Your Harness. You Define It. Meet Creator Mode in DeepSeek Harness. Turn ideas into plugins that you can use, from a design workspace to a sandbox game or a 3D LLM visualizer. What will you create?

A little earlier than planned… DeepSeek-chan is here! 🐟💙 The FREE Live2D model is now available on my VGen! Want a model of your own? I also offer full-service commissions, from character art to rigging! Come check it out! #DeepSeek# #Live2D# #FreeLive2DModel# #Vtuber#

🚀 Introducing DeepInfer, our in-house inference framework, now fully open source! Powering DeepSeek-V4.1-Flash at scale with high throughput and low latency. We’re sharing our production stack to help the community lower compute costs, reduce energy use, and make AI more affordable. 🔗 1/4

🚀 DeepSeek-V4.1-Flash-1017 is here! Stronger benchmark performance, faster task completion, and shorter outputs than the previous version—a Pareto improvement in performance and cost. Now live on our website, app, and API. 🛠️ Optimized for @DeepSeekHarness, Tencent CodeBuddy, WorkBuddy, and more. Upgrade to DeepSeek Harness v0.2.1-rc.1 or later for the best experience with the new model. 1/4

Between 8:11 and 13:04 (Beijing Time) on October 15, 2026, DeepSeek API service system experienced a failure that prevented the API service from functioning properly during that period. We sincerely apologize for the inconvenience and disruption this may have caused. We immediately launched a comprehensive investigation and thorough rectification effort focused on service stability, and have comprehensively reviewed and eliminated single points of dependency to resolutely prevent similar issues from recurring. As compensation, we will fully refund the amount consumed within 7 days (10.8-10.14) on your account in the form of credit. The credit will be automatically deposited, and API billing deductions will be made from the credit account first. We apologize once again for the impact this failure had on you, and we thank you for your continued trust and support. 北京时间 2026 年 10 月 15 日 8:11 至 13:04 期间，我们的服务系统出现故障，导致该时段内 API 服务无法正常使用。对于此次故障给您带来的不便与困扰，我们深表歉意。我们已第一时间启动针对服务稳定性的全面排查和彻底整改，全面梳理并剥离单点依赖，坚决杜绝同类问题再次发生。 作为补偿，我们将按您账号 7 日内（10.8-10.14）的消耗金额以赠金形式全额返还，赠金自动到账，API 计费扣款先从赠金账户扣除。此次故障对您造成了影响，我们再次致歉，感谢您一直以来的信任与支持。

Introducing Step 5 Preview: Advancing the Pareto Frontier. Step 5 Preview is our new flagship model for agentic work, delivering frontier-level performance across software engineering and professional knowledge work, with particular strength in finance. - 600B total / 27B active MoE, with 1M context + Vision - Substantially lower task cost at comparable intelligence - Broad software engineering capabilities with sustained execution over long horizons Try Step 5 Preview: Model page: Open weights on Oct 15.

Nearly half a year of silence. We spent it studying one problem: how far RL can scale. MiMo-V2.6 is in the middle of its RL run right now. Three things we scaled: compute (~2B tokens per step, 1568 prompts × 16 rollouts, fully async), environments and harnesses (multi-task agentic RL, mixed across multiple harnesses in one run), and grader compute (agentic in-group credit assignment, with test-case and rubric-based rewards). We'll open-source the details piece by piece over the coming weeks. Streaming the run:

🚀 Introducing DeepSeek-V4.1-Flash: smarter, faster, more efficient. 🔹 Introducing the smallest model in our new architecture family, with native visual understanding. 🔹 Designed for greater capability, faster inference, higher throughput, and scaling to larger models. 1/6

@teortaxesTex heard ds harness is about to pick a few people from the survey for a closed beta. i figure once that's done, we'll see v4ga in a week or two. my guess is the release will be sometime between aug 10 and 20.