Yifan Bai
AI researcher Yifan Bai works across autoregressive visual tracking, autonomous driving and agentic language models. They studied computer science at Xidian University and software engineering at Xi’an Jiaotong University, then coauthored ARTrack, ARTrackV2, ARPTrack and FutureSightDrive. At Megvii and Alibaba DAMO Academy, Bai worked on autonomous driving and embodied intelligence before coauthoring the Kimi K2, Kimi K2.5 and Kimi K3 technical reports. At Alibaba DAMO Academy, they work as a researcher, a role they have held since June 2025.
Timeline
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2018–2025
Bachelor’s and master’s studies
At Xidian University, Bai studies computer science from 2018 to 2022 and software engineering at Xi’an Jiaotong University from 2022 to 2025, with Xing Wei as adviser.
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2023–2024
ARTrack and ARTrackV2
In 2023, the ARTrack paper casts object tracking as a coordinate-sequence task, and Bai is a coauthor. In 2024, ARTrackV2 models an object’s trajectory and appearance in one autoregressive framework.
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December 2023–June 2025
Megvii and Alibaba DAMO internships
At Megvii Technology, Bai interns in autonomous driving from December 2023 to May 2024. At Alibaba DAMO Academy’s Visual Technology Center, they work on embodied intelligence from May 2024 to June 2025.
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2025
ARPTrack adds pretraining
At CVPR 2025, Bai coauthors ARPTrack with Shiyi Liang, Yihong Gong and Xing Wei. The system adds unsupervised autoregressive video pretraining to ARTrackV2 to model changes in object appearance and motion.
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2025
Visual reasoning for autonomous driving
The 2025 FutureSightDrive paper lists Bai among its authors and describes a visual spatio-temporal chain-of-thought system for autonomous-driving VLA models.
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July 2025
Kimi K2 technical report
The July 2025 Kimi K2 technical report lists Bai as an author and describes a 1-trillion-parameter mixture-of-experts model with 32 billion active parameters.
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February–July 2026
Kimi K2.5 and K3
Kimi K2.5, released in February 2026, is an open-source multimodal agent model trained jointly on text and vision, and Bai is a coauthor. Kimi K3, published in July 2026, is a native-vision model with a one-million-token context window, with Bai among its coauthors.
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Since June 2025
Researcher at Alibaba DAMO Academy
Alibaba DAMO Academy lists Bai as a researcher starting in June 2025. Their work includes embodied intelligence, autonomous driving, multimodal models and visual generation.
Career
Education
- 2025Xi'an Jiaotong UniversityMaster's degree
- 2022Xidian UniversityBachelor's degree
Sources and credits
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- AlexDotHam (Yifan Bai) · GitHub
- Yifan Bai | alphaXiv
- Autoregressive Visual Tracking
- ARTrackV2: Prompting Autoregressive Tracker Where to Look and How to Describe
- Autoregressive Sequential Pretraining for Visual Tracking
- FutureSightDrive: Thinking Visually with Spatio-Temporal CoT for Autonomous Driving
- Kimi K2: Open Agentic Intelligence
- README.md · MoonshotAI/Kimi-K2 · GitHub
- Kimi K2.5: Visual Agentic Intelligence
- Kimi K3: Open Frontier Intelligence