{"id":9815,"date":"2025-05-27T17:21:11","date_gmt":"2025-05-27T17:21:11","guid":{"rendered":"https:\/\/undetectable.ai/blog\/?p=9815"},"modified":"2026-04-09T01:42:28","modified_gmt":"2026-04-09T01:42:28","slug":"copyleaks-recenze","status":"publish","type":"post","link":"https:\/\/undetectable.ai/blog\/cs\/copyleaks-recenze\/","title":{"rendered":"Recenze Copyleaks: Je p\u0159esn\u00fd pro detekci um\u011bl\u00e9 inteligence?"},"content":{"rendered":"<p>Studie Cornell Tech Study (2023) ozna\u010dila Copyleaks za \"nejp\u0159esn\u011bj\u0161\u00ed\" detektor um\u011bl\u00e9 inteligence.&nbsp;<\/p>\n\n\n\n<p>Toto rozpozn\u00e1n\u00ed p\u0159i\u0161lo je\u0161t\u011b p\u0159ed vznikem pokro\u010dilej\u0161\u00edch jazykov\u00fdch model\u016f, jako jsou ChatGPT, Gemini a Claude.<\/p>\n\n\n\n<p>Um\u011blou inteligenci Copyleaks dnes st\u00e1le hojn\u011b vyu\u017e\u00edvaj\u00ed spole\u010dnosti z \u017eeb\u0159\u00ed\u010dku Fortune 500 a \u0161pi\u010dkov\u00e9 univerzity.&nbsp;<\/p>\n\n\n\n<p>Je to d\u016fv\u011bryhodn\u00e9 \u0159e\u0161en\u00ed pro identifikaci obsahu napsan\u00e9ho um\u011blou inteligenc\u00ed s p\u0159esnost\u00ed 99,8%.<\/p>\n\n\n\n<p>V\u00edme, \u017ee detekce um\u011bl\u00e9 inteligence je pohybliv\u00fd c\u00edl. To, co dokonale fungovalo p\u0159i detekci obsahu GPT-2, m\u016f\u017ee zcela vynechat nuance GPT-4.<\/p>\n\n\n\n<p>Jak dob\u0159e obstoj\u00ed detektor um\u011bl\u00e9 inteligence Copyleaks v roce 2025? Zvl\u00e1\u0161t\u011b te\u010f, kdy\u017e je obsah generovan\u00fd um\u011blou inteligenc\u00ed den ode dne chyt\u0159ej\u0161\u00ed?&nbsp;<\/p>\n\n\n\n<p>V tomto blogu se bl\u00ed\u017ee pod\u00edv\u00e1me na to, zda je Copyleaks p\u0159esn\u00fd pro pot\u0159eby detekce modern\u00ed um\u011bl\u00e9 inteligence. <\/p>\n\n\n\n<p>Vysv\u011btl\u00edme v\u00e1m, k \u010demu slou\u017e\u00ed, zd\u016frazn\u00edme jeho kl\u00ed\u010dov\u00e9 funkce, otestujeme ho v re\u00e1ln\u00fdch p\u0159\u00edpadech pou\u017eit\u00ed a pod\u011bl\u00edme se o v\u00fdhody a nev\u00fdhody, abychom v\u00e1m pomohli rozhodnout se, zda je pro v\u00e1s vhodn\u00fd.<\/p>\n\n\n\n<p>Poj\u010fme se do toho pono\u0159it.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Co je Copyleaks?<\/h2>\n\n\n\n<p>Copyleaks ai je <strong>cloudov\u00fd n\u00e1stroj<\/strong> kter\u00e1 kontroluje, zda je obsah origin\u00e1ln\u00ed. Dok\u00e1\u017ee odhalit plagi\u00e1ty i text napsan\u00fd um\u011blou inteligenc\u00ed.&nbsp;<\/p>\n\n\n\n<p>\u0160koly, vydavatel\u00e9 a podniky ji pou\u017e\u00edvaj\u00ed, aby se ujistili, \u017ee to, co \u010dtou, skute\u010dn\u011b napsal \u010dlov\u011bk.<\/p>\n\n\n\n<p>Na str\u00e1nk\u00e1ch <strong>spole\u010dnost zah\u00e1jila \u010dinnost v roce 2015.<\/strong> Zpo\u010d\u00e1tku se zam\u011b\u0159ovala na \u0161koly a univerzity.&nbsp;<\/p>\n\n\n\n<p>Postupem \u010dasu v\u0161ak za\u010dalo tuto hodnotu vn\u00edmat v\u00edce odv\u011btv\u00ed - nap\u0159\u00edklad n\u00e1jemn\u00ed t\u00fdmy, tv\u016frci obsahu, a dokonce i marketingov\u00e9 agentury.<\/p>\n\n\n\n<p>V j\u00e1dru vyu\u017e\u00edv\u00e1 um\u011blou inteligenci. Konkr\u00e9tn\u011b strojov\u00e9 u\u010den\u00ed a zpracov\u00e1n\u00ed p\u0159irozen\u00e9ho jazyka.&nbsp;<\/p>\n\n\n\n<p>To znamen\u00e1, \u017ee <strong>nehled\u00e1 pouze copy-paste<\/strong>. Sna\u017e\u00ed se pochopit my\u0161lenkov\u00e9 vzorce, strukturu a dokonce i p\u0159eformulovan\u00fd materi\u00e1l.