{"id":15730,"date":"2026-10-30T13:18:32","date_gmt":"2026-10-30T12:18:32","guid":{"rendered":"https:\/\/dailyai.com\/?p=15730"},"modified":"2026-10-30T13:18:32","modified_gmt":"2026-10-30T12:18:32","slug":"mistral-gives-away-a-trillion-parameter-ai-as-google-locks-its-own-up","status":"publish","type":"post","link":"https:\/\/dailyai.com\/fr\/2026\/10\/mistral-gives-away-a-trillion-parameter-ai-as-google-locks-its-own-up\/","title":{"rendered":"Mistral d\u00e9voile une IA \u00e0 mille milliards de param\u00e8tres tandis que Google verrouille la sienne."},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>Ce chiffre est d&#039;un billion. C&#039;est le nombre de param\u00e8tres, les r\u00e9glages internes qu&#039;une IA apprend lors de son entra\u00eenement, contenus dans Mistral Large 4, le mod\u00e8le que l&#039;entreprise fran\u00e7aise a mis gratuitement \u00e0 disposition le 29 octobre. La m\u00eame semaine, Google annon\u00e7ait que son mod\u00e8le le plus performant en cybers\u00e9curit\u00e9 serait initialement r\u00e9serv\u00e9 aux experts en s\u00e9curit\u00e9 agr\u00e9\u00e9s. Deux des projets d&#039;IA les plus financ\u00e9s divergent d\u00e9sormais, et l&#039;\u00e9cart entre eux est crucial pour tous ceux qui utilisent, ach\u00e8tent ou s&#039;inqui\u00e8tent de l&#039;IA.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ce que Mistral a publi\u00e9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mistral a pr\u00e9sent\u00e9 pour la premi\u00e8re fois Large 4, surnomm\u00e9 \u201c Le Chonk \u201d, en avant-premi\u00e8re payante le 6 octobre et <a href=\"https:\/\/mistral.ai\/news\/mistral-large-4\/\" target=\"_blank\" rel=\"noopener\">on m&#039;a promis les poids d&#039;ici la fin du mois<\/a>. C&#039;est maintenant le cas <a href=\"https:\/\/mistral.ai\/news\/mistral-large-4-oss\/\" target=\"_blank\" rel=\"noopener\">les ont publi\u00e9s<\/a>. Les poids constituent le mod\u00e8le entra\u00een\u00e9 lui-m\u00eame, le fichier qui transforme une question en r\u00e9ponse. Leur mise \u00e0 disposition permet \u00e0 toute personne disposant d&#039;un nombre suffisant d&#039;ordinateurs d&#039;ex\u00e9cuter le mod\u00e8le sur sa propre machine au lieu de le louer sur le site web de Mistral.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les <a href=\"https:\/\/huggingface.co\/mistralai\/Mistral-Large-4-1T-A52B\" target=\"_blank\" rel=\"noopener\">carte de mod\u00e8le sur Hugging Face<\/a> L&#039;\u00e9chelle est donn\u00e9e par le terme \u00ab\u00a0\u00e9chelle\u00a0\u00bb. Large 4 poss\u00e8de environ 1\u00a0000 milliards de param\u00e8tres au total, mais n&#039;en utilise que 52 milliards pour chaque mot qu&#039;il traite. Cette conception, dite \u00ab\u00a0m\u00e9lange d&#039;experts\u00a0\u00bb, divise le mod\u00e8le en modules sp\u00e9cialis\u00e9s et n&#039;en active que quelques-uns \u00e0 la fois. Cela permet de maintenir les co\u00fbts d&#039;ex\u00e9cution bien en de\u00e7\u00e0 de ce que sa taille apparente pourrait laisser supposer. Le mod\u00e8le lit le texte et les images, peut g\u00e9rer simultan\u00e9ment environ un million de jetons (soit environ 750\u00a0000 mots) et, selon Mistral, il ma\u00eetrise plus de 160 langues. Il a \u00e9t\u00e9 entra\u00een\u00e9 de z\u00e9ro sur 3\u00a0800 puces Nvidia Grace Blackwell dans les centres de donn\u00e9es de Mistral en Europe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mistral a \u00e9galement baiss\u00e9 ses tarifs. L&#039;utilisation du mod\u00e8le via son propre service co\u00fbte d\u00e9sormais $0,70 par million de jetons en entr\u00e9e et $2,10 par million de jetons en sortie. Un jeton correspond \u00e0 un segment de texte, soit environ les trois quarts d&#039;un mot.