OpenAI’s pursuit of enterprise artificial intelligence (AI) market share has resulted in a shift of focus from ChatGPT to Codex. While the flagship AI app has received a couple of incremental updates, Codex has been aggressively upgraded and expanded by the team. In the last 30 days, the San Francisco-based AI giant upgraded the desktop app to support native computer use and web browsing, released the GPT-5.5-Cyber model, and added a secure sandboxing environment for Windows.