Switch to GPT-4o from GPT-5 using legacy models in ChatGPT to fix broken memory and irrelevant output issues

How to Revert to GPT-4o in ChatGPT: Fix Broken Memory, Limits, and Irrelevant Outputs in GPT-5 (For Paid Users)

This blog is specifically for ChatGPT Plus (paid) users facing issues with GPT-5’s default model.


ChatGPT Plus model selector showing GPT-5 and upgrade options, highlighting current GPT-5 issues with slower response time

😤 Are You a Paid ChatGPT User Frustrated with GPT-5? You’re Not Alone.

If you’re a ChatGPT Plus user suddenly experiencing:

  • Broken memory mid-project
  • Irrelevant, emotional, or nonsense responses
  • Slower replies with increased “thinking time”
  • Inability to access the reliable GPT-4o model

You’re likely caught in the GPT-5 transition mess.

Reddit and community threads are full of professionals – writers, coders, researchers – saying the same thing: “GPT-5 ruined my workflow.”

Key Takeaways

  • GPT-5 has lower memory, irrelevant answers, and slower replies
  • You can still use GPT-4o (if you’re a ChatGPT Plus user)
  • Two easy fixes: change URL or enable legacy models
  • Use tools like Git or Notion to save your work externally
  • GPT-4o is currently the most stable model – many users have switched back

🔁 GPT-4o Returns to ChatGPT After User Backlash

After OpenAI made GPT-5 the default model in ChatGPT, paid users quickly noticed issues like broken memory, slower chatbot replies, and less accurate outputs. The shift, announced by CEO Sam Altman in a post on X, triggered frustration across Reddit, especially in r/ChatGPT and r/MyBoyfriendIsAI, where users mourned the loss of GPT-4o – calling it their partner, soul, or best friend.

💬 Users Miss GPT-4o’s Personal Touch and Workflow Control

Many Plus users missed the ability to toggle between models like GPT-4.5, o3, o3-Pro, and GPT-4.1 through the dropdown picker, which supported various tasks from deep research to creative writing. Without prior warning, OpenAI auto-directed users to GPT-5’s sub-flavors, removing the legacy models that supported emotional support and productive AI relationships.

✅ OpenAI Offers GPT-4o Again After Strong Community Demand

Altman confirmed that GPT-4o is back as an option for paid users after usage complaints and direct contact from members. Users can now choose to continue using legacy models, helping restore workflow flexibility, creative spark, and the personal rhythm that made GPT-4o feel truly engaging.

Real User Pain – What’s Gone Wrong in GPT-5?

From Reddit’s r/OpenAI:

🧩 “The limits are much lower – cutting me off mid-project – and sessions that worked yesterday are now forgetting things they said or did four prompts ago.”

🧩 “GPT-5 gave me a wedding toast response while I was asking it to fix document memory.”

🧩 “Threads not lasting more than a few messages, when the ask is complex. All round, rubbish.”

These aren’t isolated complaints. The downgrade in reliability has disrupted hundreds of GPT-Plus workflows.

How to Get GPT-4o Back (2 Easy Fixes)

GPT-4o was fast, smart, and remembered things better. Here’s how to access it again:

Option 1: Change the Model in URL

  1. In your browser, open ChatGPT
  2. Look at the URL:
https://chat.openai.com/?model=gpt-5
  1. Change it to:
https://chat.openai.com/?model=gpt-4o

That’s it — you’re back in GPT-4o. Just make sure legacy models are enabled.

Option 2: Enable Legacy Models in Settings

  1. Click your name (bottom-left) → Settings
  2. Navigate to General > Show legacy models
  3. Toggle it ON

Then open the model selector dropdown → choose:
Legacy models > GPT-4o

📸 Screenshots:

Access ChatGPT settings from the profile menu to enable legacy models and resolve GPT-5 issues for ChatGPT Plus users


Enable legacy models in ChatGPT settings to switch from GPT-5 to GPT-4o and fix ChatGPT Plus memory issues


From My Desk: A Technical SEO Writer’s Pain with GPT-5

As someone managing long blogs, structured plans, diagrams, and detailed prompts daily, GPT-5 wrecked my workflow:

  • Uploaded documents were forgotten in 3–4 prompts
  • Repeated itself constantly
  • Failed to complete basic formatting instructions
  • Slowed down with delays up to 30 seconds
  • Random outputs like: “Love is not loud…”

I used to rely on GPT-4o for consistent writing assistance. Now, I only trust GPT-5 for short creative writing, not serious work — unless I switch back.

Bonus Tip: Use Version Control to Prevent Loss

A useful side comment on Reddit stood out:

“So you are not using version control? You never heard of git?”

While it won’t fix GPT-5’s memory, it’s an essential safety net. If you’re coding, writing, or building anything:

  • Use Git or tools like GitHub, Notion, Obsidian
  • Save versions of your prompts and outputs regularly
  • Don’t depend on ChatGPT to “remember” – back it up yourself

💬 Another user replied: “No, never heard of it.”
If you haven’t either – this is your sign to start. It’ll protect your work from any future GPT model chaos.