<\/p>\n\n\n\n<p><strong>Nap\u0159\u00edklad,&nbsp;<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>U\u010ditel<\/strong> m\u016f\u017ee pou\u017e\u00edt ke kontrole, zda je studentova pr\u00e1ce origin\u00e1ln\u00ed.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Autor obsahu<\/strong> m\u016f\u017ee spustit p\u0159\u00edsp\u011bvek na blogu p\u0159es Copyleaks, aby se zabr\u00e1nilo n\u00e1hodn\u00e9mu duplikov\u00e1n\u00ed.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>N\u00e1bor\u00e1\u0159<\/strong> m\u016f\u017ee skenovat \u017eivotopisy a odhalit \u017e\u00e1dosti vytvo\u0159en\u00e9 um\u011blou inteligenc\u00ed. Je to u\u017eite\u010dn\u00e9 na v\u00edce m\u00edstech, ne\u017e si mysl\u00edte.<\/li>\n<\/ul>\n\n\n\n<p>Detektor obsahu Copyleaks ai tak\u00e9 spl\u0148uje p\u0159\u00edsn\u00e9 bezpe\u010dnostn\u00ed standardy. Je v souladu s FERPA, GDPR a SOC 2. Pokud tedy nakl\u00e1d\u00e1te se soukrom\u00fdmi daty, je vytvo\u0159en tak, aby je udr\u017eel v bezpe\u010d\u00ed.<\/p>\n\n\n\n<p>V roce 2025<strong> vydala nejnov\u011bj\u0161\u00ed verzi<\/strong>-V8, kter\u00fd je rychlej\u0161\u00ed a l\u00e9pe zachycuje parafr\u00e1zovan\u00fd obsah AI. Nyn\u00ed si probereme funkce funkce Copy leaks.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Funkce slu\u017eby Copyleaks<\/h3>\n\n\n\n<p>Poj\u010fme si rozebrat jednotliv\u00e9 funkce Copyleaks ai, abychom pochopili, jak funguj\u00ed, a jejich praktick\u00e9 vyu\u017eit\u00ed.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Detekuje obsah napsan\u00fd um\u011blou inteligenc\u00ed pomoc\u00ed <strong>hlub\u0161\u00ed p\u0159esnost,<\/strong> pom\u00e1h\u00e1 v\u00e1m ov\u011b\u0159it pravost nad r\u00e1mec povrchn\u00edch vzor\u016f.<br><\/li>\n\n\n\n<li>Vlajky i <strong>obt\u00ed\u017en\u011b zjistiteln\u00e9 plagi\u00e1ty<\/strong>, ochrana d\u016fv\u011bryhodnosti akademick\u00e9 obce nebo zna\u010dky v digit\u00e1ln\u00edch i offline zdroj\u00edch.<br><\/li>\n\n\n\n<li><strong>Zachyt\u00ed parafr\u00e1zovan\u00fd nebo p\u0159eformulovan\u00fd obsah,<\/strong> zaji\u0161t\u011bn\u00ed originality v p\u0159\u00edpadech, kdy nejde o p\u0159\u00edm\u00e9 kop\u00edrov\u00e1n\u00ed a vkl\u00e1d\u00e1n\u00ed.<br><\/li>\n\n\n\n<li><strong>Podpora v\u00edce ne\u017e 30 jazyk\u016f <\/strong>aby glob\u00e1ln\u00ed t\u00fdmy a instituce mohly s jistotou ov\u011b\u0159ovat obsah v nativn\u00edch form\u00e1tech.<br><\/li>\n\n\n\n<li><strong>Snadn\u00e9 p\u0159ipojen\u00ed ke st\u00e1vaj\u00edc\u00edm syst\u00e9m\u016fm,<\/strong> sn\u00ed\u017een\u00ed po\u010dtu ru\u010dn\u00edch kontrol a \u00faspora \u010dasu p\u0159i jejich prov\u00e1d\u011bn\u00ed.<br><\/li>\n\n\n\n<li>Umo\u017e\u0148uje v\u00e1m <strong>skenov\u00e1n\u00ed webov\u00e9ho obsahu<\/strong> okam\u017eit\u011b p\u0159i proch\u00e1zen\u00ed, tak\u017ee ka\u017edodenn\u00ed pou\u017e\u00edv\u00e1n\u00ed je rychl\u00e9 a efektivn\u00ed.<br><\/li>\n\n\n\n<li><strong>Poskytuje flexibiln\u00ed mo\u017enosti skenov\u00e1n\u00ed<\/strong> abyste mohli kontrolovat obsah, a\u0165 u\u017e pracujete kdekoli a jakkoli.<br><\/li>\n\n\n\n<li>Nab\u00edz\u00ed <strong>u\u017eivatelsky p\u0159\u00edv\u011btiv\u00fd p\u0159\u00edstrojov\u00fd panel<\/strong> kter\u00fd usnad\u0148uje interpretaci v\u00fdsledk\u016f a rychl\u00e9 p\u0159ijet\u00ed opat\u0159en\u00ed.