diff --git a/src/constants.js b/src/constants.js
index e16e23d..9f3d205 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -8,27 +8,39 @@ export const BROWSER_ALIASES_MAP = {
   Bada: 'bada',
   BingCrawler: 'bingcrawler',
   BlackBerry: 'blackberry',
+  'ChatGPT-User': 'chatgpt_user',
   Chrome: 'chrome',
+  ClaudeBot: 'claudebot',
   Chromium: 'chromium',
+  Diffbot: 'diffbot',
   DuckDuckBot: 'duckduckbot',
   Electron: 'electron',
   Epiphany: 'epiphany',
+  FacebookExternalHit: 'facebookexternalhit',
   Firefox: 'firefox',
   Focus: 'focus',
   Generic: 'generic',
   'Google Search': 'google_search',
   Googlebot: 'googlebot',
+  GPTBot: 'gptbot',
   'Internet Explorer': 'ie',
   InternetArchiveCrawler: 'internetarchivecrawler',
   'K-Meleon': 'k_meleon',
   Maxthon: 'maxthon',
-  MetaWebCrawler: 'metawebcrawler',
+  'Meta-ExternalAds': 'meta_externalads',
+  'Meta-ExternalAgent': 'meta_externalagent',
+  'Meta-ExternalFetcher': 'meta_externalfetcher',
+  'Meta-WebIndexer': 'meta_webindexer',
   'Microsoft Edge': 'edge',
   'MZ Browser': 'mz',
   'NAVER Whale Browser': 'naver',
+  'OAI-SearchBot': 'oai_searchbot',
+  Omgilibot: 'omgilibot',
   Opera: 'opera',
   'Opera Coast': 'opera_coast',
   'Pale Moon': 'pale_moon',
+  PerplexityBot: 'perplexitybot',
+  'Perplexity-User': 'perplexity_user',
   PhantomJS: 'phantomjs',
   PingdomBot: 'pingdombot',
   Puffin: 'puffin',
@@ -50,6 +62,7 @@ export const BROWSER_ALIASES_MAP = {
   YahooSlurp: 'yahooslurp',
   'Yandex Browser': 'yandex',
   YandexBot: 'yandexbot',
+  YouBot: 'youbot',
 };
 
 export const BROWSER_MAP = {
@@ -60,27 +73,39 @@ export const BROWSER_MAP = {
   bada: 'Bada',
   bingcrawler: 'BingCrawler',
   blackberry: 'BlackBerry',
+  chatgpt_user: 'ChatGPT-User',
   chrome: 'Chrome',
+  claudebot: 'ClaudeBot',
   chromium: 'Chromium',
+  diffbot: 'Diffbot',
   duckduckbot: 'DuckDuckBot',
   edge: 'Microsoft Edge',
   electron: 'Electron',
   epiphany: 'Epiphany',
+  facebookexternalhit: 'FacebookExternalHit',
   firefox: 'Firefox',
   focus: 'Focus',
   generic: 'Generic',
   google_search: 'Google Search',
   googlebot: 'Googlebot',
+  gptbot: 'GPTBot',
   ie: 'Internet Explorer',
   internetarchivecrawler: 'InternetArchiveCrawler',
   k_meleon: 'K-Meleon',
   maxthon: 'Maxthon',
-  metawebcrawler: 'MetaWebCrawler',
+  meta_externalads: 'Meta-ExternalAds',
+  meta_externalagent: 'Meta-ExternalAgent',
+  meta_externalfetcher: 'Meta-ExternalFetcher',
+  meta_webindexer: 'Meta-WebIndexer',
   mz: 'MZ Browser',
   naver: 'NAVER Whale Browser',
+  oai_searchbot: 'OAI-SearchBot',
+  omgilibot: 'Omgilibot',
   opera: 'Opera',
   opera_coast: 'Opera Coast',
   pale_moon: 'Pale Moon',
+  perplexitybot: 'PerplexityBot',
+  perplexity_user: 'Perplexity-User',
   phantomjs: 'PhantomJS',
   pingdombot: 'PingdomBot',
   puffin: 'Puffin',
@@ -102,6 +127,7 @@ export const BROWSER_MAP = {
   yahooslurp: 'YahooSlurp',
   yandex: 'Yandex Browser',
   yandexbot: 'YandexBot',
+  youbot: 'YouBot',
 };
 
