ChatGPT's App Shake-Up Explained: What Has Already Changed and What You Keep

The short version, as of September 2026: two of the four changes are finished and two are still playing out. The Atlas browser stopped working on August 9 and the official DALL-E GPT's August 30 retirement date has passed, so there is nothing left to export from either. Group chats are still winding down (no new ones since July 9; existing ones stay until they go read-only), and the desktop-app choice is still yours: the new app that merges Chat, Work, and Codex, or the old one, now called ChatGPT Classic, which keeps working. None of this touches your one-on-one chats, your history, or the free tier. This page explains each change, what you keep, and what, if anything, you need to do.

Key Takeaways

• A new ChatGPT desktop app launched July 9, 2026. It combines Chat, Work, and Codex in one app for macOS and Windows, globally. The old app you had is now called ChatGPT Classic.
• ChatGPT Classic still works. It keeps getting model updates, bug fixes, and security patches -- but the new agent features (Work and Codex) only live in the new app.
• Group chats are being retired. From July 9 you cannot create new group chats or join one by invite link. Existing ones stay for now; when they go read-only, you keep everything already shared in them.
• The Atlas browser stopped working on August 9, 2026. Bookmarks, tabs, and passwords did not move automatically. Your ChatGPT history is separate and stays. Full walkthrough: ChatGPT Atlas shuts down August 9.
• OpenAI set August 30, 2026 as the DALL-E GPT's retirement date. That download deadline has now passed. Image generation itself is not going away -- ChatGPT Images continues. Custom GPTs with image generation were unaffected by that retirement, but OpenAI announced on September 11, 2026 that it is retiring custom GPTs on every plan.
• ChatGPT Sites entered public beta. You can build a simple website or app inside ChatGPT, but it is on Pro, Pro Lite, and Edu now (Plus following), and not on Free or Go.
• Two smaller upgrades landed the same week. Search across your chats, projects, and files got a rebuild on July 14 (all plans), and on July 15 the custom-instructions limit jumped to 5,000 characters for paid tiers.
• Nothing changes for basic chatting. The website, the phone apps, your saved conversations, and the free tier all work the same. Most people do not need to do anything.

What Actually Changed on July 9?

OpenAI shipped a bundle of changes at once, and it is easy to feel like ChatGPT got more complicated. Here is the plain breakdown of what each change means for a normal user, sorted by how likely it is to affect you.

If you only ever open chatgpt.com or the phone app to ask questions, the honest answer is that almost nothing changed for you. The reshuffle is mostly about the desktop app and a couple of features being wound down.

The New Desktop App and "ChatGPT Classic"

The biggest visible change is on the desktop. OpenAI released a new ChatGPT desktop app for macOS and Windows that puts three things in one place: Chat (normal questions and conversation), Work (an agent for longer tasks), and Codex (its coding tool). Because that new app is bigger and more feature-packed, OpenAI kept the older, simpler desktop app around under a new name: ChatGPT Classic.

You do not have to rush. According to OpenAI's release notes, if you already use the Codex app it updates into the new app automatically; if you use the previous ChatGPT desktop app, a prompt inside it offers the new version. ChatGPT Classic "continues to receive model updates, bug fixes, security patches," so it will keep working -- it just will not get the new Work and Codex agent features. If you liked the simpler app and only want to chat, staying on Classic for now is a reasonable choice.

Here is the difference in plain terms:

Group Chats Are Going Away

If you ever used ChatGPT group chats -- the feature that let you pull friends or coworkers into the same conversation with ChatGPT -- that is being retired. Beginning July 9, 2026, you can no longer create new group chats, turn an existing conversation into one, or join a group chat through an invite link on web, iOS, or Android.

What you keep matters here. Existing group chats "will remain available and can continue to be used for now," and when one eventually becomes read-only, OpenAI says you "retain access to the messages, files, and images already shared there." So you will not lose the content -- you just cannot start new group conversations. Your regular one-on-one ChatGPT conversations are completely unaffected. If a group chat holds something you care about, save or copy it out while you still can.

The Atlas Browser Stops Working August 9

This is the change most likely to catch someone off guard, and its deadline has passed. OpenAI deprecated Atlas, its web browser, and it was scheduled to stop working on August 9, 2026. If you switched to Atlas as your everyday browser and a copy still opens, treat it as borrowed time and move your data out now.

The important part: your browser data does not move by itself. Atlas bookmarks, open tabs, and browsing history "will not transfer automatically," and OpenAI's migration article adds that cookies and active sessions "cannot be imported into another browser" at all. You can export your cookies and passwords to the new ChatGPT desktop app and your bookmarks to Chrome, and you should manually save any pages or URLs you care about. One reassurance: your ChatGPT conversation history is stored separately from the browser and stays in your account.

We have moved the step-by-step version -- what survives, what does not, how to export bookmarks and import them into Chrome, and what to use instead -- to its own page: ChatGPT Atlas shuts down August 9. Curious what an "agent" browsing the web for you even means? See our plain-terms explainer on AI agents.

The DALL-E GPT Retirement Date: August 30, 2026

A second, smaller retirement landed after this page first published, and it came with a real "download your stuff" deadline that has now passed. In its July 31, 2026 release note, OpenAI said: "On August 30, 2026, we're retiring the official DALL-E GPT in ChatGPT. We encourage you to download any images you want to keep before then."