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C&#039;est bon ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">D&#039;apr\u00e8s l&#039;analyse des performances de Mistral, il s&#039;agit du meilleur mod\u00e8le ouvert pour le codage. Sur l&#039;indice ANACO (Artificial Analysis Coding Agent Index), un test ind\u00e9pendant d&#039;assistants de codage IA, il obtient un score de 48%. Ce score est quasiment \u00e9quivalent \u00e0 celui de GLM-5.3, un mod\u00e8le ouvert chinois, tout en utilisant 47% jetons de moins par t\u00e2che., <a href=\"https:\/\/mistral.ai\/news\/mistral-large-4-oss\/\" target=\"_blank\" rel=\"noopener\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">Mistral<\/span><\/span> dit<\/a>. Moins de jetons signifie une facture moins \u00e9lev\u00e9e pour un m\u00eame travail. Sur Terminal-Bench 4.0, un test simulant l&#039;utilisation de la ligne de commande, le nombre de jetons a augment\u00e9 de 13 points de pourcentage pour atteindre 41% au cours des trois semaines suivant la publication de la version pr\u00e9liminaire.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le tableau d&#039;ensemble est plus modeste. Sur l&#039;indice plus large d&#039;intelligence artificielle, les 4 grandes entreprises obtiennent un score de 26, selon leur <a href=\"https:\/\/huggingface.co\/mistralai\/Mistral-Large-4-1T-A52B\" target=\"_blank\" rel=\"noopener\">carte mod\u00e8le<\/a>. Mistral affirme qu&#039;il s&#039;agit du meilleur score parmi les smartphones occidentaux \u00e0 \u00e9cran ouvert, tout en reconnaissant que les mod\u00e8les chinois haut de gamme obtiennent de meilleurs r\u00e9sultats. Le nouveau Gemini 4 Carbon de Google. <a href=\"https:\/\/blog.google\/innovation-and-ai\/models-and-research\/gemini-models\/introducing-gemini-4-carbon\/\" target=\"_blank\" rel=\"noopener\">obtient un score de 59 sur le m\u00eame indice<\/a>, la meilleure note. En clair, le mod\u00e8le europ\u00e9en gratuit est performant pour un mod\u00e8le que l&#039;on peut poss\u00e9der, mais il est loin d&#039;\u00e9galer les meilleurs mod\u00e8les propri\u00e9taires en termes de performances g\u00e9n\u00e9rales.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Le pari sur la cybers\u00e9curit\u00e9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La diff\u00e9rence la plus marquante cette semaine concerne la cybers\u00e9curit\u00e9. Mistral pr\u00e9sente Large 4 comme un outil destin\u00e9 aux \u00e9quipes de d\u00e9fense, celles qui d\u00e9tectent et corrigent les failles logicielles avant les cybercriminels. Il obtient un score de 51% \u00e0 l&#039;indice d&#039;analyse artificielle de cybers\u00e9curit\u00e9 (IAC), qui teste la capacit\u00e9 d&#039;un mod\u00e8le \u00e0 identifier une faille dans un code, \u00e0 prouver son existence et \u00e0 la corriger sans provoquer de dysfonctionnement. Mistral affirme \u00e9galement que le mod\u00e8le a bloqu\u00e9 96,6% de requ\u00eates malveillantes lors de tests de s\u00e9curit\u00e9 standard, soit le meilleur score enregistr\u00e9 parmi les mod\u00e8les ouverts.