4o-mini华人领队也离职了，这次不怪小扎

Core Viewpoint - OpenAI's former key researcher Kevin Lu has left to join Thinking Machine Lab, a new AI startup co-founded by former OpenAI CTO Mira Murati, which has reached a valuation of $12 billion [3][19]. Group 1: Kevin Lu's Background and Contributions - Kevin Lu has a strong background in reinforcement learning and small model development, having previously worked at Hudson River Trading, Meta, and OpenAI [5][6]. - At OpenAI, he led the development of the 4o-mini model, which is a multimodal reasoning small model that supports text and image input, designed for complex tasks with improved speed and lower costs [7][9]. - His most cited paper, "Decision Transformer: Reinforcement Learning via Sequence Modeling," has been cited 2,254 times and presents a framework for treating reinforcement learning as conditional sequence modeling [10][11]. Group 2: Thinking Machine Lab - Thinking Machine Lab has attracted several former core researchers from OpenAI, including John Schulman and Barrett Zoph, and has recently completed a record-breaking $2 billion seed funding round [4][17]. - The startup has not yet publicly disclosed any results, which has generated significant anticipation within the AI community [21]. - Despite competitive offers from other tech giants, the team members at Thinking Machine Lab have chosen to remain, indicating strong confidence in the startup's potential [20].