You do not. Platform memory does not leave the platform that made it. What moves is a record you own. A Pupul profile compiles into one block that any assistant capable of reading text can use, so switching models means handing over one record, not rebuilding months of context.
A personal profile is free to start. You choose who reads it, and you can take it back from any reader at any time, free, forever.
Every major assistant now builds a memory of you. It is genuinely useful, right up to the day you want to use a different assistant. Then you discover the plain fact underneath the feature: platform memory does not leave the platform that made it.
What ChatGPT remembers about you lives inside ChatGPT. What Gemini learns stays in Gemini. None of it is designed to be handed to a competitor, because keeping it is the point.
A better model ships somewhere else and the real cost of trying it is not the subscription. It is re-explaining your work, your family, your projects, and your preferences from a blank chat box.
A Pupul profile is a record you own, held outside every assistant. It compiles into a block any assistant that reads text can use. The models compete. Your context does not reset.
A Pupul profile is a dated, append-only record of you that lives in your hands. Here is how it becomes portable memory.
Open the personal room and create your profile. A personal profile is free to start, and it starts honestly small, because it is made of time that actually passed. There is no shortcut to a long record, which is exactly what makes a long one worth something.
Write entries as they happen. Each one is dated the day it lands. You can bring old writing into your profile and keep it there, so nothing you have already written is wasted, but imported history never counts toward how long the profile has really existed. The record's age is real or it is nothing.
When you want an assistant caught up, the profile compiles into a plain block of text. No vendor format, no export wizard, no API key. If a model can read text, it can read you.
The same profile reads in Claude, ChatGPT, Gemini, Copilot, and Perplexity. Paste it at the start of a conversation and the model opens already knowing what months of chats would otherwise have to teach it. Try a new model on Tuesday, go back on Wednesday. The record does not care which one is winning this quarter.
You choose when to hand the profile over, and you can take it back from any reader at any time, free, forever. Portability without revocation is just leakage with better marketing. This is both.
Every platform memory feature answers the question "how do we know you better than our competitor does?" A Pupul profile answers a different question: "what is true about you, on the record, over time?" That answer is useful to any model, which is why it can travel between all of them.
The definition worth keeping: a portable AI memory is a record of you that you own, that any assistant can read, and that you can take back. Platform memory fails the first and last test by design. A document on your laptop passes the first test but nobody vouches for when it was written. A Pupul profile passes all three, because entries are dated the moment they land and can never be edited or reordered, by anyone, including us.
This also changes what switching costs. Today the real switching cost between assistants is not price, it is accumulated context. When the context lives in a record you carry, the cost of trying the next model drops to the length of one paste. That keeps every vendor honest, which is the whole idea.
Start your profile now and it starts aging now. Free to start, yours forever, readable by every assistant you will ever try.