Grok 4.5
ECI#44
154Grok 4.5 is a closed-weights model from xAI, released July 8, 2026. It has an ECI score of 154 and ranks 44th of 254 tracked models. At the time of its release, it ranked 13th of 214 tracked models.
Grok 4.5 vs select alternatives
| Domain | Benchmark | Grok 4.5 | |||
|---|---|---|---|---|---|
ECI scoreBest score 169 | 154 | 152 | 154 | 155 | |
| Ranking | #44 | #51 | #45 | #42 | |
| Conceptual reasoning | ARC-AGI-2Best score 95% | ||||
ARC-AGI-1Best score 99% | |||||
| Games | Chess PuzzlesBest score 76% | ||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
FrontierMath Tier 4 (v2)Best score 100% | |||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Multimodal | Furniture Assembly BenchmarkBest score 83% | ||||
| Science | GPQA DiamondBest score 96% | ||||
| World knowledge | SimpleQA VerifiedBest score 76% |
