OpenAI is gearing up for its third annual developer conference, DevDay 2025, scheduled for October 6 at Fort Mason in San Francisco. The event is expected to attract over 1,500 attendees and will feature keynotes from CEO Sam Altman and renowned designer Jony Ive. This year's conference promises to be OpenAI's largest yet, showcasing its advancements in AI technology, including a potential AI device and a social media app. The event will also include a 'Developer State of the Union' and a closing fireside chat with Altman and Ive. Amidst growing competition from companies like Anthropic and Google, OpenAI is focused on demonstrating its leadership in the AI space.