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pierre Stock, vice-pr\u00e9sident scientifique de Mistral, a expliqu\u00e9 le raisonnement \u00e0 <a href=\"https:\/\/techcrunch.com\/2026\/10\/29\/mistral-releases-weights-for-its-trillion-parameter-ai-model-targeting-cybersecurity\/\" target=\"_blank\" rel=\"noopener\">TechCrunch<\/a>. \u201c Les gouvernements et les entreprises, a-t-il d\u00e9clar\u00e9, b\u00e9n\u00e9ficient d&#039;un acc\u00e8s aux renseignements de pointe leur permettant de se d\u00e9fendre contre les cyberattaques. Un acc\u00e8s qui, par d\u00e9finition, ne peut \u00eatre interrompu, car le mod\u00e8le est ouvert et pond\u00e9r\u00e9. \u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Google a opt\u00e9 pour la voie inverse avec Gemini 4 Carbon., <a href=\"https:\/\/blog.google\/innovation-and-ai\/models-and-research\/gemini-models\/introducing-gemini-4-carbon\/\" target=\"_blank\" rel=\"noopener\">annonc\u00e9 le 28 octobre<\/a>. Google qualifie Carbon de son mod\u00e8le le plus performant, offrant des r\u00e9sultats de pointe en mati\u00e8re de d\u00e9tection, d&#039;exploitation et de correction des failles logicielles. Plut\u00f4t que de le diffuser largement, Google le confie d&#039;abord \u00e0 un petit groupe de sp\u00e9cialistes en cybers\u00e9curit\u00e9, puis \u00e0 des partenaires plus fiables via un syst\u00e8me d&#039;acc\u00e8s contr\u00f4l\u00e9. Les d\u00e9veloppeurs et le grand public y auront acc\u00e8s ult\u00e9rieurement, une fois que Google aura test\u00e9 ses m\u00e9canismes de s\u00e9curit\u00e9. Anthropic a fait preuve d&#039;une prudence similaire avec un autre mod\u00e8le. <a href=\"https:\/\/dailyai.com\/fr\/2026\/10\/anthropics-unreleased-claude-hacked-chrome-safari-and-linux-in-tests\/\">in\u00e9dit <span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">Claude<\/span><\/span> mod\u00e8le qui a fait irruption <span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">Chrome<\/span><\/span>, Safari et Linux dans les tests<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La crainte derri\u00e8re cette prudence est simple\u00a0: un mod\u00e8le capable de d\u00e9celer les failles peut \u00eatre utilis\u00e9 aussi bien pour attaquer que pour se d\u00e9fendre. Mistral ne l\u2019ignore pas. Dans son <a href=\"https:\/\/mistral.ai\/news\/mistral-large-4-oss\/\" target=\"_blank\" rel=\"noopener\">publication<\/a> L&#039;entreprise indique avoir observ\u00e9 l&#039;utilisation de la version pr\u00e9liminaire et, bien que le mod\u00e8le ait refus\u00e9 d&#039;attaquer des cibles r\u00e9elles, elle a constat\u00e9 \u201c\u00a0un potentiel d&#039;am\u00e9lioration pour mener de v\u00e9ritables attaques\u00a0\u201d. Elle pr\u00e9cise qu&#039;elle renforce ses mesures de s\u00e9curit\u00e9 en cons\u00e9quence. Une version cybern\u00e9tique plus performante de Large 4 sera uniquement propos\u00e9e \u00e0 des partenaires agr\u00e9\u00e9s, tels qu&#039;Orange Cyberdefense, dans le cadre d&#039;un contrat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Voici le probl\u00e8me avec les poids libres\u00a0: les garde-fous sur le site web de Mistral peuvent \u00eatre mis \u00e0 jour \u00e0 tout moment. Ceux int\u00e9gr\u00e9s \u00e0 un mod\u00e8le t\u00e9l\u00e9charg\u00e9 sont fixes une fois le fichier export\u00e9, et un utilisateur d\u00e9termin\u00e9 peut tenter de les contourner. Mistral estime que fournir cet outil aux d\u00e9fenseurs plus t\u00f4t est plus avantageux que le risque qu&#039;il soit \u00e9galement utilis\u00e9 par des attaquants.