Can an AI read your whole file at once?

Can an AI read your whole file at once?
The question sounds technical, but it decides whether an agent is fit for your work. An AI has no memory like a person. It has a window: whatever fits in, it sees at the same time. Whatever does not fit in does not exist for it. An agent that sees only the last three mails of a thread writes a reply that does not know the contract in the attachment.
The window is measured in tokens, pieces of words. By our measurement on a German text there are about 1.7 tokens per word.
In daily use the model in the AI-run back office works with 40,960 tokens. By our own calculation that is about 24,000 German words — enough for a contract with its annexes or a long mail thread.
For a large file it switches: the same model gets its whole window, 262,144 tokens. That is about 154,000 words, a folder full of documents at once. The switch takes seconds.
The computing happens on our own hardware. The file goes to no cloud provider, and nobody outside reads along.
For choosing an AI this means: do not only ask how clever it is. Ask how much it sees at once — and where it does the computing. This is how your back office, run by AI works.
How many pages does the thickest file in your office have?














