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GLM-5.3

ECI#22
156
Z.ai (Zhipu AI)
Aug. 14, 2026
Closed weights

GLM-5.3 is a closed-weights model from Z.ai (Zhipu AI), released August 14, 2026. It has an ECI score of 156 and ranks 22nd of 251 tracked models. At the time of its release, it ranked 18th of 244 tracked models.

GLM-5.3 vs select alternatives

DomainBenchmark
GLM-5.3
Z.ai (Zhipu AI)
Aug. 14, 2026
Closed weights
Z.ai (Zhipu AI)
Jun. 16, 2026
Open weights
DeepSeek
Aug. 13, 2026
Open weights
Alibaba
Sep. 1, 2026
Closed weights
ECI scoreBest score 167
156152155155
Ranking#22#43#24#26
Agent
Vending-Bench 2Best score $15,515
$8,164$8,314
Games
Chess PuzzlesBest score 72%
21%
21%
47%
40%
Mystery Game PuzzlesBest score 84%
33%
19%
43%
n/a
Mathematics
69%
59%
65%
66%
29%
29%
27%
34%
OTIS Mock AIME 2024-2025Best score 100%
91%
86%
99%
100%
Science
GPQA DiamondBest score 96%
91%
92%
92%
92%
Software engineering
Text Arena (Coding)Best score 1800
161415931581
World knowledge
SimpleQA VerifiedBest score 76%
41%
34%
53%
47%

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