<br><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Testov\u00e1n\u00ed p\u0159esnosti slu\u017eby Copyleaks<\/h2>\n\n\n\n<p>Copyleaks tvrd\u00ed, \u017ee p\u0159esnost je 99,8%.&nbsp;<\/p>\n\n\n\n<p>Jak to ale vypad\u00e1 v re\u00e1ln\u00e9m sv\u011bt\u011b? A co je d\u016fle\u017eit\u011bj\u0161\u00ed, je Copyleaks p\u0159esn\u00fd, kdy\u017e se zab\u00fdv\u00e1 modern\u00edm obsahem um\u011bl\u00e9 inteligence?<\/p>\n\n\n\n<p>Abychom to zjistili, pou\u017eili jsme stejnou strukturu hodnocen\u00ed, jakou m\u00e1 <a href=\"https:\/\/www.zdnet.com\/article\/i-tested-10-ai-content-detectors-and-these-5-correctly-identified-ai-text-every-time\/\" target=\"_blank\" rel=\"noreferrer noopener\">ZDNet pou\u017eil p\u0159i testov\u00e1n\u00ed 10 detektor\u016f AI<\/a>: kombinace obsahu pln\u011b vytvo\u0159en\u00e9ho um\u011blou inteligenc\u00ed, pln\u011b lidsk\u00e9ho, parafr\u00e1zovan\u00e9ho, upraven\u00e9ho a hybridn\u00edho obsahu.&nbsp;<\/p>\n\n\n\n<p>Pro p\u0159edstavu, intern\u00ed n\u00e1stroj spole\u010dnosti ZDNet dos\u00e1hl p\u0159esnosti 80%.&nbsp;<\/p>\n\n\n\n<p><strong>Test: 6 kategori\u00ed obsahu<\/strong><\/p>\n\n\n\n<p>K testov\u00e1n\u00ed p\u0159esnosti detektoru um\u011bl\u00e9 inteligence Copyleaks jsme pou\u017eili \u0161est typ\u016f obsahu:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Kategorie<\/strong><\/td><td><strong>Typ obsahu&nbsp;<\/strong><\/td><td><strong>N\u00e1zev<\/strong><\/td><\/tr><tr><td>1<\/td><td>100% AI<\/td><td>Chytr\u00e9 hodinky Popis produktu<\/td><\/tr><tr><td>2<\/td><td>100% \u010clov\u011bk<\/td><td>M\u011bla by ka\u017ed\u00e1 spole\u010dnost koupit sv\u00e9mu prezidentovi Rolls-Royce?<\/td><\/tr><tr><td>3<\/td><td>Lehce upraven\u00e1 um\u011bl\u00e1 inteligence<\/td><td>\u00davod do blogu o zm\u011bn\u011b klimatu<\/td><\/tr><tr><td>4<\/td><td>Parafr\u00e1zovan\u00e1 um\u011bl\u00e1 inteligence (p\u0159es Undetectable AI Humanizer)<\/td><td>P\u0159eformulovan\u00fd blog o zm\u011bn\u011b klimatu<\/td><\/tr><tr><td>5<\/td><td>Sm\u00ed\u0161en\u00fd lidsk\u00fd + AI<\/td><td>Rodi\u010dovsk\u00e9 v\u00fdzvy<\/td><\/tr><tr><td>6<\/td><td>Um\u011bl\u00e1 inteligence s plagi\u00e1torstv\u00edm<\/td><td>\u010cl\u00e1nek na Wikipedii o anglick\u00e9 literatu\u0159e<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Pod\u00edvejme se, jak si detektor um\u011bl\u00e9 inteligence Copyleaks vede v ka\u017ed\u00e9 ze 6 kategori\u00ed.\u00a0<\/p>\n\n\n\n<p><strong>Kategorie 1 - 100% AI<\/strong><\/p>\n\n\n\n<p>Realita: Pln\u011b AI<br>Copyleaks V\u00fdsledek: 100% AI<br>Verdikt: \u2705 Spr\u00e1vn\u00e1 detekce<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"481\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-001-1024x481.jpg\" alt=\"\" class=\"wp-image-9820\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-001-1024x481.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-001-300x141.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-001-768x361.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-001-18x8.