XPeng CEO He Xiaopeng said the robot that mastered the catwalk was built by a Chinese startup, shortly after Elon Musk flaunted Tesla Optimus robot. The remark came as XPeng showcased its Iron humanoid robot with lifelike motion and in-house Turing AI chips at its 2025 AI Day. Retail sentiment on Stocktwits turned bullish for both Tesla and XPeng.