According to Greg Brockman on Twitter, OpenAI's Codex is now accessible to ChatGPT Plus users, introducing a highly requested feature that allows users to enable internet access for the AI agent with granular control over HTTP methods and allowed domains (source: Greg Brockman, Twitter, June 3, 2025). This update enables developers and businesses to leverage real-time data and web resources directly within ChatGPT, significantly expanding opportunities for AI-driven automation, workflow integration, and up-to-date information retrieval. The new controls enhance security and customization, making Codex a more robust solution for enterprise and application development in dynamic environments.