{"slug": "deepseek-releases-harness-0-1-5-with-v4-1-flash-support-file-uploads-and-sidebar", "title": "DeepSeek releases Harness 0.1.5 with V4.1 Flash support, file uploads and sidebar previews", "summary": "DeepSeek released version 0.1.5 of DeepSeek Harness on Sept. 10, adding dedicated optimization for V4.1 Flash plus file-upload and sidebar-preview features, according to IT Home. Version 0.1.5 supports V4.1 Flash in standard, programmatic tool-calling (PTC) and minimal modes, allows system prompts to be updated while retaining the existing KV Cache, and lets users upload images and PDFs for model-assisted file reading. The update also adds workspace file-tree previews for Markdown, HTML, PDF, code and image files, standardized plugin extension points, improved long-session performance, two-way communication with child agents, and an experimental Agent Teams plugin that lets a main agent create and coordinate multiple team members but is disabled by default.", "body_md": "DeepSeek has released version 0.1.5 of DeepSeek Harness, adding dedicated optimization for V4.1 Flash and new file-upload and sidebar-preview features, IT Home reported on Sept. 10.\n\nVersion 0.1.5 supports V4.1 Flash in standard, programmatic tool-calling (PTC) and minimal modes. It also allows system prompts to be updated while retaining existing KV Cache, and lets users upload images and PDFs for model-assisted file reading.\n\nThe update adds workspace file-tree previews for Markdown, HTML, PDF, code and image files, standardized plugin extension points, improved long-session performance and two-way communication with child agents. An experimental Agent Teams plugin lets a main agent create and coordinate multiple team members, but is disabled by default. [[IT Home](https://www.ithome.com/1/000/715.htm), in Chinese]", "url": "https://wpnews.pro/news/deepseek-releases-harness-0-1-5-with-v4-1-flash-support-file-uploads-and-sidebar", "canonical_source": "https://technode.com/2026/09/10/deepseek-releases-harness-0-1-5-with-v4-1-flash-support-file-uploads-and-sidebar-previews/", "published_at": "2026-09-10 07:44:17+00:00", "updated_at": "2026-09-10 07:51:36.768745+00:00", "lang": "en", "topics": ["ai-products", "ai-tools", "ai-agents", "large-language-models"], "entities": ["DeepSeek", "DeepSeek Harness", "V4.1 Flash", "IT Home", "Agent Teams"], "alternates": {"html": "https://wpnews.pro/news/deepseek-releases-harness-0-1-5-with-v4-1-flash-support-file-uploads-and-sidebar", "markdown": "https://wpnews.pro/news/deepseek-releases-harness-0-1-5-with-v4-1-flash-support-file-uploads-and-sidebar.md", "text": "https://wpnews.pro/news/deepseek-releases-harness-0-1-5-with-v4-1-flash-support-file-uploads-and-sidebar.txt", "jsonld": "https://wpnews.pro/news/deepseek-releases-harness-0-1-5-with-v4-1-flash-support-file-uploads-and-sidebar.jsonld"}}