The scope is narrower than it sounds, so do not panic about losing image generation. What goes away is the one official DALL-E GPT -- the built-in custom GPT people used to open specifically to make pictures. Image generation itself stays in ChatGPT: OpenAI says "to continue creating or editing images, use ChatGPT Images," which is the image tool built into normal chat. It also confirmed that "user-created GPTs with image generation enabled are not affected" by the DALL-E retirement. That is still true of this retirement, but it is no longer the whole picture: on September 11, 2026 OpenAI said it is retiring custom GPTs across every ChatGPT plan and migrating them to plugins. No date has been published, and existing GPTs keep working until it arrives.

The only action item was that download, and its date has passed. Images you generated inside that GPT live in its conversations, so if you still see those conversations in your account, save anything you would miss to your device rather than counting on them staying.

What About ChatGPT Sites and ChatGPT Work?

These are the two new features in the bundle, and for a non-technical reader the key question is simply "do I get them, and do I need them?" Both are optional, and both skip the free tier.

ChatGPT Sites lets you turn an idea into a simple interactive website or lightweight app -- a dashboard, a tracker, a calendar -- without leaving ChatGPT, then preview and share it by URL. OpenAI put it in public beta for Pro, Pro Lite, and Edu users in July 2026, with Plus following "over the coming days" and no completion note published since, and it is not available on Free or Go. Public publishing and the wider beta are also not available in the EEA, Switzerland, or the UK at launch.

ChatGPT Work is an agent for longer, multi-step tasks -- research, analysis, and producing finished documents, spreadsheets, or presentations while you follow along and approve steps. On web and mobile it is rolling out to paid plans except Free and Go, with Pro, Pro Lite, Enterprise, and Edu first and Plus and Business following. If you are on the free tier, neither of these is something you are missing out on today. If you want the plain-English version of what an "agent" like Work actually does, our AI agent guide covers it.

Two Smaller Upgrades From the Same Week

Alongside the big reshuffle, OpenAI shipped two quieter improvements that are pure upside -- nothing is taken away, and one of them reaches everyone. Neither requires you to do anything; they simply work the next time you open ChatGPT.

The first is better search. On July 14, 2026, OpenAI rebuilt how you search your past chats, projects, images, and documents, so you can find them from one place starting in the ChatGPT sidebar. This one is for all plans, including Free, on web, iOS, and Android. If you have ever lost a conversation from weeks ago, this is the change most likely to help you.

The second is a bigger custom-instructions box. On July 15, 2026, OpenAI raised the custom-instructions character limit to 5,000 characters, up from 1,500. Custom instructions are the standing notes you give ChatGPT about how to answer you (your tone, your job, what to assume). The larger limit is for Plus, Pro, Enterprise, Business, and Education users -- not the Free tier. If you have never touched custom instructions, nothing changes; if you rely on them, you now have roughly three times the room.

A New Health Space (July 23)

Later in the month, OpenAI opened its biggest new consumer feature of July: Health in ChatGPT. On July 23, 2026, it went from a waitlist to open availability for all logged-in Free, Go, Plus, and Pro users in the US who are 18 or older, on web and iOS. You can connect Apple Health and your medical records so ChatGPT answers using your own lab results, medications, and activity -- and OpenAI says that connected data is not used to train its models or target ads. It is US-only and explicitly not a diagnosis tool. We cover exactly who gets it and whether it is safe in ChatGPT Health, explained.

Should You Care?

For most everyday users, this is a "good to know," not a "do something now." Basic chatting on the website and phone apps is unchanged, your history is safe, and the free tier still does what it did yesterday -- including the newly upgraded ChatGPT Voice that has since reached free users.

Do nothing if you only chat on the web or phone -- nothing you use went away. Check your setup if you use the desktop app (decide between the new app and Classic), rely on group chats (save what matters, since new ones are gone), used Atlas (it shut down on August 9, 2026), or kept pictures inside the DALL-E GPT (the download deadline was August 30, 2026). Ignore for now if you are on Free or Go and hear about Sites or Work -- those are paid features you are not missing.

The bottom line: OpenAI is consolidating everything into one bigger app and trimming a few side features, which is more about tidying its product line than changing your daily use. If all this app reshuffling has you weighing whether a paid plan is still worth it, our guides on whether ChatGPT Plus is worth it in 2026 and the best free AI chatbots walk through the trade-offs -- and if you want the model side of the same announcement, see GPT-5.6 Sol explained.

Where this went next (August 2026): the consolidation carried on into August. Free and Go got unlimited text chats, GPT-5.6 Luna and a Think button that reached the web on August 14; ChatGPT learned to find restaurant reservations; and the Mac app gained an opt-in memory of your other apps and websites called Computer History, which is Pro-and-above and, since August 20, available to Pro subscribers in Europe, the UK and Switzerland after a week of being excluded there.

Corrections and Updates

September 17, 2026: this page said any GPT you or someone else built "keeps working." That was OpenAI's wording about the DALL-E GPT retirement and it still holds for that one, but OpenAI has since announced a broader plan: its September 11, 2026 release note says it is "planning to retire custom GPTs across ChatGPT plans" with a migration path to plugins, and no date. The DALL-E section now points at our custom GPT retirement page. (Superseded September 18, 2026: OpenAI's retirement FAQ sets December 11, 2026 for Enterprise and says other plans may follow.)

August 30, 2026: the DALL-E GPT deadline on this page has arrived.

August 9, 2026: two of the deadlines on this page are now live.