Every few weeks the "best open model" crown changes hands. This week it's GLM-5.2, from the Chinese lab Z.ai — and unusually, the claim has teeth: it sits at #1 on the independent Artificial Analysis Intelligence Index. It's also MIT-licensed, has a million-token context, and ships with a genuinely clever architecture trick. So should you download it? That's where this gets interesting — because the full weights are 1.51 TB, and "run it locally" means something very specific here. We haven't run...