{"id":2630,"date":"2026-04-24T09:26:41","date_gmt":"2026-04-24T09:26:41","guid":{"rendered":"https:\/\/deepinsightai.io\/?p=2630"},"modified":"2026-04-25T06:30:31","modified_gmt":"2026-04-25T06:30:31","slug":"claude-admits-getting-dumber","status":"publish","type":"post","link":"https:\/\/deepinsightai.io\/fr\/claude-admits-getting-dumber\/","title":{"rendered":"Claude admet \u201c devenir moins intelligent \u201d : trois bugs critiques mis au jour apr\u00e8s le lancement de GPT-5.5"},"content":{"rendered":"<p>Juste au moment de la sortie de <a href=\"https:\/\/deepinsightai.io\/fr\/gpt-5-5-review\/\" target=\"_blank\" rel=\"noreferrer noopener\">GPT-5.5<\/a>, Claude l'a finalement admis :<\/p>\n\n\n\n<figure data-spectra-id=\"spectra-mocpcmrs-1ng537\" class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"570\" height=\"135\" src=\"https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-78.png\" alt=\"Claude avoue \u201c devenir de plus en plus b\u00eate \u00bb\" class=\"wp-image-2633\" srcset=\"https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-78.png 570w, https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-78-300x71.png 300w, https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-78-18x4.png 18w\" sizes=\"(max-width: 570px) 100vw, 570px\" \/><\/figure>\n\n\n\n<p>Oui, le mod\u00e8le est devenu \u201c moins performant \u201d, et tous les quotas d'utilisation ont \u00e9t\u00e9 r\u00e9initialis\u00e9s.<\/p>\n\n\n\n<p>Apr\u00e8s plus d'un mois de d\u00e9mentis, l'information confidentielle a finalement \u00e9t\u00e9 r\u00e9v\u00e9l\u00e9e directement par <a href=\"https:\/\/deepinsightai.io\/fr\/anthropics-valuation-surges-past-1-trillion\/\">Anthropique<\/a> lui-m\u00eame :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le niveau de raisonnement a \u00e9t\u00e9 discr\u00e8tement revu \u00e0 la baisse, passant de \u201c \u00e9lev\u00e9 \u201d \u00e0 \u201c moyen \u201d<\/li>\n\n\n\n<li>Un bug de mise en cache effa\u00e7ait les traces de r\u00e9flexion \u00e0 chaque tour<\/li>\n\n\n\n<li>La limite de 25 mots impos\u00e9e \u00e0 la consigne a nui \u00e0 la qualit\u00e9 du r\u00e9sultat<\/li>\n<\/ul>\n\n\n\n<p>Si l'on additionne ces trois bugs, l'exp\u00e9rience globale de Claude en a s\u00e9rieusement p\u00e2ti.<\/p>\n\n\n\n<p>Heureusement que les concurrents ont mis la pression au bon moment. Tenter de \u201c sensibiliser les utilisateurs \u201d n'allait manifestement pas fonctionner.<\/p>\n\n\n\n<p>Cela dit, corriger des bugs est toujours une bonne chose. C\u2019est juste que\u2026 le moment choisi est suspect. \u00c0 peine le GPT-5.5 est-il sorti que, tout \u00e0 coup, Claude \u201c reconna\u00eet sa d\u00e9faite \u201d.\u201d<\/p>\n\n\n\n<p>La version 5.5 a-t-elle facilit\u00e9 le d\u00e9bogage ?<\/p>\n\n\n\n<p>Dario\u2026 tu n\u2019as tout de m\u00eame pas fait expr\u00e8s d\u2019aggraver la situation de Claude juste pour pr\u00e9parer un retour en force \u00e0 l\u2019occasion du lancement de GPT-5.5, n\u2019est-ce pas ?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Trois bugs confirm\u00e9s \u00e0 l'origine de la baisse de performances de Claude<\/h2>\n\n\n\n<p>Tout d'abord, ce n'est pas la premi\u00e8re fois.