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qui peut r\u00e9ellement le g\u00e9rer ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u201c T\u00e9l\u00e9chargement gratuit \u201d ne signifie pas que n&#039;importe qui peut l&#039;utiliser \u00e0 domicile. Consultez le guide d&#039;installation de Mistral sur le site web de Mistral. <a href=\"https:\/\/huggingface.co\/mistralai\/Mistral-Large-4-1T-A52B\" target=\"_blank\" rel=\"noopener\">carte mod\u00e8le<\/a> Le mod\u00e8le est ex\u00e9cut\u00e9 sur huit puces graphiques haut de gamme fonctionnant de concert. \u00c0 titre de comparaison, le mod\u00e8le ouvert l\u00e9g\u00e8rement plus petit de Meta, Muse Spark Open, n\u00e9cessite environ 537 Go d&#039;espace de stockage rien que pour ses poids compress\u00e9s., <a href=\"https:\/\/dev.meta.ai\/docs\/muse-spark-open\/get-the-model\" target=\"_blank\" rel=\"noopener\">Meta dit<\/a>, sans compter la m\u00e9moire suppl\u00e9mentaire n\u00e9cessaire \u00e0 son fonctionnement. Cela d\u00e9passe largement les capacit\u00e9s d&#039;un ordinateur portable ou d&#039;un PC de jeu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les v\u00e9ritables clients sont donc les banques, les gouvernements, les op\u00e9rateurs t\u00e9l\u00e9coms et les grandes entreprises. Le communiqu\u00e9 de lancement de Mistral cite La Banque Postale, ABN AMRO, Belfius et le laboratoire \u03a6 de l&#039;Agence spatiale europ\u00e9enne parmi les organisations soutenant le mod\u00e8le. Pour elles, l&#039;attrait r\u00e9side dans le contr\u00f4le. Leurs donn\u00e9es restent sur leurs propres serveurs et aucun fournisseur \u00e9tranger ne peut d\u00e9sactiver ou modifier le mod\u00e8le du jour au lendemain. Les Europ\u00e9ens appellent cela une IA souveraine.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Il y a une seule condition. <a href=\"https:\/\/huggingface.co\/mistralai\/Mistral-Large-4-1T-A52B\/raw\/main\/LICENSE\" target=\"_blank\" rel=\"noopener\">licence<\/a> Il s&#039;agit d&#039;une version modifi\u00e9e de la licence MIT, une licence de logiciel libre courante. N&#039;importe qui peut utiliser, modifier et vendre des produits bas\u00e9s sur ce mod\u00e8le, mais une entreprise qui revend l&#039;acc\u00e8s \u00e0 ce produit en tant que service en ligne doit obtenir une licence commerciale distincte aupr\u00e8s de Mistral. Cela emp\u00eache une entreprise concurrente de se contenter d&#039;h\u00e9berger le travail de Mistral et de pratiquer des prix inf\u00e9rieurs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ce que cela signifie pour les utilisateurs ordinaires<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La plupart des gens ne t\u00e9l\u00e9chargeront jamais Large 4. Ils peuvent n\u00e9anmoins y \u00eatre confront\u00e9s. Si une banque, un organisme gouvernemental ou un d\u00e9veloppeur d&#039;applications utilise un mod\u00e8le ouvert qu&#039;il h\u00e9berge lui-m\u00eame, vos donn\u00e9es ne quitteront peut-\u00eatre jamais les serveurs de cette organisation. Cela repr\u00e9sente une r\u00e9elle diff\u00e9rence en mati\u00e8re de confidentialit\u00e9 par rapport \u00e0 l&#039;envoi de chaque question \u00e0 une entreprise am\u00e9ricaine ou chinoise.