 export const PLATFORMS_MAP = {
diff --git a/src/parser-browsers.js b/src/parser-browsers.js
index 55d4267..621bbb9 100644
--- a/src/parser-browsers.js
+++ b/src/parser-browsers.js
@@ -28,6 +28,227 @@ import Utils from './utils.js';
 const commonVersionIdentifier = /version\/(\d+(\.?_?\d+)+)/i;
 
 const browsersList = [
+  /* GPTBot */
+  {
+    test: [/gptbot/i],
+    describe(ua) {
+      const browser = {
+        name: 'GPTBot',
+      };
+      const version = Utils.getFirstMatch(/gptbot\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* ChatGPT-User */
+  {
+    test: [/chatgpt-user/i],
+    describe(ua) {
+      const browser = {
+        name: 'ChatGPT-User',
+      };
+      const version = Utils.getFirstMatch(/chatgpt-user\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* OAI-SearchBot */
+  {
+    test: [/oai-searchbot/i],
+    describe(ua) {
+      const browser = {
+        name: 'OAI-SearchBot',
+      };
+      const version = Utils.getFirstMatch(/oai-searchbot\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* ClaudeBot */
+  {
+    test: [/claudebot/i, /claude-web/i, /claude-user/i, /claude-searchbot/i],
+    describe(ua) {
+      const browser = {
+        name: 'ClaudeBot',
+      };
+      const version = Utils.getFirstMatch(/(?:claudebot|claude-web|claude-user|claude-searchbot)\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* Omgilibot */
+  {
+    test: [/omgilibot/i, /webzio-extended/i],
+    describe(ua) {
+      const browser = {
+        name: 'Omgilibot',
+      };
+      const version = Utils.getFirstMatch(/(?:omgilibot|webzio-extended)\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* Diffbot */
+  {
+    test: [/diffbot/i],
+    describe(ua) {
+      const browser = {
+        name: 'Diffbot',
+      };
+      const version = Utils.getFirstMatch(/diffbot\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* PerplexityBot */
+  {
+    test: [/perplexitybot/i],
+    describe(ua) {
+      const browser = {
+        name: 'PerplexityBot',
+      };
+      const version = Utils.getFirstMatch(/perplexitybot\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* Perplexity-User */
+  {
+    test: [/perplexity-user/i],
+    describe(ua) {
+      const browser = {
+        name: 'Perplexity-User',
+      };
+      const version = Utils.getFirstMatch(/perplexity-user\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* YouBot */
+  {
+    test: [/youbot/i],
+    describe(ua) {
+      const browser = {
+        name: 'YouBot',
+      };
+      const version = Utils.getFirstMatch(/youbot\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* Meta-WebIndexer */
+  {
+    test: [/meta-webindexer/i],
+    describe(ua) {
+      const browser = {
+        name: 'Meta-WebIndexer',
+      };
+      const version = Utils.getFirstMatch(/meta-webindexer\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* Meta-ExternalAds */
+  {
+    test: [/meta-externalads/i],
+    describe(ua) {
+      const browser = {
+        name: 'Meta-ExternalAds',
+      };
+      const version = Utils.getFirstMatch(/meta-externalads\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* Meta-ExternalAgent */
+  {
+    test: [/meta-externalagent/i],
+    describe(ua) {
+      const browser = {
+        name: 'Meta-ExternalAgent',
+      };
+      const version = Utils.getFirstMatch(/meta-externalagent\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
+  /* Meta-ExternalFetcher */
+  {
+    test: [/meta-externalfetcher/i],
+    describe(ua) {
+      const browser = {
+        name: 'Meta-ExternalFetcher',
+      };
+      const version = Utils.getFirstMatch(/meta-externalfetcher\/(\d+(\.\d+)+)/i, ua) || Utils.getFirstMatch(commonVersionIdentifier, ua);
+
+      if (version) {
+        browser.version = version;
+      }
+
+      return browser;
+    },
+  },
+
   /* Googlebot */
   {
     test: [/googlebot/i],
@@ -130,12 +351,12 @@ const browsersList = [
     },
   },
 
