Atlas

Atlas is a program for surfing the internet, in other words a browser like Chrome, Safari, or Firefox. It was released in October 2025 by OpenAI, the company behind ChatGPT. The difference from ordinary browsers: the chat program ChatGPT is built in directly and runs alongside every page. This means you can ask a question about the text right in the middle of reading it, without switching tabs. The browser is aware of the content of the page currently open. In a special mode, it is even supposed to be able to click and fill out forms itself.

Why a browser became a bone of contention

The browser is the window through which most people look into the internet. Whoever controls this window has a say in where users go first. Google has been making a great deal of money for decades by having Chrome lead to its own search engine. It is exactly this path that OpenAI is attacking with Atlas.

A lot is at stake for news sites and online shops as well. If a browser summarizes articles, the user may not click through to the site at all anymore. Advertising revenue and subscriptions then disappear. Many publishers therefore view such tools critically, and some have already filed lawsuits.

For investors, Atlas is a signal that OpenAI does not just want to sell models. The company is building products that compete directly for users. Shares of Alphabet, Google’s parent company, reacted noticeably to the announcement. Whether this will have a long-term effect remains to be seen.

What the agent mode actually does

At its core, Atlas is a normal browser. It is built on Chromium, the same open foundation as Chrome and Edge. On top of that sits a sidebar with ChatGPT. This sidebar receives the text of the open page and can explain, translate, or compare it.

More interesting is the so-called agent mode. An agent is an AI that doesn’t just answer but carries out steps itself. You give it a goal, for example putting the ingredients for a recipe into a shopping cart. The model then sees the page, decides on the next click, and repeats this until it’s done. For payments or passwords, it is supposed to stop and ask first.

On top of that comes a memory: Atlas can remember which pages you have visited. This makes answers more personal, but it is also the most sensitive part. Experts also warn about prompt injection. In this case, someone hides instructions on a webpage that are not meant for humans but for the AI. The agent could follow them and leak data.

Who can use Atlas and what competitors are building

Atlas first appeared for Apple computers running macOS and is generally free to use. Windows, iOS, and Android versions have been announced. The agent mode was initially reserved for paying subscribers. Existing bookmarks and passwords can be imported from the old browser at startup.

Atlas is not an isolated case. Perplexity offers a similar browser called Comet, Google is building its Gemini models into Chrome, and Microsoft is upgrading Edge with Copilot. The technical term for this is agentic browsing, meaning surfing with an acting AI. Competition in this space has been moving very fast since 2025.

In news coverage, Atlas usually comes up in two contexts: as an attack on Google’s dominance and as a privacy issue. A common misconception is that Atlas is a new AI model. It is not. It is a wrapper that brings existing ChatGPT models closer to everyday browsing.