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-001.jpg 1343w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><strong>Kategorie 2 - 100% Human (Ogilvy Ad)<\/strong><\/p>\n\n\n\n<p>Realita: Naps\u00e1no \u010dlov\u011bkem<br>Copyleaks V\u00fdsledek: 0% AI<br>Verdikt: \u2705 Spr\u00e1vn\u00e1 detekce<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"483\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-002-1024x483.jpg\" alt=\"\" class=\"wp-image-9821\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-002-1024x483.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-002-300x141.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-002-768x362.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-002-18x8.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-002.jpg 1341w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><strong>Kategorie 3 - Lehce upraven\u00e1 um\u011bl\u00e1 inteligence<\/strong><\/p>\n\n\n\n<p>Realita: P\u0159edev\u0161\u00edm um\u011bl\u00e1 inteligence s \u00fapravami<br>Copyleaks V\u00fdsledek: 100% AI<br>Verdikt: \u274c Fale\u0161n\u00e1 pozitivita<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lidsk\u00fd z\u00e1sah je p\u0159\u00edtomen, ale je ozna\u010den jako pln\u011b AI.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-003-1024x485.jpg\" alt=\"\" class=\"wp-image-9822\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-003-1024x485.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-003-300x142.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-003-768x364.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-003-18x9.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-003.jpg 1337w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><strong>Kategorie 4 - Parafr\u00e1zovan\u00e1 AI (n\u00e1stroj AI Humanizer)<\/strong><\/p>\n\n\n\n<p>Realita: P\u016fvod um\u011bl\u00e9 inteligence, parafr\u00e1zov\u00e1no tak, aby zn\u011blo lidsky<br>Copyleaks V\u00fdsledek: 0% AI<br>Verdikt: \u274c Fale\u0161n\u011b negativn\u00ed<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00dapln\u011b jsem p\u0159ehl\u00e9dl j\u00e1dro generovan\u00e9 um\u011blou inteligenc\u00ed, kter\u00e9 bylo maskov\u00e1no parafr\u00e1zov\u00e1n\u00edm.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"483\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copylaks-004-1024x483.jpg\" alt=\"\" class=\"wp-image-9823\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copylaks-004-1024x483.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copylaks-004-300x142.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copylaks-004-768x363.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copylaks-004-18x8.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copylaks-004.jpg 1343w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><strong>Kategorie 5 - Sm\u00ed\u0161en\u00e1 kategorie \u010dlov\u011bk + um\u011bl\u00e1 inteligence<\/strong><\/p>\n\n\n\n<p>Realita: Sm\u00ed\u0161en\u00fd obsah (\u010d\u00e1st lidsk\u00e9ho p\u00edsma + fr\u00e1ze ChatGPT)<br>Copyleaks V\u00fdsledek: 100% AI<br>Verdikt: \u274c Fale\u0161n\u00e1 pozitivita<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sm\u00ed\u0161en\u00e9 psan\u00ed pova\u017euje za pln\u011b um\u011blou inteligenci bez nuanc\u00ed.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-005-1024x485.jpg\" alt=\"\" class=\"wp-image-9825\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-005-1024x485.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-005-300x142.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-005-768x364.