An AI-integrated, Chromium-based web browser developed by OpenAI with ChatGPT at its core. Released for macOS on October 21, 2025, it featured sidebar page summaries, a browser memory that turned your browsing history into usable context, and an agent mode that let AI operate the browser on your behalf.
Important: ChatGPT Atlas is no longer available as a standalone browser. OpenAI announced a change of direction on July 9, 2026, and Atlas stopped working on August 9, 2026. The browsing experience developed in Atlas has been carried over into the ChatGPT Chrome extension, the ChatGPT desktop app, and a cloud browser (a remote browser environment where OpenAI’s agent runs). This article serves as a record of what Atlas offered and a guide to where its features went.
Key Features (while available)
- ChatGPT sidebar: Summarize, translate, or ask questions about the current page in a side panel. Chatting with ChatGPT without leaving the page was the core experience
- Browser memory: Optionally let ChatGPT remember the content of sites you visited, enabling requests grounded in past browsing such as “round up the job listings I looked at last week” (opt-in)
- Agent mode: Delegate browser tasks such as research, bookings, and form filling to ChatGPT. Offered as a preview for paid plans (Plus/Pro/Business), and designed to ask for confirmation before performing actions
- Chromium-based: Could import bookmarks, passwords, and browsing history from Chrome, with good compatibility with existing extension ecosystems
- Cursor chat: Inline assistance on selected text within a page, such as rewriting or drafting replies on the spot
Pricing
| Plan | Price | Highlights |
|---|---|---|
| Browser | Free | Available on macOS with a ChatGPT account (including the Free plan) |
| Agent mode | For ChatGPT Plus/Pro/Business subscribers | Preview offering; allowed delegating browser operations |
Atlas was discontinued on August 9, 2026. For the latest on its successor features in ChatGPT, see the official site and the Help Center.
Pros & Cons
✅ Pros (as evaluated while available)
- The browser and ChatGPT were unified, so page summaries, questions, and writing assistance required no tab switching
- Browser memory enabled requests grounded in previously viewed pages, giving research strong continuity
- Being Chromium-based, the barrier to switching from Chrome was low
- Agent mode took a safety-first design, asking for confirmation before executing actions
⚠️ Cons
- Discontinued as a standalone browser on August 9, 2026; no longer available for new use
- Officially supported only on macOS; Windows/iOS/Android remained “coming soon” until the standalone product ended
- Agent mode was a paid-plan-only preview, and its reliability was still a work in progress
- Because the design passed browsing content to AI, users needed to understand and manage privacy settings
Comparison with Similar Services
| Comparison | ChatGPT Atlas | Perplexity Comet | Dia | Microsoft Edge (Copilot) |
|---|---|---|---|---|
| Provider | OpenAI | Perplexity | The Browser Company | Microsoft |
| Core AI | ChatGPT | Perplexity | In-house assistant | Copilot |
| Availability | Discontinued (Aug 2026) | Available | Available | Available |
| Supported OS (at the time) | macOS only | macOS/Windows | macOS | Windows/macOS and more |
| Agent operations | Preview (paid plans) | Yes | Limited | Yes |
Who Is It For
Since Atlas itself can no longer be used, here are current options for those seeking the experience Atlas offered.
- Want browsing assistance with ChatGPT’s context → the ChatGPT Chrome extension and desktop app
- Want to delegate browser operations (agentic work) → ChatGPT’s agent features (cloud browser)
- Want a dedicated AI-integrated browser → current AI browsers such as Perplexity Comet or Dia
Summary
ChatGPT Atlas was an ambitious product that embodied OpenAI’s vision of “turning the browser itself into ChatGPT,” but its standalone run ended on August 9, 2026 — roughly nine months after its October 2025 debut. The vision itself has not disappeared, however: its core capabilities, from sidebar assistance to agent operations, have been carried into the ChatGPT Chrome extension, desktop app, and cloud browser. For those who were interested in Atlas, following the feature expansion of ChatGPT itself is now the practical successor route.