-  /* MetaWebCrawler */
+  /* FacebookExternalHit */
   {
     test: [/facebookexternalhit/i, /facebookcatalog/i],
     describe() {
       return {
-        name: 'MetaWebCrawler',
+        name: 'FacebookExternalHit',
       };
     },
   },
diff --git a/src/parser-platforms.js b/src/parser-platforms.js
index 36e1fb5..74889a5 100644
--- a/src/parser-platforms.js
+++ b/src/parser-platforms.js
@@ -29,6 +29,39 @@ export default [
     },
   },
 
+  /* GPTBot */
+  {
+    test: [/gptbot/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'OpenAI',
+      };
+    },
+  },
+
+  /* ChatGPT-User */
+  {
+    test: [/chatgpt-user/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'OpenAI',
+      };
+    },
+  },
+
+  /* OAI-SearchBot */
+  {
+    test: [/oai-searchbot/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'OpenAI',
+      };
+    },
+  },
+
   /* Baidu */
   {
     test: [/baiduspider/i],
@@ -62,6 +95,72 @@ export default [
     },
   },
 
+  /* ClaudeBot */
+  {
+    test: [/claudebot/i, /claude-web/i, /claude-user/i, /claude-searchbot/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'Anthropic',
+      };
+    },
+  },
+
+  /* Omgilibot */
+  {
+    test: [/omgilibot/i, /webzio-extended/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'Webz.io',
+      };
+    },
+  },
+
+  /* Diffbot */
+  {
+    test: [/diffbot/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'Diffbot',
+      };
+    },
+  },
+
+  /* PerplexityBot */
+  {
+    test: [/perplexitybot/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'Perplexity AI',
+      };
+    },
+  },
+
+  /* Perplexity-User */
+  {
+    test: [/perplexity-user/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'Perplexity AI',
+      };
+    },
+  },
+
+  /* YouBot */
+  {
+    test: [/youbot/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'You.com',
+      };
+    },
+  },
+
   /* Internet Archive Crawler */
   {
     test: [/ia_archiver/i],
@@ -73,6 +172,50 @@ export default [
     },
   },
 