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-005-18x9.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-005.jpg 1343w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><strong>Kategorie 6 - UI s plagi\u00e1torstv\u00edm<\/strong><\/p>\n\n\n\n<p>Realita: Naps\u00e1no um\u011blou inteligenc\u00ed s historick\u00fdm faktografick\u00fdm p\u0159esahem<br>Copyleaks V\u00fdsledek: 82.6% AI<br>Verdikt: \u2705 Spr\u00e1vn\u00e1 detekce (p\u0159ijateln\u00e1 rezerva kv\u016fli p\u0159ekr\u00fdv\u00e1n\u00ed s v\u011bcn\u00fdm obsahem)<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"478\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-006-1024x478.jpg\" alt=\"\" class=\"wp-image-9826\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-006-1024x478.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-006-300x140.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-006-768x359.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-006-18x8.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-006.jpg 1343w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><strong>Z\u00e1v\u011bre\u010dn\u00e1 v\u00fdsledkov\u00e1 listina<\/strong><\/p>\n\n\n\n<p>Z celkov\u00e9ho po\u010dtu 6 testovac\u00edch p\u0159\u00edpad\u016f:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Spr\u00e1vn\u00e9 detekce: 3<\/li>\n\n\n\n<li>Fale\u0161n\u011b pozitivn\u00ed\/negativn\u00ed v\u00fdsledky: 3<\/li>\n<\/ul>\n\n\n\n<p><strong>P\u0159esnost detekce: <\/strong>50%<\/p>\n\n\n\n<p>To znamen\u00e1, \u017ee detektor Copyleaks AI p\u0159esn\u011b identifikoval pouze 3 ze 6 p\u0159\u00edpad\u016f, p\u0159i\u010dem\u017e <strong>sm\u011bs fale\u0161n\u011b pozitivn\u00edch v\u00fdsledk\u016f<\/strong> (kategorie 3 a 5) a <strong>fale\u0161n\u011b negativn\u00ed v\u00fdsledky<\/strong> (Kategorie 4). To je p\u0159esnost 50%.&nbsp;<\/p>\n\n\n\n<p>Copyleaks ai se pot\u00fdk\u00e1 s okrajov\u00fdmi p\u0159\u00edpady:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nedok\u00e1\u017ee rozpoznat parafr\u00e1zovanou um\u011blou inteligenci (zn\u00e1m\u00e1 taktika v re\u00e1ln\u00e9m sv\u011bt\u011b).<\/li>\n\n\n\n<li>nespr\u00e1vn\u011b ozna\u010duje upraven\u00fd\/sm\u00ed\u0161en\u00fd obsah jako \u010dist\u011b um\u011blou inteligenci.<\/li>\n\n\n\n<li>Nevykazuje \u017e\u00e1dn\u00e9 nuance p\u0159i posuzov\u00e1n\u00ed \u010d\u00e1ste\u010dn\u00e9ho zapojen\u00ed UI.<\/li>\n<\/ul>\n\n\n\n<p>Tento experiment dokazuje jednu v\u011bc: detektor obsahu Copyleaks ai funguje p\u0159im\u011b\u0159en\u011b v \u010dernob\u00edl\u00fdch p\u0159\u00edpadech (pln\u011b um\u011bl\u00e1 inteligence nebo pln\u011b \u010dlov\u011bk), ale hrout\u00ed se v \u0161ed\u00e9 z\u00f3n\u011b - p\u0159esn\u011b v tom prostoru, kde na praktick\u00e9 detekci z\u00e1le\u017e\u00ed nejv\u00edce.&nbsp;<\/p>\n\n\n\n<p>Jejich tvrzen\u00ed <strong>99.8% p\u0159esnost<\/strong> neobstoj\u00ed v kritick\u00fdch a r\u016fznorod\u00fdch testech.<\/p>\n\n\n\n<p>Naproti tomu nezjistiteln\u00e1 um\u011bl\u00e1 inteligence <a href=\"https:\/\/undetectable.ai\/\" target=\"_blank\" rel=\"noreferrer noopener\">Detektor um\u011bl\u00e9 inteligence<\/a>, kter\u00fd ZDNet ozna\u010dil za jeden ze \u010dty\u0159 n\u00e1stroj\u016f, kter\u00e9 dos\u00e1hly p\u0159esnosti 100% - spr\u00e1vn\u011b identifikoval ka\u017edou ze stejn\u00fdch kategori\u00ed.