{"id":196995,"date":"2026-07-07T07:56:00","date_gmt":"2026-07-07T06:56:00","guid":{"rendered":"https:\/\/cms-articles.softonic.io\/fr\/?p=196995"},"modified":"2026-07-07T07:57:49","modified_gmt":"2026-07-07T06:57:49","slug":"tencent-lance-hy3-en-open-source-295-milliards-de-parametres-mais-21-milliards-actives","status":"publish","type":"post","link":"https:\/\/cms-articles.softonic.io\/fr\/tencent-lance-hy3-en-open-source-295-milliards-de-parametres-mais-21-milliards-actives\/","title":{"rendered":"Tencent lance Hy3 en open source : 295 milliards de param\u00e8tres, mais 21 milliards activ\u00e9s"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Tencent a publi\u00e9 <strong>Hy3<\/strong>, son grand mod\u00e8le de langage, en <a href=\"https:\/\/fr.softonic.com\/articles\/la-chine-detruit-lia-des-etats-unis-avec-un-seul-detail-en-rendant-son-ia-open-source\" rel=\"noopener\">open source<\/a> sous licence Apache 2.0. Le groupe chinois met en ligne les poids du mod\u00e8le, et ce n\u2019est pas un d\u00e9tail : pour les d\u00e9veloppeurs comme pour les entreprises, \u00e7a ouvre la porte \u00e0 un usage commercial, \u00e0 des modifications et \u00e0 de la redistribution partout dans le monde, sans d\u00e9pendre d\u2019un acc\u00e8s ferm\u00e9 ou brid\u00e9 \u00e0 ses services.<\/p>\n\n<p class=\"wp-block-paragraph\">Sur le plan technique, Hy3 compte <strong>295 milliards<\/strong> de param\u00e8tres, mais n\u2019en active qu\u2019environ 21 milliards \u00e0 chaque requ\u00eate. Tencent s\u2019appuie ici sur une architecture de type \u00ab Mixture-of-Experts \u00bb, cens\u00e9e mieux \u00e9quilibrer la puissance du mod\u00e8le, le co\u00fbt de l\u2019inf\u00e9rence et les contraintes de d\u00e9ploiement.<\/p>\n\n<p class=\"wp-block-paragraph\">La soci\u00e9t\u00e9 pr\u00e9sente cette version finale comme une vraie mont\u00e9e en gamme par rapport \u00e0 la pr\u00e9version diffus\u00e9e en avril. Trois points sont mis en avant : une meilleure stabilit\u00e9, des co\u00fbts mieux tenus et des <strong><a href=\"https:\/\/fr.softonic.com\/articles\/un-laboratoire-chinois-presente-un-modele-dia-de-raisonnement-capable-de-rivaliser-avec-openai\" rel=\"noopener\">performances globales<\/a><\/strong> en hausse. Tencent dit avoir r\u00e9cup\u00e9r\u00e9 les retours de plus de 50 \u00e9quipes internes avant d\u2019aboutir \u00e0 une mouture pens\u00e9e pour des usages concrets, pas juste pour bien figurer dans les benchmarks.<\/p>\n\n<p class=\"wp-block-paragraph\">Autre \u00e9l\u00e9ment mis en avant, la <strong>fen\u00eatre de contexte<\/strong> de 256 000 tokens. En pratique, le mod\u00e8le peut ing\u00e9rer d\u2019un seul coup de tr\u00e8s gros volumes de texte : documents longs, historiques de conversation \u00e9tendus, workflows en plusieurs \u00e9tapes ou bases de connaissances plus volumineuses.<\/p>\n\n<p class=\"wp-block-paragraph\">Pour des usages grand public aussi bien que professionnels, \u00e7a change pas mal de choses. Le mod\u00e8le peut garder davantage de m\u00e9moire au fil d\u2019un \u00e9change, r\u00e9sumer de longs rapports et travailler \u00e0 partir de plusieurs sources sans forcer \u00e0 d\u00e9couper les contenus en morceaux trop petits.