OpenAI DevDay 2026: 20+ announcements, including GPT-6 Astra

OpenAI announced more than 20 updates at DevDay 2026, covering the GPT-6 Astra model, ChatGPT, Codex, APIs, security, and new tools for builders. The event highlights OpenAI's latest technical progress and ecosystem expansion.

• OpenAI launches agentic assistant Dots2026-09-29
• OpenAI upgrades Codex with reusable cloud environments and voice CLI2026-09-29
• OpenAI prepares $500 ChatGPT Pro Max subscription with faster Codex2026-09-25
• Researchers chained bugs to compromise OpenAI ChatGPT accounts2026-09-18
• ChatGPT for Financial Services Launch2026-09-10