GLM-5.1
ECI#48
150GLM-5.1 is an open-weights model from Z.ai (Zhipu AI), released April 7, 2026. It has an ECI score of 150 and ranks 48th of 249 tracked models. At the time of its release, it ranked 15th of 201 tracked models.
GLM-5.1 vs select alternatives
| Domain | Benchmark | GLM-5.1 | |||
|---|---|---|---|---|---|
ECI scoreBest score 166 | 150 | 146 | 149 | 149 | |
| Ranking | #48 | #70 | #50 | #51 | |
| Agent | Vending-Bench 2Best score $11,182 | $5,634 | $4,432 | $4,254 | $35 |
| Conceptual reasoning | SimpleBenchBest score 82% | ||||
| Games | Chess PuzzlesBest score 72% | ||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Science | GPQA DiamondBest score 96% | ||||
| Software engineering | Text Arena (Coding)Best score 1797 | 1509 | 1435 | 1479 | 1357 |
SWE-bench VerifiedBest score 83% | |||||
| World knowledge | SimpleQA VerifiedBest score 76% |
