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On October 16, 2026, DeepSeek established a product department, integrating its four teams—Harness, Web, App, and Platform—under the leadership of Cui Tianyi, who comes from a quantitative trading background, to oversee product, design, and R&D. Related reports noted that DeepSeek Harness was open-sourced under the MIT license on August 13, and by mid-October the repository had accumulated about 250,000 GitHub stars; the official website has posted job openings for two directions: AI product manager and Agent Harness. The reports also mentioned that Guo Daya, a core contributor to R1, left in March 2026 to join ByteDance Seed because he believed the Agent direction was not a high priority within DeepSeek. Currently, this integration is coordinated by Cui Tianyi, and there are no further developments with supporting evidence at this time.
AI-generated from public reports
Developments
1 confirmed developments
DeepSeek integrates the Harness team with the web, App, and open platform teams
Source:TMTPost · AGI
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Oct 24
TMTPost · AGI
DeepSeek Establishes Product Department, Quantitative Trader Cui Tianyi to Coordinate Four Teams Including Harness
On October 16, DeepSeek established a product department, integrating the four teams Harness, Web, App, and Platform, headed by Cui Tianyi, who comes from a quantitative trading background, to coordinate product, design, and R&D. Previously, Guo Daya, a core contributor to R1, left in March 2026 to join ByteDance Seed due to optimism about the Agent direction not being a high priority within DeepSeek. DeepSeek Harness was open-sourced under the MIT license on August 13, and as of mid-October the repository had accumulated about 250,000 GitHub Stars.
TMTPost · AGIRelated discussion
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This post contributes to heat; it is not a formal report or confirmed fact.
Oct 23
36Kr · AI
Liang Wenfeng needs his own Tibo: DeepSeek product department integration and the Agent path
DeepSeek has integrated the Harness with the web, App, and open platform teams into a product department, led by Cui Tianyi, and the official website has posted recruitment positions in two directions: AI product manager and Agent Harness. The article uses OpenAI Codex lead Tibo Sottiaux and the Anthropic Claude Code team as examples to explain how the execution capabilities of coding tools can be extended into a general work task entry point. DeepSeek, while open-sourcing Harness and the inference framework DeepInfer, is also facing cost pressure on caching and transmission brought by long tasks.
Oct 19
X.PIN
DeepSeek Merges Four Teams to Form Product Department
DeepSeek has merged its four teams—Harness, Web, App, and Platform—into a new product department, led by Cui Tianyi, the former head of the Harness team. The department is currently hiring product designers with the goal of improving the consumer experience.
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