<\/p>\n\n\n\n<p>En ao\u00fbt dernier, Anthropic avait publi\u00e9 une analyse r\u00e9trospective similaire concernant les versions 4.0 et 4.1 d'Opus, dans laquelle l'entreprise pr\u00e9cisait \u00e9galement : \u201c Nous n'avons jamais eu l'intention de r\u00e9duire la qualit\u00e9 du mod\u00e8le. \u201d<\/p>\n\n\n\n<p>Cette fois-ci, la nouvelle analyse r\u00e9trospective s'intitule <em>\u201c Une analyse r\u00e9trospective de trois num\u00e9ros r\u00e9cents. \u201d<\/em><\/p>\n\n\n\n<p>\u201cLe terme \u201d r\u00e9cent \u00bb est essentiel : il ne s'agit pas seulement du moment pr\u00e9sent, mais de la p\u00e9riode \u00e9coul\u00e9e.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">La communaut\u00e9 l'avait d\u00e9j\u00e0 remarqu\u00e9<\/h3>\n\n\n\n<p>L'aggravation de l'\u00e9tat de sant\u00e9 de Claude faisait l'objet de nombreuses discussions depuis un certain temps d\u00e9j\u00e0.<\/p>\n\n\n\n<p>Il y a plus de dix jours, Stella Laurenzo, directrice senior du d\u00e9partement IA chez AMD, a publi\u00e9 un audit approfondi sur GitHub :<\/p>\n\n\n\n<figure data-spectra-id=\"spectra-mocpdaju-r03hld\" class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"681\" height=\"345\" data-src=\"https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-79.png\" alt=\"Stella Laurenzo, directrice senior charg\u00e9e de l&#039;IA chez AMD, a publi\u00e9 un audit approfondi sur GitHub\" class=\"wp-image-2634 lazyload\" data-srcset=\"https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-79.png 681w, https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-79-300x152.png 300w, https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-79-18x9.png 18w\" data-sizes=\"(max-width: 681px) 100vw, 681px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 681px; --smush-placeholder-aspect-ratio: 681\/345;\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>6 852 conversations<\/li>\n\n\n\n<li>17 871 blocs de raisonnement<\/li>\n\n\n\n<li>Plus de 230 000 appels de fonction<\/li>\n<\/ul>\n\n\n\n<p>Les conclusions : depuis f\u00e9vrier, la profondeur du raisonnement a fortement diminu\u00e9.<\/p>\n\n\n\n<p>Observations plus d\u00e9taill\u00e9es :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Claude a commenc\u00e9 \u00e0 sombrer dans <strong>boucles de raisonnement<\/strong><\/li>\n\n\n\n<li>Elle a de plus en plus opt\u00e9 pour le <strong>la solution la plus simple<\/strong>, ce n'est pas le bon<\/li>\n<\/ul>\n\n\n\n<p>Par ailleurs, le test de performance BridgeBench de BridgeMind a montr\u00e9 que <a href=\"https:\/\/deepinsightai.io\/fr\/claude-opus-4-7-vs-opus-4-6\/\" target=\"_blank\" rel=\"noreferrer noopener\">Opus 4.6<\/a> pr\u00e9cision passant de 83,31 TP3T \u00e0 68,31 TP3T, et classement passant de #2 \u00e0 #10.<\/p>\n\n\n\n<figure data-spectra-id=\"spectra-mocpe4qx-d4yl2z\" class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"590\" height=\"830\" data-src=\"https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-80.png\" alt=\"Le test de performance BridgeBench de BridgeMind a montr\u00e9 que la pr\u00e9cision d\u2019Opus 4.6 \u00e9tait pass\u00e9e de 83,31 TP3T \u00e0 68,31 TP3T, son classement passant de #2 \u00e0 #10.\" class=\"wp-image-2635 lazyload\" data-srcset=\"https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-80.png 590w, https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-80-213x300.png 213w, https:\/\/deepinsightai.io\/wp-content\/uploads\/2026\/04\/image-80-9x12.png 9w\" data-sizes=\"(max-width: 590px) 100vw, 590px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 590px; --smush-placeholder-aspect-ratio: 590\/830;\" \/><\/figure>\n\n\n\n<p>M\u00eame si cette m\u00e9thodologie a ensuite fait l'objet de critiques, cette version des faits s'est impos\u00e9e :<\/p>\n\n\n\n<p>Claude devient de plus en plus b\u00eate.