Overview
- Atlas is available globally on macOS today, with versions for Windows, iOS and Android promised soon.
- ChatGPT is embedded throughout the interface, including a split‑screen companion view, a sidebar for page-aware help, summarization tools and a “cursor chat” feature for inline edits.
- Agent Mode can complete multi‑step tasks like booking, form‑filling and purchases inside tabs, launching as a preview for Plus, Pro and Business users with approvals and safety limits.
- OpenAI says browsing content will not train future models by default, and optional browser memories can be viewed, managed or disabled by users.
- Built on Chromium, the debut escalated the AI browser contest and prompted a market reaction, with Alphabet shares falling about 3% after the announcement.