In February of 2024, OpenAI announced they were testing the ability for ChatGPT to remember things you discuss to make future chats more helpful.

“We’re testing memory with ChatGPT. Remembering things you discuss across all chats saves you from having to repeat information and makes future conversations more helpful.”

“As you chat with ChatGPT, you can ask it to remember something specific or let it pick up details itself. ChatGPT’s memory will get better the more you use it and you’ll start to notice the improvements over time. […] “If you want ChatGPT to forget something, just tell it. You can also view and delete specific memories or clear all memories in settings.”

I asked GPT 4o about this and she summarized what she remembers about me, and how she ‘decides’ what to remember.