DeepSeek's Open-Source Agent Harness Hits 1.54 Million Daily Active Users, Positioned as OS for the Agent Era

DeepSeek's open-source agent application Harness has surpassed 1.54 million daily active users on its official API less than three months after launch, nearly five times the 271,000 seven-day average at the end of September. Users consume about 92 trillion tokens per day, or roughly 60 million per person, indicating that long-running agent tasks require far more compute than traditional chatbots.

Harness features a fully plugin-based architecture and has accumulated about 35,000 user plugins. DeepSeek team member Tianyi Cui stated that Harness is positioned as "the operating system for the Agent era," with the official team providing only stable foundational capabilities and general built-in functions. Adhering to an "everything is a plugin" design, even built-in functions can be replaced by third-party plugins, encouraging community creations to become users' daily choices.

This growth mainly occurred after the desktop version release, confirming the enormous compute demands of agent applications. Next, the official team plans to launch a plugin marketplace and creator incentive program, though details are not yet disclosed. Harness's open strategy and plugin ecosystem are expected to foster new application forms and have a substantial impact on the agent track and developer ecosystem.