<\/p>\n\n\n\n<p>Les gens ont m\u00eame invent\u00e9 un terme \u2014 <strong>\u00ab Shrinkflation \u00bb li\u00e9e \u00e0 l'IA<\/strong>. M\u00eame prix, produit dilu\u00e9.<\/p>\n\n\n\n<p>En d'autres termes, les utilisateurs avaient l'impression de se voir proposer un \u201c menu enfant \u2019.\u201d<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Explication des trois bugs<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Baisse imperceptible du niveau de raisonnement<\/h3>\n\n\n\n<p>Le 4 mars, la d\u00e9faillance de Claude Code <a href=\"https:\/\/deepinsightai.io\/fr\/claude-opus-4-7-adaptive-thinking\/\" target=\"_blank\" rel=\"noreferrer noopener\">niveau de raisonnement<\/a> a \u00e9t\u00e9 ramen\u00e9 de \u201c \u00e9lev\u00e9 \u201d \u00e0 \u201c moyen \u201d en raison de probl\u00e8mes de latence.<\/p>\n\n\n\n<p>Mais l'interface utilisateur affichait toujours \u201c \u00e9lev\u00e9 \u201d.\u201d<\/p>\n\n\n\n<p>Les utilisateurs pensaient disposer de la pleine puissance, mais se sont en r\u00e9alit\u00e9 retrouv\u00e9s avec une version all\u00e9g\u00e9e.<\/p>\n\n\n\n<p>Cette mesure a dur\u00e9 plus d'un mois avant d'\u00eatre annul\u00e9e.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Plus on discute, plus \u00e7a devient stupide<\/h3>\n\n\n\n<p>Le 26 mars, une optimisation de la mise en cache a \u00e9t\u00e9 mise en place :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Objectif : effacer les anciens raisonnements apr\u00e8s 1 heure d'inactivit\u00e9<\/li>\n\n\n\n<li>R\u00e9alit\u00e9 : \u00e0 cause d'un bug, il s'est effac\u00e9 <strong>\u00e0 chaque tour<\/strong><\/li>\n<\/ul>\n\n\n\n<p>R\u00e9sultat :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Claude a continu\u00e9 \u00e0 travailler, mais a perdu de vue ses propres objectifs<\/li>\n\n\n\n<li>Sympt\u00f4mes : perte de m\u00e9moire, r\u00e9p\u00e9titions, utilisation chaotique des outils<\/li>\n<\/ul>\n\n\n\n<p>Pire encore :<\/p>\n\n\n\n<p>Comme le raisonnement \u00e9tait constamment effac\u00e9, le cache n'\u00e9tait jamais utilis\u00e9 \u2192 la consommation de jetons a explos\u00e9.<\/p>\n\n\n\n<p>Il a fallu 15 jours pour r\u00e9parer \u00e7a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Une seule ligne de commande a compromis la qualit\u00e9 de sortie<\/h3>\n\n\n\n<p>Le 16 avril, une consigne syst\u00e8me a \u00e9t\u00e9 ajout\u00e9e :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>25 mots maximum entre chaque appel d'outil<\/li>\n\n\n\n<li>R\u00e9ponse finale limit\u00e9e \u00e0 100 mots<\/li>\n<\/ul>\n\n\n\n<p>Impact :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/deepinsightai.io\/fr\/claude-opus-4-7\/\" target=\"_blank\" rel=\"noreferrer noopener\">Opus 4.6 et 4.7<\/a> les deux ont enregistr\u00e9 une baisse de performances d'environ 31 TP3T<\/li>\n\n\n\n<li>R\u00e9trograd\u00e9 au bout de 4 jours<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Avril : une s\u00e9rie de probl\u00e8mes dont on est soi-m\u00eame responsable<\/h2>\n\n\n\n<p>Si l'on examine la chronologie des \u00e9v\u00e9nements, le mois d'avril n'a pas seulement \u00e9t\u00e9 marqu\u00e9 par des bugs : il a \u00e9galement \u00e9t\u00e9 le th\u00e9\u00e2tre d'une s\u00e9rie de d\u00e9cisions discutables.