According to Greg Brockman on Twitter, OpenAI has launched 'Santa mode' for Codex, a new feature that adds festive, seasonally themed capabilities to its AI coding assistant (source: @gdb, December 25, 2025). This update demonstrates OpenAI’s ongoing efforts to enhance user engagement through playful and contextual AI functionalities. For developers and businesses, such features highlight the adaptability of Codex in catering to various user needs and occasions, potentially increasing user retention and opening new opportunities for branded or event-based coding experiences. The announcement underscores the trend of integrating personality and context awareness into AI developer tools to improve productivity and user satisfaction (source: @gdb).