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GLM-5.3 vs DeepSeek V4 Pro

GLM-5.3Z.ai
DeepSeek V4 ProDeepSeek
Our take

GLM-5.3 wins 4 of 4 categories, but DeepSeek V4 Pro is 1.1× cheaper for everyday text work. Pick GLM-5.3 when quality matters most, DeepSeek V4 Pro at volume.

Overall61Best53
Coding68Best56
Writing70Best61
Support67Best59
Value54Best47
Input / 1M$1.40$1.32Best
Output / 1M$4.40$3.96Best
Blended / 1M$2.15$1.98Best
Context window1M1MBest
Open weightsYesYes
Released14 Aug 202613 Aug 2026

Your monthly bill

50k
GLM-5.3$430
DeepSeek V4 Pro$396Cheapest
List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.