DeepSeek merges Harness, Web, App and Platform teams into a product department
Citing a report by The Paper, Chinese outlets say DeepSeek has merged its Harness team with its Web, App and Platform teams into a single “product department” responsible for all of the company's product, design and R&D work, with former Harness lead Cui Tianyi heading it; Cui confirmed the report to The Paper. DeepSeek Harness is a TypeScript agent runtime framework DeepSeek open-sourced in August 2026 under the MIT license, built around an “everything is a plugin” design in which models, tools, sessions, sandboxes, storage and the agent loop are all supplied through the Cordis plugin system; its v0.2 desktop preview shipped on September 29 with ready-to-use macOS and Windows installers. The report also says the new department is hiring product designers and designers.
Folding the agent runtime together with the Web and App product lines into one unit suggests DeepSeek is trying to move Harness from an open-source framework toward a unified product effort.