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Why ChatGPT Keeps Forgetting personal preference. What to do ?
Many long-time ChatGPT users have reported a strange and frustrating issue: ChatGPT suddenly seems to have forgotten everything. The AI assistant that used to remember preferences, personal details, and context across sessions now acts like a brand-new model every time you start a new chat.
Users across devices — web, mobile, and desktop — have begun asking: Did OpenAI change how ChatGPT memory works, or is this a temporary bug?
What Users Are Experiencing
Reports began surfacing around late July 2025. Here’s what users are noticing:
- No Persistent Memory Across Chats – ChatGPT still remembers information within the same conversation but completely resets when a new chat starts.
- No Warning or Update Notice – The change appeared suddenly, with no notification from OpenAI.
- Changed Personality or “Dry” Responses – Many users noticed ChatGPT sounding more robotic, giving short or generic replies instead of the familiar conversational tone.
- Project Chats and Instructions Missing – Some users reported missing chats inside projects, vanished personal instructions, and even reverted information like old names or saved lists.
Common Reactions from the Community
Many regular and paying users expressed frustration:
“I use ChatGPT every day for my work. It remembered my style, my goals, and my lists. Now it feels like starting from scratch.”
“I had personalized instructions and memories stored, and now it’s all gone. This makes the assistant less reliable for long-term use.”
Others shared possible workarounds:
- Logging Out and Back In: A few users reported that logging out, clearing cache, and logging back in restored their assistant’s personality temporarily.
- Switching Model Versions: Some found that changing back to GPT-4o instead of other model options brought their memories and GPT’s personality back.
However, these solutions don’t seem to work consistently across users.
Possible Causes: Bug or System Change?
While OpenAI has not released an official statement, there are a few possibilities:
- Temporary Memory Service Outage: The memory system could be offline or under maintenance.
- Privacy and Safety Updates: OpenAI might be modifying how personal data and memory are stored to comply with global privacy laws.
- Data Sync Errors: Some users mentioned that changes made on one device (like message edits) disappeared after reopening the app, suggesting a synchronization issue across servers.
How to fix ChatGPT Suddenly Forgot Everything ? Android iPhone App and PC Users
If you’re affected, here are a few troubleshooting steps to consider:
- Start a New Chat Session: Sometimes older threads get stuck. A new chat might reload your account’s memory features.
- Clear Cache and Reinstall: On mobile or desktop, clearing app data and reinstalling may fix sync issues.
- Switch Model to GPT-4o: Check your model selector. Some memory functions are tied to specific models.
- Send Feedback to OpenAI: Use the “Help & Feedback” option to report the issue. More reports help them identify and prioritize the fix.
Final Thoughts
ChatGPT’s memory feature is one of the most valuable tools for users who depend on continuity and personalization. The sudden loss of memory has understandably caused concern among both free and paid subscribers.
Until OpenAI provides an official fix or explanation, users can try the above steps and keep backups of important information outside of the chat. It’s likely that OpenAI will restore or improve the feature soon as part of upcoming system updates.
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