Tianqing FangSenior Research Scientist · TencentResearcher↗
Researcher
TencentChief AI Scientist
Yao's PhD work helped turn language models from answer generators into agents that reason, use tools, and revise their plans. He created ReAct and Tree of Thoughts, carried those ideas into OpenAI's Operator and Deep Research, and later joined Tencent as Chief AI Scientist.
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Reviewed August 8, 2026 · Checked for accuracy and new information.