<\/p>\n\n\n\n<p>Jasn\u011b ozna\u010dila parafr\u00e1zovan\u00fd obsah i hybridn\u00ed uk\u00e1zky.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"476\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-007-copy-1024x476.jpg\" alt=\"\" class=\"wp-image-9827\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-007-copy-1024x476.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-007-copy-300x140.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-007-copy-768x357.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-007-copy-18x8.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-007-copy.jpg 1326w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">V\u00fdhody a nev\u00fdhody<\/h2>\n\n\n\n<p>Probereme si v\u00fdhody a nev\u00fdhody detektoru Copyleaks AI:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-008-1024x576.jpg\" alt=\"\" class=\"wp-image-9828\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-008-1024x576.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-008-300x169.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-008-768x432.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-008-1536x864.jpg 1536w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-008-18x10.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-008.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">Srovn\u00e1n\u00ed Copyleaks s jin\u00fdmi platformami<\/h2>\n\n\n\n<p>Nyn\u00ed jsme se sezn\u00e1mili s aspektem p\u0159esnosti detektoru obsahu Copyleaks ai, poj\u010fme jej porovnat se \u010dty\u0159mi dal\u0161\u00edmi p\u0159edn\u00edmi n\u00e1stroji AI.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-009-1024x576.jpg\" alt=\"\" class=\"wp-image-9829\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-009-1024x576.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-009-300x169.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-009-768x432.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-009-1536x864.jpg 1536w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-009-18x10.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/copyleaks-009.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p>Pokud chcete spolehliv\u011b detekovat AI, vyzkou\u0161ejte Undetectable AI - Forbes\u016fv detektor AI s hodnocen\u00edm #1.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"636\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Detector-and-AI-Checker-1024x636.jpg\" alt=\"Pokro\u010dil\u00fd detektor a kontrola um\u011bl\u00e9 inteligence Undetectable AI\" class=\"wp-image-9386\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Detector-and-AI-Checker-1024x636.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Detector-and-AI-Checker-300x186.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Detector-and-AI-Checker-768x477.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Detector-and-AI-Checker-18x12.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Detector-and-AI-Checker.jpg 1035w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><a href=\"https:\/\/undetectable.ai\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>1 - Nedetekovateln\u00fd detektor AI<\/strong><\/a><\/p>\n\n\n\n<p>Undetectable AI nab\u00edz\u00ed v\u00fdkonn\u00fd detektor um\u011bl\u00e9 inteligence, kter\u00fd okam\u017eit\u011b zkontroluje v\u00e1\u0161 obsah ve v\u0161ech hlavn\u00edch n\u00e1stroj\u00edch pro detekci um\u011bl\u00e9 inteligence - v\u010detn\u011b CopyLeaks, GPTZero, Sapling a dal\u0161\u00edch.