Why did ChatGPT forget what I said earlier in the conversation?
ChatGPT forgets earlier details because it can only work with the text that currently fits in its context window, and in long chats older material gets trimmed, summarized or simply drowned out by newer text. The same is true of most assistants.
What to do:
- Restate the key rules or facts in a new message.
- Ask it to summarize the important points, check them, and paste that summary into a fresh chat.
- Keep one topic per conversation.
- Put lasting preferences in custom instructions, or in a project if your plan has them.
- If memory is available, review what it has saved and correct anything wrong.
Limits differ by plan and change over time, so check OpenAI's current help pages.
Related answers
How do I stop ChatGPT from remembering things about me?
You can limit what ChatGPT remembers by reviewing or deleting saved memories, turning memory off, or using temporary chats, which OpenAI describes as not creating memories.
privacy-safety
Is it safe to share a ChatGPT conversation link?
A shared chat link can be opened by anyone who has the link, so only share conversations you would be comfortable showing to a stranger.
privacy-safety
Why does ChatGPT give short, lazy answers or leave parts out?
ChatGPT gives short or incomplete answers when your request is vague about length, when the task is very large, or when a long chat has crowded out your original instructions.
troubleshooting