ChatGPT June 2026 Update — GPT-5.5 Is Now the Default and Memory Got Smarter

OpenAI made several changes to ChatGPT in June 2026. The most significant: GPT-5.2 was retired on June 12, and GPT-5.5 is now the default model on every plan — including the free tier. For most people, this means ChatGPT just got noticeably better without any action on your part.

Here is a plain-English breakdown of what changed and what it means for you.

What changed in ChatGPT in June 2026

GPT-5.5 is now the model running your conversations by default. OpenAI describes it as smarter, clearer, and more concise — it uses context from your conversation more efficiently and gives tighter answers across most topics. If a conversation previously used GPT-5.2, it automatically continues on the equivalent GPT-5.5 model.

GPT-4.5 is also being retired on June 27, 2026, following a 30-day sunset window. If you had any workflows that specifically selected GPT-4.5, those will need to switch to GPT-5.5.

Who notices this: Anyone who has been using ChatGPT long enough to remember how it felt 12 months ago. The output quality gap between free and paid has narrowed again. The free tier in June 2026 is meaningfully better than it was in early 2025.

Source: OpenAI ChatGPT Release Notes

ChatGPT memory got a major upgrade

ChatGPT has had memory since 2024, but the June 2026 update makes it substantially more useful. Plus and Pro users now get twice the memory capacity — meaning ChatGPT can remember more about your preferences, projects, and working style across conversations.

Two new controls shipped alongside the capacity increase. You can now visit your memory summary page and delete individual memories. And if you want to start fresh entirely, selecting “Delete and turn off memory” from the three-dot menu removes everything and pauses future memory storage.

What this means in practice: If you tell ChatGPT your writing style preferences, the tools you use, or your client’s name, it holds onto that context longer and uses it more consistently in future conversations. You no longer need to re-explain the same background details every session.

Who benefits most: Anyone who uses ChatGPT regularly for work — writing, research, customer communication, or project planning.

ChatGPT now works inside Excel and Google Sheets

ChatGPT for Excel and Google Sheets is now available globally for Enterprise, Edu, and K-12 workspaces. It appears as a sidebar inside the spreadsheet app — you can ask questions about your data, ask it to write formulas, or have it summarize what a column means without copying anything out.

This feature was in limited testing earlier in 2026. The global rollout means any organization on ChatGPT Enterprise, Edu, or K-12 can now activate it through their admin settings.

What you can do with it: Ask “what does this formula do?” and get a plain-English explanation. Ask “summarize the trend in column C” and get a paragraph. Ask “write a VLOOKUP for this use case” and get working code.

Who this is for: Business and education users with Enterprise, Edu, or K-12 access. Not available on personal Plus or Pro plans yet.

A new security feature: Active Sessions

OpenAI added Active Sessions — a way to see every device and app currently logged into your ChatGPT account. Each session shows the device type, approximate location, app used, and sign-in time. You can sign out of any session you do not recognize directly from the list.

This matters because ChatGPT accounts hold conversation history, custom instructions, and in some cases payment information. If you have ever logged in on a shared computer or a device you no longer own, Active Sessions lets you clean that up now.

Where to find it: Account settings → Security → Active Sessions.

Should you upgrade to ChatGPT Plus or Pro?

The free tier in June 2026 is better than it has ever been. GPT-5.5 is now available to everyone, and the base memory features are included at no cost. If you are not sure how to get started with ChatGPT at all, our beginner’s guide to ChatGPT walks through signup and the first things to try.

Plus ($20/month) adds: Twice the memory capacity, higher usage limits, priority during peak hours, and access to voice mode.

Pro ($200/month) adds: Unlimited access to the most capable models, higher output limits, and early access to new features.

Honest recommendation: If you use ChatGPT for less than an hour a day on personal tasks, the free tier covers it. If ChatGPT is part of your daily work — writing, research, client communication — Plus pays for itself quickly. Pro is for users who genuinely max out Plus limits, which most people do not.

For a head-to-head comparison of how ChatGPT stacks up against Claude and Gemini right now, see our ChatGPT vs Claude vs Gemini guide.

Frequently Asked Questions

Q: Is GPT-5.5 available on the free plan?

Yes. As of June 12, 2026, GPT-5.5 is the default model on all ChatGPT plans, including the free tier. GPT-5.2 has been retired. Free users automatically received the upgrade with no action required.

Q: What happened to GPT-4.5?

GPT-4.5 is being retired on June 27, 2026, following a 30-day sunset window. OpenAI announced the timeline in advance. If you have any custom GPTs or workflows that specifically call GPT-4.5, they will need to be updated to use GPT-5.5 before that date.

Q: Does the memory upgrade apply to free accounts?

The June 2026 memory capacity increase — double the previous limit — applies to Plus and Pro accounts. Free accounts have a smaller memory capacity. The new controls for deleting individual memories and turning memory off entirely are available on all plans.

Q: Is the Excel and Google Sheets integration free?

No. ChatGPT for Excel and Google Sheets is currently available only for Enterprise, Edu, and K-12 workspaces. It is not included in personal Plus or Pro subscriptions. Activation is done through your organization’s admin settings.

Source: OpenAI Release Notes