GLM-5.3-Flash
ECI#41
151GLM-5.3-Flash is an open-weights model from Z.ai (Zhipu AI), released August 20, 2026. It has an ECI score of 151 and ranks 41st of 249 tracked models. At the time of its release, it ranked 37th of 245 tracked models.
GLM-5.3-Flash vs select alternatives
| Domain | Benchmark | GLM-5.3-Flash | |||
|---|---|---|---|---|---|
ECI scoreBest score 166 | 151 | 150 | 152 | 150 | |
| Ranking | #41 | #48 | #39 | #44 | |
| Games | Chess PuzzlesBest score 72% | ||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
FrontierMath Tier 4 (v2)Best score 98% | |||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Science | CritPtBest score 32% | ||||
SciCodeBest score 62% | |||||
GPQA DiamondBest score 96% | |||||
| Software engineering | Text Arena (Coding)Best score 1797 | 1604 | 1509 | 1593 | 1402 |