OpenAI DevDay 2026 roundup: Dots agents, GPT-6.1 Sol, and a $500/month Pro tier

OpenAI DevDay 2026: The biggest news and announcements

OpenAI held its annual DevDay in San Francisco on September 29, with CEO Sam Altman delivering the keynote and announcing several updates. The company launched Dots, an AI agent product positioned against Meta's recently released Muse, though Dots is initially limited to paying ChatGPT Pro, Business Premium and Enterprise subscribers.

Why it matters: It rounds up OpenAI's DevDay 2026 announcements and on-stage news, giving a quick read on its product line changes and user numbers.