{"id":2844,"date":"2026-09-12T21:00:00","date_gmt":"2026-09-12T21:00:00","guid":{"rendered":"https:\/\/netguide.io\/news\/?p=2844"},"modified":"2026-09-12T21:34:57","modified_gmt":"2026-09-12T21:34:57","slug":"deepseek-v4-1-flash-encoder-decoder-open-weights-2","status":"publish","type":"post","link":"https:\/\/netguide.io\/news\/en\/2026\/09\/12\/deepseek-v4-1-flash-encoder-decoder-open-weights-2\/","title":{"rendered":"DeepSeek V4.1 Flash: New Encoder-Decoder Architecture and Open Weights"},"content":{"rendered":"<div id=\"netgu-206595797\" class=\"netgu-before-content netgu-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6258556257245998\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-6258556257245998\" \ndata-ad-slot=\"3494115342\" \ndata-ad-format=\"auto\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n<p class=\"wp-block-paragraph\"><strong>On September 10, 2026, DeepSeek unveiled V4.1 Flash, a multimodal language model that introduces a new architecture and sharply cuts API prices.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">A new causal encoder-decoder architecture<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The company calls V4.1 Flash the smallest model in a new family. It uses a \u201cCausal Encoder\u2013Decoder\u201d design with a 552-billion-parameter mixture-of-experts core, of which DeepSeek says only 8 billion parameters are active on input and 16 billion on output. Compared with the previous generation, the model reportedly needs just a quarter of the HBM and an eighth of the SSD storage for its KV cache.<\/p><div id=\"netgu-256969886\" class=\"netgu-content netgu-entity-placement\"><aside class=\"deals-top deals-top--compact\">\n\n\t\t\t<h3 class=\"deals-top__title\">Top-Deals<\/h3>\n\t\n\t\t\t<ul class=\"deals-top__list\">\n\t\t\t\t\t\t\t<li class=\"deals-top__item\">\n\t\t\t\t\t<a class=\"deals-top__link\" href=\"https:\/\/netguide.io\/deals\/de\/deals\/ugreen-aluminium-tabletstaender-360-drehbar-hoehenverstellbar\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img class=\"deals-top__image\" src=\"https:\/\/netguide.io\/news\/wp-content\/uploads\/sites\/15\/2026\/09\/2825012_1-150x150.webp\" alt=\"\" width=\"52\" height=\"52\" loading=\"lazy\" \/>\n\t\t\t\t\t\t\n\t\t\t\t\t\t<span class=\"deals-top__body\">\n\t\t\t\t\t\t\t<span class=\"deals-top__name\">UGREEN Aluminium Tabletst\u00e4nder | 360\u00b0 Drehbar &amp; 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\/>\n\t\t\t\t\t\t\n\t\t\t\t\t\t<span class=\"deals-top__body\">\n\t\t\t\t\t\t\t<span class=\"deals-top__name\">Kostenlose Cosmo-Box f\u00fcr Brawl Stars<\/span>\n\n\t\t\t\t\t\t\t<span class=\"deals-top__meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"deals-top__price\">Gratis<\/span>\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\n\t\t\t\t\t\t<span class=\"deals-top__temperature\">\n\t\t\t\t\t\t\t52\u00b0\n\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t\t<\/ul>\n\n\t\t\t\t\t<p class=\"deals-top__more\">\n\t\t\t\t<a href=\"https:\/\/netguide.io\/deals\/\">Alle Deals ansehen \u2192<\/a>\n\t\t\t<\/p>\n\t\t\t<\/aside>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Multimodal, open weights, low prices<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V4.1 Flash understands images natively and is reachable through the <code>deepseek-flash<\/code> endpoint with a one-million-token context window. DeepSeek publishes the weights as an open-weight model on Hugging Face, along with a technical report. Prices dropped at launch: during peak hours the price list quotes input at $0.30 per million tokens (cache miss) and output at $1.20, with off-peak rates set at half of that.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Performance claims come with caveats<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DeepSeek points to \u201ctests by multiple parties\u201d that place V4.1 Flash ahead of the outgoing V4-Pro on performance, cost, speed and total runtime \u2013 vendor figures that have not yet been independently verified. From September 14, 2026, DeepSeek plans to route V4-Pro requests automatically to the new model until a V4.1-Pro variant arrives.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sources:<\/strong> <a href=\"https:\/\/www.deepseek.com\/en\/news\/deepseek-v4-1-flash\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">DeepSeek \u2013 Introducing DeepSeek-V4.1-Flash<\/a> and the <a href=\"https:\/\/api-docs.deepseek.com\/news\/news260910\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">announcement in the DeepSeek API Docs<\/a>.<\/p>\n<div id=\"netgu-75339976\" class=\"netgu-after-content netgu-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6258556257245998\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-6258556257245998\" \ndata-ad-slot=\"4559785002\" \ndata-ad-format=\"auto\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>On September 10, 2026, DeepSeek unveiled V4.1 Flash, a multimodal language model that introduces a new architecture and sharply cuts [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1697,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1692],"tags":[],"class_list":["post-2844","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux-en"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/posts\/2844","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/comments?post=2844"}],"version-history":[{"count":1,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/posts\/2844\/revisions"}],"predecessor-version":[{"id":2850,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/posts\/2844\/revisions\/2850"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/media\/1697"}],"wp:attachment":[{"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/media?parent=2844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/categories?post=2844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/netguide.io\/news\/wp-json\/wp\/v2\/tags?post=2844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}