On October 21, 2025, OpenAI launched ChatGPT Atlas, an AI-powered web browser integrating ChatGPT at its core. Initially available on macOS, Atlas features a ChatGPT sidebar for contextual engagement, personalized browsing memories, and an "Agent Mode" that automates multi-step tasks. OpenAI aims to redefine browsing as a conversational, AI-driven experience, challenging Google Chrome's dominance.