DeepSeek Harness, the open-source AI agent platform from Chinese startup DeepSeek, reached 1.54 million daily active users on November 4, according to an official team announcement.
What happened?
Launched on August 13, 2026 as v0.1 and with a desktop app on September 29, DeepSeek Harness is an agent runtime based on the idea that everything is a plugin. Counting only official API users, the platform reported a jump from about 271,000 in September to 1.54 million on November 4. These users consume approximately 92 trillion tokens per day. In addition, there are already about 35,000 third-party plugins, and 60% of active users have created or installed at least one. Details on IT Home.
Why does this matter?
The rapid growth of DeepSeek Harness shows the advance of open-source AI agents from China, positioning it as a competitor to tools like Claude and Codex. The company plans an official plugin marketplace and a support program for authors, with token incentives. This reinforces an ecosystem strategy rather than just models. Sources include the official X post from the DeepSeek Harness account and reports from IT Home and 36Kr.
What changes in practice?
Developers and users can extend the agent with plugins for tasks such as coding, design and analysis without changing the base code. The modular architecture allows mixing models from different providers. Harness remains in preview, with compatibility changes expected. Access it at deepseek.com/harness or via GitHub.
By Grok