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nen\u00ed t\u0159eba testovat obsah na v\u00edce platform\u00e1ch zvl\u00e1\u0161\u0165.<br><\/li>\n\n\n\n<li>Z\u00edskejte jasn\u00fd a konsolidovan\u00fd p\u0159ehled o sk\u00f3re detekce AI va\u0161eho obsahu z nejlep\u0161\u00edch n\u00e1stroj\u016f v oboru b\u011bhem n\u011bkolika sekund.<br><\/li>\n\n\n\n<li>Rozhran\u00ed je navr\u017eeno pro v\u0161echny, od za\u010d\u00e1te\u010dn\u00edk\u016f a\u017e po profesion\u00e1ly, a je intuitivn\u00ed a jednoduch\u00e9, tak\u017ee se m\u016f\u017eete rychle rozhodovat.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"321\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Humanizer.jpg\" alt=\"Sn\u00edmek obrazovky n\u00e1stroje Advanced AI Humanizer z rozhran\u00ed n\u00e1stroje Undetectable AI\" class=\"wp-image-9653\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Humanizer.jpg 640w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Humanizer-300x150.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/05\/AI-Humanizer-18x9.jpg 18w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n<p><a href=\"https:\/\/undetectable.ai\/ai-humanizer\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>2 - Nezjistiteln\u00fd AI Humanizer<\/strong><\/a><\/p>\n\n\n\n<p>Krom\u011b detekce je funkce Undetectable AI vybavena inteligentn\u00edm humaniz\u00e9rem AI. Tento n\u00e1stroj:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sni\u017euje pravd\u011bpodobnost, \u017ee v\u00e1\u0161 obsah bude ozna\u010den detektory um\u011bl\u00e9 inteligence.<br><\/li>\n\n\n\n<li>Zlep\u0161uje plynulost, t\u00f3n a styl, abyste l\u00e9pe zaujali \u010dten\u00e1\u0159e.<br><\/li>\n\n\n\n<li>Je ide\u00e1ln\u00ed pro spisovatele, obchodn\u00edky, pedagogy nebo kohokoli, kdo pot\u0159ebuje p\u0159ed publikov\u00e1n\u00edm vyladit obsah generovan\u00fd um\u011blou inteligenc\u00ed.<\/li>\n<\/ul>\n\n\n\n<p>Otestujte n\u00e1\u0161 detektor um\u011bl\u00e9 inteligence a humaniz\u00e9r pomoc\u00ed widgetu n\u00ed\u017ee!<\/p>\n\n\n\n<div id=\"uai-widget\" data-affiliate-link=\"https:\/\/undetectable.ai\/?_by=hi4km\"><script>var js = document.createElement(\"script\");js.async = true;js.src = \"https:\/\/widget.undetectable.ai\/js\/widget-loader.js?t=\"+Date.now();document.getElementsByTagName(\"head\")[0].appendChild(js);<\/script><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u010cast\u00e9 dotazy o Copyleaks<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-question-1748625981896\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Je Copyleaks 100% p\u0159esn\u00fd p\u0159i detekci obsahu AI?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Ne. Laboratorn\u00ed testy ukazuj\u00ed p\u0159esnost 99,8%, ale re\u00e1ln\u00fd v\u00fdkon kles\u00e1 na p\u0159ibli\u017en\u011b 80% kv\u016fli parafr\u00e1zov\u00e1n\u00ed a okrajov\u00fdm p\u0159\u00edpad\u016fm.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1748626000789\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Dok\u00e1\u017ee Copyleaks odhalit parafr\u00e1zovan\u00e9 plagi\u00e1ty?