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les mod\u00e8les ouverts plafonnent \u00e9galement les prix. Lorsqu&#039;un mod\u00e8le performant est disponible pour le co\u00fbt du mat\u00e9riel, les fournisseurs de solutions ferm\u00e9es ont plus de mal \u00e0 facturer davantage pour un travail similaire. Carbon co\u00fbtera $2 par million de jetons d&#039;entr\u00e9e et $10 par million de jetons de sortie \u00e0 son prix de lancement., <a href=\"https:\/\/blog.google\/innovation-and-ai\/models-and-research\/gemini-models\/introducing-gemini-4-carbon\/\" target=\"_blank\" rel=\"noopener\">Google dit<\/a>, puis $4 et $20. Le mod\u00e8le 4 est bien moins cher, mais aussi moins performant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Et la course \u00e0 l&#039;open source est d\u00e9sormais mondiale. Les mod\u00e8les open source les plus performants proviennent majoritairement de Chine, o\u00f9 des laboratoires ont \u00e9galement \u00e9t\u00e9 confront\u00e9s \u00e0 des accusations selon lesquelles\u2026 <a href=\"https:\/\/dailyai.com\/fr\/2026\/10\/deepseek-and-moonshot-used-gpt-6-astra-to-train-models-report-says\/\">entra\u00een\u00e9 sur les r\u00e9sultats de <span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">US<\/span><\/span> Mod\u00e8les<\/a>. La sortie de Mistral offre \u00e0 l&#039;Europe une entr\u00e9e cr\u00e9dible, et le Muse Spark Open de Meta, sorti mi-octobre, en offre une aux \u00c9tats-Unis.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Que regarder<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trois \u00e9l\u00e9ments permettront de d\u00e9terminer si le pari de Mistral est gagnant. Premi\u00e8rement, le rapport technique complet promis, qui permettra aux tiers de v\u00e9rifier ses affirmations concernant ses performances. Deuxi\u00e8mement, tout signe d&#039;utilisation de Large 4 par des cybercriminels lors d&#039;attaques r\u00e9elles, ce qui conforterait l&#039;approche plus prudente de Google. Troisi\u00e8mement, l&#039;adoption. Si les banques et les gouvernements europ\u00e9ens transf\u00e8rent leurs activit\u00e9s sur un mod\u00e8le qu&#039;ils h\u00e9bergent eux-m\u00eames, l&#039;ouverture des pond\u00e9rations cessera d&#039;\u00eatre un principe et deviendra une r\u00e9alit\u00e9 commerciale.<\/p>","protected":false},"excerpt":{"rendered":"<p>Mistral a publi\u00e9 les pond\u00e9rations de Large 4, un mod\u00e8le \u00e0 1\u00a0000 milliards de param\u00e8tres t\u00e9l\u00e9chargeable par tous, tandis que Google r\u00e9serve son mod\u00e8le de cybers\u00e9curit\u00e9 de pointe aux experts en s\u00e9curit\u00e9 agr\u00e9\u00e9s. Quelles sont les implications de cette publication et qui peut r\u00e9ellement l&#039;utiliser\u00a0?.<\/p>","protected":false},"author":16,"featured_media":15731,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-15730","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mistral Large 4 Open Weights: What a Free 1T Model Means<\/title>\n<meta name=\"description\" content=\"Mistral Large 4, a 1-trillion-parameter AI model, is now free to download. What open weights mean, how it compares with Gemini 4 Carbon, and the risk.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dailyai.com\/fr\/2026\/10\/mistral-gives-away-a-trillion-parameter-ai-as-google-locks-its-own-up\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mistral Large 4 Open Weights: What a Free 1T Model Means\" \/>\n<meta property=\"og:description\" content=\"Mistral Large 4, a 1-trillion-parameter AI model, is now free to download. 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