According to @drfeifei, BEHAVIOR is an open-source benchmark designed to enable and evaluate embodied AI and robotics on long-horizon, everyday household tasks grounded in human needs, source: Fei-Fei Li (@drfeifei) on X, Dec 7, 2025. According to @drfeifei, the 1st BEHAVIOR Challenge will be held at NeurIPS 2025 with a submission deadline of 11/15 and prizes of $1,000, $500, and $300, source: Fei-Fei Li (@drfeifei) on X, Dec 7, 2025. According to @drfeifei, the announcement thread includes a challenge description and video for participants, source: Fei-Fei Li (@drfeifei) on X, Dec 7, 2025.