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[ARTICLE · art-125531] src=technode.com ↗ pub= topic=ai-products verified=true sentiment=↑ positive

DeepSeek releases Harness 0.1.5 with V4.1 Flash support, file uploads and sidebar previews

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.

read1 min views12 publishedSep 10, 2026
DeepSeek releases Harness 0.1.5 with V4.1 Flash support, file uploads and sidebar previews
Image: Technode (auto-discovered)

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.

Version 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.

The 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, in Chinese]

source & further reading
technode.com — original article ByteDance’s Volcano Engine to bring Arm AGI CPU-powered agentic sandboxes to market DeepSeek formally launches V4.1 Flash, routes V4 Pro requests to Flash Ant International, Visa and Mastercard develop Know-Your-Agent framework for AI payments
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