{"id":1560,"date":"2026-11-10T10:00:41","date_gmt":"2026-11-10T09:00:49","guid":{"rendered":"https:\/\/chatx.ai\/blog\/?p=1560"},"modified":"2026-11-10T09:00:46","modified_gmt":"2026-11-10T09:00:46","slug":"claude-fable-5-2","status":"publish","type":"post","link":"https:\/\/chatx.ai\/blog\/fr\/claude-fable-5-2\/","title":{"rendered":"Claude Fable 5.2\u00a0: notre test complet face \u00e0 Fable 5.1"},"content":{"rendered":"<p class=\"intro\">Anthropic a lanc\u00e9 Claude Fable 5.2 le 9\u00a0novembre 2026. Son mod\u00e8le haut de gamme promet des r\u00e9ponses jusqu\u2019\u00e0 30\u202f% plus rapides et co\u00fbte environ 20\u202f% de moins que Fable 5.1. Sur ChatX, Fable 5.2 remplace l\u2019ancienne version. Nous avons soumis les deux versions aux m\u00eames t\u00e2ches et recalcul\u00e9 combien de tokens co\u00fbte d\u00e9sormais une r\u00e9ponse.<\/p>\n<nav class=\"toc\">\n<ul>\n<li><a href=\"#neu\">Ce que promet Anthropic<\/a><\/li>\n<li><a href=\"#benchmarks\">Les principaux benchmarks<\/a><\/li>\n<li><a href=\"#test\">Notre test\u00a0: 5.1 contre 5.2<\/a><\/li>\n<li><a href=\"#kosten\">Combien co\u00fbte une r\u00e9ponse sur ChatX<\/a><\/li>\n<li><a href=\"#tipps\">Quel niveau de r\u00e9flexion choisir<\/a><\/li>\n<\/ul>\n<\/nav>\n<h2 id=\"neu\">Ce que promet Anthropic<\/h2>\n<p>Chez Anthropic, Fable est la gamme r\u00e9serv\u00e9e aux t\u00e2ches les plus exigeantes, comme les longues analyses, le code complexe ou les raisonnements en plusieurs \u00e9tapes. Selon Anthropic, la version 5.2 progresse surtout en programmation, sur les t\u00e2ches scientifiques et dans la lecture de graphiques. Les testeurs auraient obtenu des r\u00e9ponses jusqu\u2019\u00e0 30\u202f% plus rapides qu\u2019avec Fable 5.1. Le prix baisse en outre d\u2019un cinqui\u00e8me, en entr\u00e9e comme en sortie.<\/p>\n<p>Une exp\u00e9rience d\u2019Anthropic donne la mesure du mod\u00e8le. Un ensemble de 1\u202f000\u00a0instances de Fable a enti\u00e8rement formalis\u00e9 la d\u00e9monstration du dernier th\u00e9or\u00e8me de Fermat en 30\u00a0heures, c\u2019est-\u00e0-dire qu\u2019il l\u2019a r\u00e9dig\u00e9e pas \u00e0 pas sous une forme v\u00e9rifiable par une machine. Un mod\u00e8le ant\u00e9rieur, jamais publi\u00e9, avait mis onze jours pour y parvenir.<\/p>\n<p>Fable r\u00e9fl\u00e9chit avant chaque r\u00e9ponse, il n\u2019existe pas de mode sans r\u00e9flexion. Sur ChatX, vous r\u00e9glez la profondeur de cette r\u00e9flexion avec les niveaux <strong>Faible<\/strong>, <strong>Moyen<\/strong> et <strong>\u00c9lev\u00e9<\/strong>. ChatX n\u2019affiche pas les \u00e9tapes de r\u00e9flexion elles-m\u00eames, elles sont seulement prises en compte dans le d\u00e9compte des tokens.<\/p>\n<h2 id=\"benchmarks\">Les principaux benchmarks<\/h2>\n<p>Les chiffres proviennent d\u2019Anthropic. Claude Opus 5.5, lui aussi disponible sur ChatX, figure \u00e0 titre de comparaison.