A Juejin author says he was testing Kimi K3 one day and the next day "heard" it had been taken off sale, adding that GLM 5.2 has stayed in a purchase-limited state since becoming popular. Neither claim is backed by vendor confirmation, and the author himself frames the K3 halt as hearsay. The bulk of the post is a hands-on test: over 12 rounds of dialogue he had K3 build a networked 3D billiards game using Three.js and hand-written physics; the first-round output had serious modeling problems (no pockets cut into the table) and erratic camera control, and only after many revisions did it reach a playable state. He rates K3 as broadly top-tier among domestic models with good scene modeling and summary documentation, but criticizes the poor first draft, long iteration, heavy token use and weak autonomous planning.