The official path
Follow OpenAI into ChatGPT
Agentic browsing did not disappear: it moved into the ChatGPT app and a Chrome extension. If ChatGPT is the assistant you want, this is the shortest route, and it is the one OpenAI supports.
Atlas shut down on 9 August 2026
Your
AI
browser
went
away.
This
one
cannot.
OpenAI retired Atlas and folded its agentic browsing into ChatGPT and a Chrome extension. If that taught you anything, it is that adopting someone else’s browser is a bet. Browsentic never asks you to make it: it is an extension in the browser you already use, and the source is yours.
What happened
Atlas lasted ten months
The short version, so you can decide what to do next without reading three press releases.
-
October 2025
Atlas ships
OpenAI releases Atlas, a Chromium browser with ChatGPT built into it and an agent mode that can act on the page for you. It is macOS only at launch.
-
July 2026
OpenAI announces the end
OpenAI says it is folding what it learned from Atlas back into ChatGPT itself, rather than maintaining a separate browser.
-
9 August 2026
Atlas stops working
Users are told to export their bookmarks and anything else they want to keep. Agentic browsing continues inside the ChatGPT desktop app and a Chrome extension instead.
Where to go
You have three honest options
Two of them are not us, and one of those is probably right for a lot of people. Here they are anyway.
Another migration
Adopt another AI browser
Comet, Dia, Opera Neon and BrowserOS all want to be your browser. Each one is a profile to import, a set of extensions to reinstall and a set of logins to redo, and each one is a company that could make the same decision OpenAI just made.
What Browsentic does
Keep the browser you have
Put the agent in an extension instead. Your profile, your extensions, your logins and your two-factor state never move, because you never left. If the project stopped tomorrow, the source is MIT and the daemon is on your disk.
The difference that matters
An extension cannot ask you to move house
Nothing to import
No profile migration, no reinstalling extensions, no signing back into everything. The agent arrives in the browser where all of that already works.
The agent is yours
It runs on the CLI you already pay for: Claude Code, Codex or Antigravity, switched in one click. Your browser is not tied to one company’s model, or to that company staying interested.
It runs on your machine
A local daemon on loopback spawns your agent as you. There is no account, no API key and no hosted service that can be turned off.
You have the source
MIT licensed and source available. A shutdown notice is a thing that happens to products you do not have the source to.
npx browsentic setup
Questions
What people ask after the shutdown
Is Browsentic a drop-in replacement for ChatGPT Atlas?
Not a drop in one, no. Atlas was a browser with an assistant and a search experience built in. Browsentic is only the agent half: it adds an AI side panel to the Chromium browser you already use, and leaves search, bookmarks and everything else exactly as they are. If what you miss about Atlas is agent mode acting on a page for you, that is the part Browsentic replaces.
What happened to ChatGPT Atlas?
OpenAI retired it. Atlas shipped in October 2025, and OpenAI announced in July 2026 that it was folding browser based agentic work back into ChatGPT. Atlas stopped working on 9 August 2026, with users advised to export bookmarks first. The capability moved into the ChatGPT desktop app and a Chrome extension.
Do I need to change browsers to use Browsentic?
No, and that is the whole idea. It is a Manifest V3 extension, so it loads into Chrome, Edge, Brave, Arc or any other Chromium browser you already use, with the profile and the logins you already have. Firefox is not supported yet because it refuses unsigned extensions.
Do I need an OpenAI or Anthropic API key?
No. Browsentic spawns the agent CLI you already signed in to: Claude Code, Codex or Antigravity. There is no API key to paste and no per token bill, because the work runs on the subscription you already have.
Checked against OpenAI’s own help centre, September 2026.
Stop describing the page. Hand it over.
Free and MIT licensed. No signup, no key to paste, and a fresh install connects to nothing until you pair it yourself.
npx browsentic setup