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DeepSeek V4.1 Flash 1017 vs GLM-5.3-Flash

DeepSeek V4.1 Flash 1017DeepSeek
GLM-5.3-FlashZ.ai
Our take

DeepSeek V4.1 Flash 1017 wins 1 of 1 categories, but GLM-5.3-Flash is 2.2× cheaper for everyday text work. Pick DeepSeek V4.1 Flash 1017 when quality matters most, GLM-5.3-Flash at volume.

Overall–55
Coding74Best69
Writing–64
Support–67
Value–60
Input / 1M$0.30$0.15Best
Output / 1M$1.20$0.50Best
Blended / 1M$0.53$0.24Best
Context window1MBest1M
Open weightsYesYes
Released17 Oct 202626 Aug 2026

Your monthly bill

50k
DeepSeek V4.1 Flash 1017$105
GLM-5.3-Flash$47.50Cheapest
List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.