<\/p>\n<table style=\"width: 100%;border-collapse: collapse;text-align: left\" border=\"1\" cellpadding=\"10\">\n<thead style=\"background-color: #f0f0f0\">\n<tr>\n<th scope=\"col\" style=\"text-align: left\">Test<\/th>\n<th scope=\"col\" style=\"text-align: left\">Fable 5.2<\/th>\n<th scope=\"col\" style=\"text-align: left\">Fable 5.1<\/th>\n<th scope=\"col\" style=\"text-align: left\">Opus 5.5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\">Programmation (FrontierSWE v2)<\/td>\n<td style=\"text-align: left\">69,9\u202f%<\/td>\n<td style=\"text-align: left\">56,3\u202f%<\/td>\n<td style=\"text-align: left\">62,3\u202f%<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">T\u00e2ches scientifiques (Terminal-Bench-Science)<\/td>\n<td style=\"text-align: left\">74,6\u202f%<\/td>\n<td style=\"text-align: left\">52,6\u202f%<\/td>\n<td style=\"text-align: left\">58,7\u202f%<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Questions d\u2019experts (Humanity&#8217;s Last Exam, avec outils)<\/td>\n<td style=\"text-align: left\">74,2\u202f%<\/td>\n<td style=\"text-align: left\">65,6\u202f%<\/td>\n<td style=\"text-align: left\">67,7\u202f%<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">Lecture de graphiques (Chartography)<\/td>\n<td style=\"text-align: left\">73,4\u202f%<\/td>\n<td style=\"text-align: left\">44,8\u202f%<\/td>\n<td style=\"text-align: left\">64,4\u202f%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>C\u2019est sur les graphiques que le bond est le plus net. Si vous importez une image avec des courbes ou des barres, Fable 5.2 en lit les valeurs bien plus fiablement que son pr\u00e9d\u00e9cesseur.<\/p>\n<h2 id=\"test\">Notre test\u00a0: 5.1 contre 5.2<\/h2>\n<p>Le 10\u00a0novembre, nous avons soumis aux deux mod\u00e8les trois t\u00e2ches courantes, un probl\u00e8me de calcul avec deux trains, un court e-mail au propri\u00e9taire et une fonction PHP de v\u00e9rification d\u2019IBAN. Les temps indiqu\u00e9s sont des moyennes sur trois essais au niveau Moyen. La t\u00e2che de code a \u00e9t\u00e9 lanc\u00e9e une fois au niveau \u00c9lev\u00e9.<\/p>\n<table style=\"width: 100%;border-collapse: collapse;text-align: left\" border=\"1\" cellpadding=\"10\">\n<thead style=\"background-color: #f0f0f0\">\n<tr>\n<th scope=\"col\" style=\"text-align: left\">T\u00e2che<\/th>\n<th scope=\"col\" style=\"text-align: left\">Fable 5.1<\/th>\n<th scope=\"col\" style=\"text-align: left\">Fable 5.2<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left\">Probl\u00e8me de calcul<\/td>\n<td style=\"text-align: left\">10,7\u00a0secondes, environ 11\u202f100\u00a0tokens<\/td>\n<td style=\"text-align: left\">6,8\u00a0secondes, environ 5\u202f100\u00a0tokens<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">E-mail au propri\u00e9taire<\/td>\n<td style=\"text-align: left\">5,4\u00a0secondes, environ 4\u202f100\u00a0tokens<\/td>\n<td style=\"text-align: left\">4,4\u00a0secondes, environ 3\u202f600\u00a0tokens<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left\">V\u00e9rification d\u2019IBAN en PHP<\/td>\n<td style=\"text-align: left\">8,4\u00a0secondes, environ 8\u202f000\u00a0tokens<\/td>\n<td style=\"text-align: left\">13,7\u00a0secondes, environ 13\u202f000\u00a0tokens<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Pour le probl\u00e8me de calcul et l\u2019e-mail, Fable 5.2 a \u00e9t\u00e9 nettement plus rapide. Sur le calcul, il est arriv\u00e9 au m\u00eame bon r\u00e9sultat avec \u00e0 peine la moiti\u00e9 des tokens. Pour le code, en revanche, il a r\u00e9fl\u00e9chi plus longtemps et \u00e9crit une v\u00e9rification un peu plus pouss\u00e9e. Les deux fonctions \u00e9taient correctes.