "fields": [ { "field": "cites_sources", "value_a": "yes", "value_b": null, "claim_id_a": 127, "claim_id_b": null, "same": false }, { "field": "follows_noarchive", "value_a": "yes", "value_b": null, "claim_id_a": 131, "claim_id_b": null, "same": false }, { "field": "honours_crawl_delay", "value_a": "yes", "value_b": "n/a", "claim_id_a": 122, "claim_id_b": 56, "same": false }, { "field": "opt_out_mechanism", "value_a": "yes", "value_b": null, "claim_id_a": 130, "claim_id_b": null, "same": false }, { "field": "publishes_ip_list", "value_a": "yes", "value_b": "no", "claim_id_a": 123, "claim_id_b": 57, "same": false }, { "field": "purpose_documented", "value_a": "yes", "value_b": "policy_only", "claim_id_a": 125, "claim_id_b": 59, "same": false }, { "field": "reads_llms_txt", "value_a": "not_documented", "value_b": null, "claim_id_a": 128, "claim_id_b": null, "same": false }, { "field": "respects_robots_txt", "value_a": "yes", "value_b": "n/a", "claim_id_a": 121, "claim_id_b": 55, "same": false }, { "field": "robots_token_differs_from_ua", "value_a": null, "value_b": "yes", "claim_id_a": null, "claim_id_b": 62, "same": false }, { "field": "separate_search_and_training_tokens", "value_a": "no", "value_b": "yes", "claim_id_a": 126, "claim_id_b": 60, "same": false }, { "field": "user_agent_string_full", "value_a": "Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)", "value_b": null, "claim_id_a": 129, "claim_id_b": null, "same": false }, { "field": "verifiable_by_rdns", "value_a": "yes", "value_b": "n/a", "claim_id_a": 124, "claim_id_b": 58, "same": false }, { "field": "what_it_controls", "value_a": null, "value_b": "Gemini model training and grounding, not Search inclusion", "claim_id_a": null, "claim_id_b": 61, "same": false } ], "differences": [ { "field": "cites_sources", "statement_a": "Copilot Search in Bing delivers clearly cited sources alongside generative answers to support publishers and content owners.", "statement_b": null, "claim_id_a": 127, "claim_id_b": null }, { "field": "follows_noarchive", "statement_a": "Bingbot excludes noarchive-tagged content from Copilot and Chat answers and from generative AI training data.", "statement_b": null, "claim_id_a": 131, "claim_id_b": null }, { "field": "honours_crawl_delay", "statement_a": "Microsoft states that a crawl-delay directive in robots.txt always takes precedence over Bing Webmaster Tools crawl control settings for Bingbot.", "statement_b": "Google does not publish any Crawl-delay behaviour for the Google-Extended token.", "claim_id_a": 122, "claim_id_b": 56 }, { "field": "opt_out_mechanism", "statement_a": "Microsoft lets publishers block Bingbot content from Copilot answers and AI training using noarchive and nocache tags.", "statement_b": null, "claim_id_a": 130, "claim_id_b": null }, { "field": "publishes_ip_list", "statement_a": "Microsoft publishes Bingbot's IP address ranges as a JSON file at bing.com/toolbox/bingbot.json for verification purposes.", "statement_b": "Google publishes no IP list for Google-Extended because Google-Extended has no separate HTTP request user agent string.", "claim_id_a": 123, "claim_id_b": 57 }, { "field": "purpose_documented", "statement_a": "Bingbot serves as Microsoft's standard crawler and handles most of Bing's daily web crawling.", "statement_b": "Google-Extended is a standalone product token that controls whether Google uses crawled content to train Gemini models.", "claim_id_a": 125, "claim_id_b": 59 }, { "field": "reads_llms_txt", "statement_a": "Microsoft does not publish whether Bingbot reads llms.txt files.", "statement_b": null, "claim_id_a": 128, "claim_id_b": null }, { "field": "respects_robots_txt", "statement_a": "Bingbot honors robots.txt directives and other Microsoft-supported control mechanisms that content owners set for crawling.", "statement_b": "Google-Extended is a robots.txt token that publishers set to control use of crawled content for Gemini training.", "claim_id_a": 121, "claim_id_b": 55 }, { "field": "robots_token_differs_from_ua", "statement_a": null, "statement_b": "Google-Extended is a robots.txt control token and does not correspond to a crawler user agent string.", "claim_id_a": null, "claim_id_b": 62 }, { "field": "separate_search_and_training_tokens", "statement_a": "Microsoft controls Bingbot's use in AI training through meta tags rather than publishing a separate training-specific crawler token.", "statement_b": "Google-Extended controls Gemini training use only and does not affect inclusion in Google Search.", "claim_id_a": 126, "claim_id_b": 60 }, { "field": "user_agent_string_full", "statement_a": "Bingbot sends a user agent string containing bingbot/2.0 and a link to Microsoft's bingbot.htm page.", "statement_b": null, "claim_id_a": 129, "claim_id_b": null }, { "field": "verifiable_by_rdns", "statement_a": "Microsoft verifies Bingbot traffic through reverse DNS lookups that resolve to hostnames ending in search.msn.com.", "statement_b": "Google does not publish a reverse-DNS verification method for Google-Extended.", "claim_id_a": 124, "claim_id_b": 58 }, { "field": "what_it_controls", "statement_a": null, "statement_b": "Google-Extended controls AI training and grounding in Google systems and does not control Google Search inclusion.", "claim_id_a": null, "claim_id_b": 61 } ], "sources": [ "https://blogs.bing.com/search/April-2025/Introducing-Copilot-Search-in-Bing", "https://developers.google.com/search/docs/appearance/ai-features", "https://developers.google.com/search/docs/crawling-indexing/google-common-crawlers", "https://www.bing.com/toolbox/bingbot.json", "https://www.bing.com/webmasters/help/ai-performance-9f8e7d6c", "https://www.bing.com/webmasters/help/crawl-control-55a30303", "https://www.bing.com/webmasters/help/how-to-verify-bingbot-3905dc26", "https://www.bing.com/webmasters/help/robots-meta-tags-and-attributes-that-bing-supports-5198d240", "https://www.bing.com/webmasters/help/which-crawlers-does-bing-use-8c184ec0" ] }