<\/p>\n\n<p class=\"wp-block-paragraph\">Le choix du Mixture-of-Experts r\u00e9pond aussi \u00e0 une question tr\u00e8s terre \u00e0 terre : la <strong>facture en production<\/strong>. Hy3 n\u2019active qu\u2019une partie de ses 295 milliards de param\u00e8tres au lieu de mobiliser l\u2019ensemble \u00e0 chaque t\u00e2che, avec l\u2019id\u00e9e d\u2019aller chercher des performances comparables \u00e0 celles de mod\u00e8les denses bien plus co\u00fbteux \u00e0 faire tourner.<\/p>\n\n<p class=\"wp-block-paragraph\">Tencent dit aussi avoir fait progresser la fiabilit\u00e9 depuis la pr\u00e9version. Le taux d\u2019hallucinations serait tomb\u00e9 de <strong>12,5 %<\/strong> \u00e0 5,4 %, et les erreurs de raisonnement \u00e9l\u00e9mentaire auraient, de leur c\u00f4t\u00e9, recul\u00e9 de 25,4 % \u00e0 12,7 %.<\/p>\n\n<p class=\"wp-block-paragraph\">Le groupe ajoute enfin que Hy3 tourne d\u00e9j\u00e0 dans plusieurs de ses produits, notamment WorkBuddy, <a href=\"https:\/\/yuanbao.fr.softonic.com\/\" rel=\"noopener\">Yuanbao<\/a>, des assistants int\u00e9gr\u00e9s \u00e0 <a href=\"https:\/\/wechat.fr.softonic.com\/\" rel=\"noopener\">WeChat<\/a> et le jeu Path of Exile: Advent. C\u2019est un signal int\u00e9ressant.<\/p>\n\n<p class=\"wp-block-paragraph\">Reste qu\u2019il faut garder une certaine r\u00e9serve. Le march\u00e9 est d\u00e9j\u00e0 tr\u00e8s charg\u00e9, avec des acteurs comme Zhipu AI, <a href=\"https:\/\/deepseek-tui.fr.softonic.com\/\" rel=\"noopener\">DeepSeek<\/a>, <a href=\"https:\/\/qwen.fr.softonic.com\/\" rel=\"noopener\">Alibaba Qwen<\/a> ou Mistral, et une bonne partie des chiffres avanc\u00e9s sur les performances vient encore des tests men\u00e9s par Tencent lui-m\u00eame. Les <strong>\u00e9valuations ind\u00e9pendantes<\/strong> vont donc compter, sans doute plus que le reste, pour savoir o\u00f9 Hy3 se situe vraiment dans la hi\u00e9rarchie des mod\u00e8les open source.<\/p>","protected":false},"excerpt":{"rendered":"<p>Tencent a publi\u00e9 Hy3, son grand mod\u00e8le de langage, en open source sous licence Apache 2.0. Le groupe chinois met en ligne les poids du mod\u00e8le, et ce n\u2019est pas un d\u00e9tail : pour les d\u00e9veloppeurs comme pour les entreprises, \u00e7a ouvre la porte \u00e0 un usage commercial, \u00e0 des modifications et \u00e0 de la &hellip; <a href=\"https:\/\/cms-articles.softonic.io\/fr\/tencent-lance-hy3-en-open-source-295-milliards-de-parametres-mais-21-milliards-actives\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Tencent lance Hy3 en open source : 295 milliards de param\u00e8tres, mais 21 milliards activ\u00e9s&#8221;<\/span><\/a><\/p>\n","protected":false},"author":9265,"featured_media":196994,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","wpcf-pageviews":0},"categories":[16761],"tags":[],"usertag":[],"vertical":[],"content-category":[17507],"class_list":["post-196995","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","content-category-ia"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"Tencent a publi\u00e9 Hy3, son grand mod\u00e8le de langage, en open source sous licence Apache 2.0. 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