<\/p>\n<p>L\u2019\u00e9cart le plus net est apparu au niveau Faible. Fable 5.1 s\u2019est tromp\u00e9 dans son calcul et a abouti \u00e0 10:04. Fable 5.2 a donn\u00e9 l\u00e0 aussi le bon r\u00e9sultat, 10:11, avec la v\u00e9rification \u00e0 l\u2019appui.<\/p>\n<h2 id=\"kosten\">Combien co\u00fbte une r\u00e9ponse sur ChatX<\/h2>\n<p>ChatX facture selon les co\u00fbts r\u00e9els chez le fournisseur. Comme Fable 5.2 est moins cher, le prix baisse automatiquement. Une r\u00e9ponse typique, avec une question courte et une r\u00e9ponse d\u2019environ 500\u00a0mots, co\u00fbte d\u00e9sormais environ 7\u202f300\u00a0tokens, contre environ 9\u202f100\u00a0tokens auparavant. La r\u00e9flexion est compt\u00e9e elle aussi. Au niveau \u00c9lev\u00e9, Fable r\u00e9fl\u00e9chit presque toujours longuement, au niveau Faible beaucoup moins.<\/p>\n<p>Fable 5.2 est accessible sur ChatX avec un compte gratuit. Les tokens sont pr\u00e9lev\u00e9s sur votre cr\u00e9dit quotidien, votre abonnement ou les packs que vous avez achet\u00e9s.<\/p>\n<h2 id=\"tipps\">Quel niveau de r\u00e9flexion choisir<\/h2>\n<ul>\n<li><strong>Faible\u00a0:<\/strong> pour les textes, les e-mails et les r\u00e9sum\u00e9s. Lors du test, 5.2 s\u2019est montr\u00e9 fiable m\u00eame sur un probl\u00e8me de calcul \u00e0 ce niveau.<\/li>\n<li><strong>Moyen\u00a0:<\/strong> pour les analyses, les comparaisons et les calculs d\u00e9taill\u00e9s. C\u2019est l\u00e0 que le gain de temps par rapport \u00e0 5.1 \u00e9tait le plus important.<\/li>\n<li><strong>\u00c9lev\u00e9\u00a0:<\/strong> pour le code difficile et les longs documents. Attendez-vous \u00e0 des r\u00e9ponses plus longues et \u00e0 davantage de tokens.<\/li>\n<\/ul>\n<p>Pour les questions du quotidien, Claude Sonnet 5 ou Opus 5.5, moins chers, suffisent g\u00e9n\u00e9ralement. Fable 5.2 donne toute sa mesure quand une t\u00e2che est vraiment difficile ou qu\u2019il faut analyser un graphique.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anthropic a lanc\u00e9 Claude Fable 5.2 le 9\u00a0novembre 2026. Son mod\u00e8le haut de gamme promet des r\u00e9ponses jusqu\u2019\u00e0 30\u202f% plus rapides et co\u00fbte environ 20\u202f% de moins que Fable 5.1. Sur ChatX, Fable 5.2 remplace l\u2019ancienne version. Nous avons soumis les deux versions aux m\u00eames t\u00e2ches et recalcul\u00e9 combien de tokens co\u00fbte d\u00e9sormais une r\u00e9ponse. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1554,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[641],"tags":[],"class_list":["post-1560","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-claude"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Claude Fable 5.2\u00a0: notre test complet face \u00e0 Fable 5.1 - ChatX Blog<\/title>\n<meta name=\"description\" content=\"Claude Fable 5.2 test\u00e9 sur ChatX\u00a0: ce que le nouveau mod\u00e8le fait mieux, comment il se compare \u00e0 Fable 5.1 et combien de tokens co\u00fbte une r\u00e9ponse.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chatx.ai\/blog\/fr\/claude-fable-5-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Claude Fable 5.2\u00a0: notre test complet face \u00e0 Fable 5.1 - 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