What Is ChatGPT Agent? The Name Means Five Things
“ChatGPT agent” now points at five different things, two of which no longer exist. That is not pedantry: it is why the advice you find for it contradicts itself, and why OpenAI’s own help page for the feature currently tells you it has been removed and then explains how to launch it.
Here is what each one is, what is dead, and what you should be using instead.
1. Agent mode, the original. Removed.
Launched in 2025 as the tools-menu option that gave ChatGPT a virtual browser. You typed /agent, described a task, and it browsed, clicked and filled forms on a remote machine, pausing to hand you control when a site needed a login.
OpenAI’s help page for it now opens with this:
ChatGPT agent is no longer available. Use ChatGPT Work for longer, multi-step tasks and finished deliverables.
The rest of that same page, updated three days before this was written, still says “To start using agent mode, select it from the tools menu or type /agent in the composer.” Both sentences are live on the page. The removal notice is the accurate one, and it is the reason a lot of guides written weeks ago describe a menu item you will not find.
For the historical record, since it explains a lot of stale comparison tables: agent mode ran on monthly message limits of 40 for Plus, 400 for Pro, and 40 for Business and Enterprise, and every unique invocation counted, including ones inside scheduled tasks.
2. Operator. Folded in, then gone with it.
Operator was OpenAI’s standalone browsing agent on its own website. Its functionality was absorbed into agent mode and, in OpenAI’s words, “the Operator website is no longer accessible.” When agent mode went, this went with it. If a comparison post pits Operator against anything, it is out of date.
3. Atlas, the agentic browser. Shut down August 9, 2026.
Atlas was OpenAI’s own browser. It is gone. The announcement went up on July 9, 2026 with an approximately 30-day wind-down, and OpenAI’s guidance is direct: “Atlas is scheduled to stop working on August 9, 2026.”
Bookmarks, history and open tabs did not transfer automatically, and anyone who missed the export window has lost them. Browser-based agentic work moved into the ChatGPT desktop app, which OpenAI says now supports multiple tabs, downloads, improved navigation and account login, and into the ChatGPT Chrome extension or sidebar for working alongside Chrome.
4. ChatGPT Work. The actual replacement.
This is what OpenAI now points agent-mode users at, and it is the one to learn. ChatGPT Work takes a described outcome and produces a finished deliverable across many steps, pulling context from a large connector directory along the way.
It is not a drop-in replacement for everything agent mode did. The capability people miss most is the secure browser handoff: agent mode paused, gave you control of its virtual browser to type a password with screenshots suspended, then resumed. Work is oriented at research, files and documents rather than at driving a logged-in website on your behalf. For browser workflows specifically, OpenAI now points at the cloud browser and the desktop app rather than at Work.
Worth knowing before you plan around it: what Work’s limits are, what it costs, and how it compares to Codex, which is the comparison OpenAI’s own users search for most.
5. Workspace agents. A different product entirely.
Confusingly, “agents” also names OpenAI’s Codex-powered workspace agents, positioned as the evolution of GPTs. These are built once and deployed for a team, they run in the cloud, they can be scheduled, and they can be reached over an API. They are a business-plan feature, not something a Plus subscriber turns on.
If someone tells you ChatGPT agents can be triggered by an API call, this is what they mean, and the distinction matters: something upstream still has to notice the event and make the call.
Which one you want
| You want to | Use |
|---|---|
| Hand over a long multi-step task and get a file back | ChatGPT Work |
| Work across websites in a browser | ChatGPT desktop app, or the Chrome extension |
| Write and ship code | Codex |
| Build something reusable for a team | Workspace agents |
| Use agent mode or Operator | Neither exists |
The capability none of them has
Every product on that list starts when a person starts it, or when a clock fires.
The unattended-work gap closed when ChatGPT and Claude Cowork added scheduled runs. Their standard schedulers still start from the clock, not arbitrary events in connected apps; API-triggered ChatGPT Workspace Agents require an external event detector and caller.
That is the line the renaming keeps obscuring. Agent mode, Work, the desktop browser: all of them wait for you to open something and describe a task. Scheduled runs help, and they are real, but a schedule is a guess about when something will happen rather than a response to it happening.
Agents that start on their own
Carly is built from the other end. Every agent gets its own name, email address and memory, so a colleague, a client or a form sends work directly to it, and it fires on events: an inbound email, a booking, a calendar invite, a submitted form, a changed CRM record.
That changes what you can hand off. A lead emails and is qualified, booked and logged before you have read it. A client replies and the CRM updates. An invoice arrives and gets filed and chased. It holds several mailboxes at once, so work and personal accounts both stay connected instead of replacing each other, and it reaches the rest of your stack through 260+ native integrations plus your own API key for anything else with an API.
The pricing runs the other way from an agent metered by how much you personally drive it: Zapier-style workflow steps are free, and AI agents start at $35 a month. Start one at carlyassistant.com.
FAQ
Is ChatGPT agent mode gone?
Yes. OpenAI’s help page for ChatGPT agent now states that it is no longer available and directs users to ChatGPT Work for longer multi-step tasks, though the rest of that page still describes the old /agent launch flow.
What replaced ChatGPT agent mode?
ChatGPT Work for multi-step tasks and finished deliverables, and the ChatGPT desktop app or Chrome extension for browser-based work. There is no single feature that covers everything agent mode did.
What happened to Operator?
Operator’s functionality was merged into agent mode and the standalone Operator website was taken offline. It went away when agent mode did.
Is ChatGPT Atlas still available?
No. Atlas stopped working on August 9, 2026, after an announcement on July 9 and roughly a 30-day wind-down. Bookmarks and history did not transfer automatically.
What is the difference between ChatGPT Work and workspace agents?
Work is a mode you use yourself for a specific task. Workspace agents are reusable, Codex-powered agents built and deployed for a team on business plans, which can be scheduled or invoked over an API.
Can any ChatGPT agent run when something happens?
Not on its own. Scheduled runs are available, and workspace agents accept API calls, but an upstream system still has to detect the event and make that call.
More: What is ChatGPT Work · ChatGPT Work limits · ChatGPT Work vs Codex · ChatGPT agent mode · ChatGPT Work vs Claude Cowork
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