TREE NEWS update: DeepSeek Harness released version v0.1.5 on September 10, with deep integration for the DeepSeek V4.1 Flash model across standard, programmatic tool calling (PTC) and minimal modes, and support for updating system prompts while retaining existing KV Cache. The web client adds multi-type file uploads including images and PDFs, a sidebar file-tree preview, and standardized plugin extension slots on both sides of the interface.
DeepSeek Harness v0.1.5 Ships With Deep Integration for V4.1 Flash Model
AI take
The KV-cache-preserving system prompt update is the detail worth noticing: it targets the cost and latency penalty that usually comes with reconfiguring an agent mid-session, which matters most to teams running long-lived tool-calling loops rather than one-off chats. Pairing that with PTC and minimal modes suggests the harness is being positioned as orchestration plumbing, not just a chat wrapper. Whether the plugin slots and file-tree preview attract third-party tooling is the open question.
Generated by AI for reference only.
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