OpenAI officially entered the browser wars today, October 21, 2025, by launching ChatGPT Atlas, its first dedicated, AI-powered web browser. The introduction, announced via a livestream, signals a significant strategic move by the artificial intelligence leader to redefine the fundamental way users interact with the internet, directly targeting the established dominance of platforms like Google Chrome and Apple Safari.
ChatGPT Atlas is built from the ground up around the core ChatGPT technology, moving beyond simple extensions to embed intelligence directly into the browsing conduit. Key features include the Integrated ChatGPT Sidebar, which offers context-aware summarization and on-the-fly information synthesis without requiring users to switch applications. For searches, the new tab page presents ChatGPT-based results first, with quick-access tabs available for traditional links, images, and videos.
A major differentiator is the 'Agent Mode,' currently in preview for Plus, Pro, and Business tier users. This capability allows the AI to execute complex, multi-step tasks autonomously on the user's behalf, such as managing form submissions or coordinating appointments. Furthermore, the system incorporates a Memory Functionality, which learns user habits for a deeply personalized experience, though users retain control to toggle this feature off or use standard incognito options to manage data privacy.
The initial rollout targets the macOS user base, with Windows, iOS, and Android versions promised for the near future. This strategic entry leverages OpenAI's large language model prowess to capture a foundational layer of internet access. The move comes as the browser market remains heavily concentrated; for instance, data from late 2023 indicated Google Chrome held a global market share around 65%, illustrating the scale of the challenge Atlas faces in reshaping digital agency.