You give it everything at once: the codebase, the meeting notes, the screenshots, even an hour of video, and ask your question. It reads and watches all of it in one conversation, thinks the problem through step by step, and comes back with the answer or the finished work: a patched repository, a research write-up with charts, a worked-out plan.
Two things make that possible. Its memory is vast: it holds around a million tokens in one session, roughly a dozen novels' worth, so a whole project fits without chopping it into pieces. And it does not stop at reading. It plans, uses tools, runs long stretches of work on its own, and checks its own results as it goes.
This is Moonshot's flagship and the largest open-weight release to date: a 2.8 trillion parameter system in which only a small fraction wakes up for each word. The weights are public under Moonshot's own Kimi K3 license rather than a standard open license, so companies should read the terms before building on it.