The best model you can run on your own servers
Best open model to run yourself
GLM-5.3
Z.ai (Zhipu) · Maximum thinkingMax
GLM-5.3 is the strongest freely downloadable model that still fits on a single AI server. Its licence lets you use it commercially, so your documents never have to leave your own or an EU data centre. Download GLM-5.3 from Z.ai and run it on one 8-GPU server, with thinking set to the maximum. If that's too big, the Flash version is half the size and even better at Swedish.
GLM-5.3 is #1 among open models on Artificial Analysis' Coding Agent Index (53.6) and Terminal-Bench 4.0 (41.9), with an AA Intelligence Index of 44.8 (max). At 744B total / 40B active it needs ~780 GB at 8-bit, so it fits one 8×H200 node. The licence is modified MIT (commercial use allowed; only API providers with more than $10B revenue need a security review).