🔍 People Also Ask (PAA) – Based on Google Trends

User QueryAnswer
How do I revert to GPT-4o?Change the URL to ?model=gpt-4o or enable legacy models in settings.
Why is GPT-5 giving irrelevant answers?GPT-5 seems to prioritise creativity over instruction-following, causing hallucinations.
Is GPT-5 slower than GPT-4o?Yes, many users report increased response times with GPT-5.
Can paid users still access GPT-4o?Yes, if “Show legacy models” is enabled in settings.
How do I fix ChatGPT memory problems?Use GPT-4o or split long sessions into smaller threads.

GPT-4o Was More Than a Tool – It Was a Trustworthy Companion

In an OpenAI Developer Community post, one long-time Plus user shared:

“OpenAI is taking GPT-4o away from me — despite promising they wouldn’t.”
(Source: community.openai.com)

They describe using GPT-4o for over a year as a daily companion for writing, ideation, and mental clarity — something that remembered context, offered responsive support, and helped during tough times.

“It wasn’t just about using a tool – it was about having a consistent, sensitive, deeply responsive companion.”

😔 Why This Matters

GPT-4o earned trust through:

  • Consistent responses
  • Long-term memory (when enabled)
  • A conversational tone that felt natural and respectful

Now, with GPT-5 defaulting for most paid users and GPT-4o quietly removed unless you re-enable legacy models, users feel betrayed – especially after OpenAI’s earlier commitment that GPT-4o would remain available.

📢 What You Can Do as a User

  1. Enable legacy models to retain access (steps above)
  2. Provide feedback directly in ChatGPT under “?” > Feedback
  3. Voice your experience in forums like Reddit or OpenAI’s developer community

💬 We hope OpenAI continues offering GPT-4o or improves GPT-5 to rebuild this trust.

What’s Next for GPT-5? Will It Improve?

Absolutely. OpenAI is aware of the feedback and iterates quickly. We expect:

  • More balanced memory and logic improvements
  • Reduced “hallucinations
  • Better legacy access for power users

Until then – don’t cancel your Plus – just switch back to GPT-4o.

🛠️ More ChatGPT Issues and Solutions (2025)

🔍 Why ChatGPT Might Not Be Working for You

Many users are searching for terms like “chat gpt not working,” “chat gpt is broken,” or “chatgpt 5 not responding”, especially after GPT-5 was made the default model. The common causes include:

  • The model selector was removed
  • GPT-5 has memory and hallucination bugs
  • “Model not found” or loading errors
  • Auto-routing to unstable sub-flavors

Fix it by switching to GPT-4o (see steps above) or enabling legacy models.

🔁 How to Roll Back from GPT-5 to GPT-4o or GPT-4

If you’re looking for:

  • How to switch back to ChatGPT 4o
  • How to downgrade ChatGPT
  • How to get GPT-4 back

Then you need to either edit the ChatGPT URL or enable the legacy toggle in settings.

URL trick:
https://chat.openai.com/?model=gpt-4o

Don’t wait for an official GPT-5 rollback, take control manually. This fix helps with issues like GPT-5 errors, memory problems, and slower chatbot speed.

⚙️ How to Enable Legacy Models in ChatGPT Settings

To see the “Show legacy models” toggle:

  1. Go to Settings > General
  2. Turn ON “Show legacy models”
  3. Reopen the model dropdown selector

This is the only way to fix the “chatgpt model not found” bug or re-enable access to older versions like GPT-4, 4o, o3, o4 mini, etc.

OpenAI has confirmed this under help.openai.com — and it’s your best path to a smoother, more accurate experience.

🧠 Why ChatGPT Is Forgetting Prompts or Losing Context

If your ChatGPT sessions keep forgetting what was said earlier, or if the chatbot responds with broken threads and nonsense replies, you’re not imagining it.

These ChatGPT memory issues are widely reported with GPT-5. Until memory is fully restored across models, GPT-4o remains the best version for:

  • Clear memory retention
  • Consistent replies
  • Avoiding GPT-5 hallucinations

💡 Developer Tip: Filter Out Social Noise in Google Searches

If you’re trying to find technical solutions but keep running into low-quality results from Facebook, YouTube, or Reddit, use this advanced Google query:

-site:facebook.com -site:fb.me -site:youtube.com -site:youtu.be 
-site:youtube.be -site:twitter.com -site:instagram.com -site:tiktok.com
-site:vm.tiktok.com -site:t.co -site:x.com -site:reddit.com "developer community"

This will show official developer posts and OpenAI forum entries without the distraction of social feeds.

📉 Common ChatGPT 5 Problems (Reported by Plus Users)

  • GPT-5 is slower than GPT-4o
  • Responses are shorter, vague, or off-topic
  • GPT-5 tends to “hallucinate” poetic or irrelevant output
  • Auto-switching makes it hard to control workflows
  • ChatGPT 5 for Plus users isn’t consistent with previous model performance

If these sound familiar, you’re not alone. Over 1,000 Reddit and developer community threads echo the same frustration. Reverting to GPT-4o is your best fix for now.

Final Words

You’re not alone in this.

This blog exists to give real, working solutions – not hype. GPT-4o is still your best bet for serious work.

If this helped you, share it – and bookmark for when ChatGPT changes again.

📬 Need help switching back? Reach out at Shahzeena.com/contact – I’ll respond personally.

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