Kimi K3Moonshot AI GLM-5.3Z.ai Our takeKimi K3 wins 3 of 4 categories, but GLM-5.3 is 2.8× cheaper for everyday text work. Pick Kimi K3 when quality matters most, GLM-5.3 at volume.
Overall65Best61
Coding74Best68
Writing6970Best
Support73Best67
Value5254Best
Input / 1M$3.00$1.40Best
Output / 1M$15.00$4.40Best
Blended / 1M$6.00$2.15Best
Context window1MBest1M
Open weightsYesYes
Released16 Jul 202614 Aug 2026
Your monthly bill
Kimi K3$1.2k
GLM-5.3$430Cheapest