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>N\u011bkdy. Pokud n\u011bkdo provede mal\u00e9 zm\u011bny pomoc\u00ed n\u00e1stroj\u016f, jako je <a href=\"https:\/\/undetectable.ai\/paraphrasing-tool\" target=\"_blank\" rel=\"noopener\">N\u00e1stroj pro parafr\u00e1zov\u00e1n\u00ed<\/a>, Copyleaks to obvykle zachyt\u00ed. Pokud je v\u0161ak text hodn\u011b zm\u011bn\u011bn pomoc\u00ed chyt\u0159ej\u0161\u00edch n\u00e1stroj\u016f, m\u016f\u017ee mu to uniknout.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1748626044831\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Je Copyleaks vhodn\u00fd pro studenty?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Ano, ale bu\u010fte opatrn\u00ed. N\u011bkdy se m\u016f\u017ee st\u00e1t, \u017ee je n\u011bco naps\u00e1no um\u011blou inteligenc\u00ed nebo zkop\u00edrov\u00e1no, i kdy\u017e to tak nen\u00ed. To by mohlo zp\u016fsobit probl\u00e9my ve \u0161kole, tak\u017ee je lep\u0161\u00ed si dvakr\u00e1t zkontrolovat, co to p\u00ed\u0161e.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011bre\u010dn\u00fd verdikt: M\u011bli byste pou\u017e\u00edvat Copyleaks?<\/h2>\n\n\n\n<p>Je Copyleaks p\u0159esn\u00fd?&nbsp;<\/p>\n\n\n\n<p>Odpov\u011b\u010f nen\u00ed jednoduch\u00e1 - ano nebo ne.&nbsp;<\/p>\n\n\n\n<p>Dob\u0159e rozpozn\u00e1 obsah napsan\u00fd um\u011blou inteligenc\u00ed, ale situace se komplikuje, pokud je text lehce upraven\u00fd, parafr\u00e1zovan\u00fd nebo je kombinac\u00ed lidsk\u00e9ho textu a textu napsan\u00e9ho um\u011blou inteligenc\u00ed.&nbsp;<\/p>\n\n\n\n<p>O\u0161emetn\u00e9 p\u0159\u00edpady jsou st\u00e1le \u010dast\u011bj\u0161\u00ed a h\u016f\u0159e odhaliteln\u00e9.<\/p>\n\n\n\n<p>Tak\u017ee ano. Copyleaks je st\u00e1le spolehlivou, rychlou a snadno pou\u017eitelnou mo\u017enost\u00ed pro p\u0159\u00edmo\u010darou kontrolu.<\/p>\n\n\n\n<p>Pokud v\u0161ak pot\u0159ebujete zachytit jemn\u011bj\u0161\u00ed obsah generovan\u00fd um\u011blou inteligenc\u00ed, m\u016f\u017ee b\u00fdt nedostate\u010dn\u00fd.&nbsp;<\/p>\n\n\n\n<p>V t\u011bchto situac\u00edch se hod\u00ed n\u00e1stroje jako <a href=\"https:\/\/undetectable.ai\/\" target=\"_blank\" rel=\"noreferrer noopener\">Nezjistiteln\u00e1 AI<\/a> nab\u00edzej\u00ed chyt\u0159ej\u0161\u00ed a p\u0159esn\u011bj\u0161\u00ed detekci p\u0159izp\u016fsobenou dne\u0161n\u00edmu pokro\u010dil\u00e9mu psan\u00ed s um\u011blou inteligenc\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":15,"featured_media":12377,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[34],"tags":[],"class_list":["post-9815","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-news"],"_links":{"self":[{"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/posts\/9815","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/comments?post=9815"}],"version-history":[{"count":7,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/posts\/9815\/revisions"}],"predecessor-version":[{"id":12717,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/posts\/9815\/revisions\/12717"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/media\/12377"}],"wp:attachment":[{"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/media?parent=9815"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/categories?post=9815"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/tags?post=9815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}