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4 avril \u2014 Blocage des outils tiers<\/h3>\n\n\n\n<p>Anthropic a bloqu\u00e9 des outils tels que <a href=\"https:\/\/deepinsightai.io\/fr\/openclaw-collapse\/\" target=\"_blank\" rel=\"noreferrer noopener\">OpenClaw<\/a> li\u00e9s \u00e0 l'utilisation des abonnements Pro\/Max.<\/p>\n\n\n\n<p>Vous souhaitez continuer \u00e0 les utiliser ? Passez \u00e0 la facturation par API.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">21 avril \u2014 Modifications discr\u00e8tes des tarifs<\/h3>\n\n\n\n<p><a href=\"https:\/\/deepinsightai.io\/fr\/did-anthropic-remove-claude-code-from-pro\/\" target=\"_blank\" rel=\"noreferrer noopener\">Claude Code a \u00e9t\u00e9 supprim\u00e9<\/a> depuis la page du forfait Pro.<\/p>\n\n\n\n<p>Les documents d'aide ont \u00e9t\u00e9 modifi\u00e9s \u00e0 partir de :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201c Pro ou Max \u201d \u2192 \u201c Max uniquement \u201d<\/li>\n<\/ul>\n\n\n\n<p>Suite \u00e0 la pol\u00e9mique, Amol Avasare, responsable de la croissance, a affirm\u00e9 qu'il ne s'agissait que d'un test A\/B \u00ab 2% \u00bb.<\/p>\n\n\n\n<p>Probl\u00e8me : la modification a concern\u00e9 l'ensemble du site.<\/p>\n\n\n\n<p>La mesure a \u00e9t\u00e9 annul\u00e9e en l'espace de quelques heures.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">La r\u00e9alit\u00e9 des prix<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pro : $20\/mois \u2192 $240\/an<\/li>\n\n\n\n<li>Max. 5x : $100\/mois \u2192 $1200\/an (multipli\u00e9 par 5)<\/li>\n\n\n\n<li>Max. 20x : 1 TP 4 T 2 400\/an (multiplication par 10)<\/li>\n<\/ul>\n\n\n\n<p>Pas de niveau interm\u00e9diaire.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">23 avril \u2014 Bilan r\u00e9trospectif et \u201c indemnisation \u201d<\/h3>\n\n\n\n<p>La compensation ? Une r\u00e9initialisation des quotas d'utilisation.<\/p>\n\n\n\n<p>Certains utilisateurs ont fait remarquer :<\/p>\n\n\n\n<p>Cela s'\u00e9tait d\u00e9j\u00e0 produit lors de la sortie de la version Opus 4.7.<\/p>\n\n\n\n<p>Cette \u201c compensation \u201d n'\u00e9tait donc en fait rien d'autre qu'une simple r\u00e9initialisation du cycle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Les utilisateurs n'y croient pas<\/h2>\n\n\n\n<p>Les avis sont partag\u00e9s.<\/p>\n\n\n\n<p>Certains disent :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Des bugs, \u00e7a arrive<\/li>\n\n\n\n<li>L'analyse r\u00e9trospective est transparente<\/li>\n\n\n\n<li>Boris Cherny a r\u00e9agi activement sur Hacker News<\/li>\n<\/ul>\n\n\n\n<p>D'autres se concentrent sur une autre question :<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Deux mois de silence<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Aucune communication officielle<\/li>\n\n\n\n<li>Seules quelques r\u00e9ponses \u00e9parses sur X<\/li>\n\n\n\n<li>Manque de coh\u00e9rence dans la communication<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Soup\u00e7ons concernant l\u201c\u201d optimisation du cache \u00bb<\/h3>\n\n\n\n<p>Certains estiment que le moment choisi (qui co\u00efncide avec l'expiration du cache) laisse penser que :<\/p>\n\n\n\n<p>Il ne s'agit pas d'optimiser la latence, mais de r\u00e9duire les co\u00fbts.