Grok 4.5
ECI#32
154Grok 4.5 is a closed-weights model from xAI, released July 8, 2026. It has an ECI score of 154 and ranks 32nd of 249 tracked models. At the time of its release, it ranked 14th of 226 tracked models.
Grok 4.5 vs select alternatives
| Domain | Benchmark | Grok 4.5 | |||
|---|---|---|---|---|---|
ECI scoreBest score 166 | 154 | 152 | 154 | 154 | |
| Ranking | #32 | #38 | #33 | #31 | |
| Conceptual reasoning | ARC-AGI-2Best score 95% | ||||
ARC-AGI-1Best score 99% | |||||
| Games | Chess PuzzlesBest score 72% | ||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
FrontierMath Tier 4 (v2)Best score 98% | |||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Science | GPQA DiamondBest score 96% | ||||
| Software engineering | Text Arena (Coding)Best score 1797 | 1556 | 1374 | 1517 | 1539 |
| World knowledge | SimpleQA VerifiedBest score 76% |