+  /* Meta-WebIndexer */
+  {
+    test: [/meta-webindexer/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'Meta',
+      };
+    },
+  },
+
+  /* Meta-ExternalAds */
+  {
+    test: [/meta-externalads/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'Meta',
+      };
+    },
+  },
+
+  /* Meta-ExternalAgent */
+  {
+    test: [/meta-externalagent/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'Meta',
+      };
+    },
+  },
+
+  /* Meta-ExternalFetcher */
+  {
+    test: [/meta-externalfetcher/i],
+    describe() {
+      return {
+        type: PLATFORMS_MAP.bot,
+        vendor: 'Meta',
+      };
+    },
+  },
+
   /* Meta Web Crawler */
   {
     test: [/facebookexternalhit/i, /facebookcatalog/i],
diff --git a/test/acceptance/useragentstrings.yml b/test/acceptance/useragentstrings.yml
index 008dc94..0f41035 100644
--- a/test/acceptance/useragentstrings.yml
+++ b/test/acceptance/useragentstrings.yml
@@ -2549,6 +2549,211 @@
           vendor: "Google"
         engine:
           name: "Blink"
+  GPTBot:
+    -
+      ua: "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GPTBot/1.1; +https://openai.com/gptbot)"
+      spec:
+        browser:
+          name: "GPTBot"
+          version: "1.1"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "OpenAI"
+        engine:
+          name: "Blink"
+  ChatGPT-User:
+    -
+      ua: "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ChatGPT-User/1.0; +https://openai.com/bot)"
+      spec:
+        browser:
+          name: "ChatGPT-User"
+          version: "1.0"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "OpenAI"
+        engine:
+          name: "Blink"
+  OAI-SearchBot:
+    -
+      ua: "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; OAI-SearchBot/1.0; +https://openai.com/searchbot)"
+      spec:
+        browser:
+          name: "OAI-SearchBot"
+          version: "1.0"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "OpenAI"
+        engine:
+          name: "Blink"
+  ClaudeBot:
+    -
+      ua: "Mozilla/5.0 (compatible; ClaudeBot/1.0; +https://www.anthropic.com/claudebot)"
+      spec:
+        browser:
+          name: "ClaudeBot"
+          version: "1.0"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Anthropic"
+        engine: {}
+  Omgilibot:
+    -
+      ua: "Mozilla/5.0 (compatible; Omgilibot/1.0; +https://www.omgili.com)"
+      spec:
+        browser:
+          name: "Omgilibot"
+          version: "1.0"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Webz.io"
+        engine: {}
+  Meta-WebIndexer:
+    -
+      ua: "meta-webindexer/1.1"
+      spec:
+        browser:
+          name: "Meta-WebIndexer"
+          version: "1.1"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Meta"
+        engine: {}
+    -
+      ua: "meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)"
+      spec:
+        browser:
+          name: "Meta-WebIndexer"
+          version: "1.1"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Meta"
+        engine: {}
+  Meta-ExternalAds:
+    -
+      ua: "meta-externalads/1.1"
+      spec:
+        browser:
+          name: "Meta-ExternalAds"
+          version: "1.1"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Meta"
+        engine: {}
+    -
+      ua: "meta-externalads/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)"
+      spec:
+        browser:
+          name: "Meta-ExternalAds"
+          version: "1.1"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Meta"
+        engine: {}
+  Meta-ExternalAgent:
+    -
+      ua: "meta-externalagent/1.1"
+      spec:
+        browser:
+          name: "Meta-ExternalAgent"
+          version: "1.1"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Meta"
+        engine: {}
+    -
+      ua: "meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)"
+      spec:
+        browser:
+          name: "Meta-ExternalAgent"
+          version: "1.1"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Meta"
+        engine: {}
+  Meta-ExternalFetcher:
+    -
+      ua: "meta-externalfetcher/1.1"
+      spec:
+        browser:
+          name: "Meta-ExternalFetcher"
+          version: "1.1"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Meta"
+        engine: {}
+    -
+      ua: "meta-externalfetcher/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)"
+      spec:
+        browser:
+          name: "Meta-ExternalFetcher"
+          version: "1.1"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Meta"
+        engine: {}
+  Diffbot:
+    -
+      ua: "Mozilla/5.0 (compatible; Diffbot/3.0; +http://www.diffbot.com)"
+      spec:
+        browser:
+          name: "Diffbot"
+          version: "3.0"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Diffbot"
+        engine: {}
+  PerplexityBot:
+    -
+      ua: "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; PerplexityBot/1.0; +https://perplexity.ai/perplexitybot)"
+      spec:
+        browser:
+          name: "PerplexityBot"
+          version: "1.0"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Perplexity AI"
+        engine:
+          name: "Blink"
+  Perplexity-User:
+    -
+      ua: "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user)"
+      spec:
+        browser:
+          name: "Perplexity-User"
+          version: "1.0"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "Perplexity AI"
+        engine:
+          name: "Blink"
+  YouBot:
+    -
+      ua: "Mozilla/5.0 (compatible; YouBot/1.0; +https://you.com/bot)"
+      spec:
+        browser:
+          name: "YouBot"
+          version: "1.0"
+        os: {}
+        platform:
+          type: "bot"
+          vendor: "You.com"
+        engine: {}
   AmazonBot:
      -
        ua: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/600.2.5 (KHTML, like Gecko) Version/8.0.2 Safari/600.2.5 (Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot)"
@@ -2639,12 +2844,12 @@
           type: "bot"
           vendor: "Internet Archive"
         engine: {}
-  MetaWebCrawler:
+  FacebookExternalHit:
     -
       ua: "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)"
       spec:
         browser:
-          name: "MetaWebCrawler"
+          name: "FacebookExternalHit"
         os: {}
         platform:
           type: "bot"
@@ -2654,7 +2859,7 @@
       ua: "facebookexternalhit/1.1"
       spec:
         browser:
-          name: "MetaWebCrawler"
+          name: "FacebookExternalHit"
         os: {}
         platform:
           type: "bot"
@@ -2664,7 +2869,7 @@
       ua: "facebookcatalog/1.0"
       spec:
         browser:
-          name: "MetaWebCrawler"
+          name: "FacebookExternalHit"
         os: {}
         platform:
           type: "bot"