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">La pol\u00e9mique autour des tests A\/B<\/h3>\n\n\n\n<p>Diff\u00e9rents utilisateurs ont re\u00e7u, sans en \u00eatre inform\u00e9s, des configurations de produit diff\u00e9rentes.<\/p>\n\n\n\n<p>La confiance a subi un nouveau coup dur.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">La migration est d\u00e9j\u00e0 en cours<\/h2>\n\n\n\n<p>Une tendance int\u00e9ressante sur Hacker News :<\/p>\n\n\n\n<p>Des personnes qui racontent leurs \u201c histoires de migration \u201d.\u201d<\/p>\n\n\n\n<p>Certains ont d\u00e9clar\u00e9 avoir inconsciemment opt\u00e9 pour <a href=\"https:\/\/deepinsightai.io\/fr\/chatgpt-codex-vs-claude-code\/\" target=\"_blank\" rel=\"noreferrer noopener\">Codex<\/a> en f\u00e9vrier dernier \u2014 et ce n'est que maintenant qu'ils se rendent compte que le d\u00e9clin de Claude a peut-\u00eatre \u00e9t\u00e9 le facteur d\u00e9clencheur.<\/p>\n\n\n\n<p>D'autres affirment que GPT-5.4 surpasse d\u00e9j\u00e0 Opus 4.6.<\/p>\n\n\n\n<p>Certains prennent des compl\u00e9ments alimentaires MiniMax :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>$40 \u2192 4 500 messages par cycle de 5 heures<\/li>\n\n\n\n<li>Visibilit\u00e9 totale du raisonnement<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Le paysage a chang\u00e9<\/h2>\n\n\n\n<p>Il y a six mois, l\u2019id\u00e9e selon laquelle \u201c il fallait utiliser Claude pour le codage \u201d faisait l\u2019objet d\u2019un quasi-consensus.<\/p>\n\n\n\n<p>Maintenant :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Codex compterait 4 millions d'utilisateurs actifs<\/li>\n\n\n\n<li>GPT-5.5 se concentre sur la programmation et l'utilisation des ordinateurs<\/li>\n\n\n\n<li>Les collaborateurs d'OpenAI le d\u00e9crivent m\u00eame comme un mod\u00e8le de \u201c chef de cabinet \u201d<\/li>\n<\/ul>\n\n\n\n<p>L'\u00e9tat de Claude ne s'est pas forc\u00e9ment aggrav\u00e9.<\/p>\n\n\n\n<p>D'autres se sont am\u00e9lior\u00e9s\u2026 et Claude a tr\u00e9buch\u00e9 au pire moment qui soit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">La fen\u00eatre r\u00e9tr\u00e9cit<\/h2>\n\n\n\n<p>Anthropic dispose d\u00e9sormais de moins de temps qu'auparavant pour :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Corriger les bugs<\/li>\n\n\n\n<li>R\u00e9tablir la confiance<\/li>\n<\/ul>\n\n\n\n<p>En attendant :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GPT-5.5 est d\u00e9j\u00e0 disponible<\/li>\n\n\n\n<li><a href=\"https:\/\/deepinsightai.io\/fr\/deepseek-v4\/\" target=\"_blank\" rel=\"noreferrer noopener\">DeepSeek V4<\/a> est pr\u00eat<\/li>\n<\/ul>\n\n\n\n<p>Et les gens attendent :<\/p>\n\n\n\n<p>G\u00e9meaux, \u00e0 toi de jouer.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Right around the release of GPT-5.5, Claude finally admitted it: Yes, the model got \u201cdumber,\u201d and all usage quotas have been reset. After over a month of denial, the intelligence drop bug finally came straight from Anthropic itself: Stack those three bugs together, and Claude\u2019s overall experience took a serious hit. Good thing competitors applied [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2636,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"%%post_title%%","_seopress_titles_desc":"Anthropic confirms Claude\u2019s performance drop caused by 3 major bugs\u2014reasoning downgrade, cache failure, and prompt limits. Full breakdown, timeline, and user backlash after GPT-5.5 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