Overview
- Atlas is available now on macOS, with versions for Windows, iOS and Android planned, and its Agent Mode is limited at launch to Plus, Pro and Business subscribers.
- The browser centers a ChatGPT sidebar, inline “cursor chat” editing and optional browser memories, and a live demo showed the agent parsing a recipe and filling an Instacart cart.
- OpenAI says browsing content is not used to train models by default and that users control memories, but at least one technical review found the installer’s model‑improvement setting enabled on first run.
- Technical analyses indicate a Chromium foundation with support for Chrome extensions, and OpenAI says the agent operates only within tabs without access to local files.
- The debut escalates competition with Google, Microsoft and Perplexity in AI‑driven browsing, with Alphabet shares slipping after the announcement and regulators watching defaults and reliability.