A Model's Memory Is Vendor Lock-In

How easy is it to switch models today? Copy your prompts out, export your history, done. As easy as changing clothes.

Because models have no memory. Computation, at its core, remembers nothing — every bit of memory is what you hand it inside the current conversation. It knows you today; tomorrow it resets to zero. If you leave, it doesn’t even have the standing to ask you to stay.

That window is closing.

OpenAI’s memory has shipped through three generations, and the newest one records what you do on your computer, not just what you say to it. Huawei built a memory layer into HarmonyOS. Xiaomi is building cross-device memory. Apple rebuilt Siri into a Siri with memory. Everyone is installing memory into their models. Once it’s installed, the game changes.

If a model really has memory, switching models becomes like firing an employee. How hard is it to fire an old hand who knows everything? His head holds every fact about your company. Today this employee is well-behaved — he leaves the memory behind — because the memory was never his. Once memory lives inside the model, every switch of vendor means handing the whole company over again, from scratch.

Someone will say: data can be exported. It can. You file an export request, wait weeks, and receive a pile of JSON. What is that? A departing employee’s handover notes — in a format the new hire can’t read, so you pay engineers for months to clean, convert, and fine-tune. The right to export was given to you. The ability to leave was not.

None of this is new. iCloud doesn’t sync to Huawei Cloud, and we’ve all gotten used to it. Next it’s Apple memory on iPhones, Xiaomi memory on Xiaomi phones, Huawei memory on Huawei phones, each one different. Whichever system your years of conversation grew in — that’s whose person you are.

So what do you do? Pull your memory out while it still comes out, and make it yours. Thousands of hours of my conversation logs, extracted by my own scripts, sitting on my own drive. That’s not technical purism. That’s moving yourself out before the door locks.

The brain belongs to the vendor — billions of dollars of training, you can’t take it and shouldn’t try. The memory is yours — provided you reach out and take it.

You can switch models. You cannot switch memory you no longer hold. The day you find you can’t leave, it won’t be because the model got smarter. It will be because your memory got fenced in.

Fengyu WANG
Fengyu WANG

Markets, investing, engineering — one person, one underlying logic.