Engineering · Architecture

Inside the DeepSeek Harness

A 7-part case study of a second production agent harness — DeepSeek's dsh — read against the Agent Harness series: two teams, two answers to the same problems.

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DeepSeek Harness: Inside the Open-Source Claude Code Rival (Part 1)

Aug 13, 2026 13 min

DeepSeek open-sourced its Claude Code rival today and hiked V4-Pro pricing. Real code, a head-to-head comparison, and the plugin architecture underneath.

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