Grok 4.6
ECI#28
156Grok 4.6 is a closed-weights model from xAI, released August 12, 2026. It has an ECI score of 156 and ranks 28th of 260 tracked models. At the time of its release, it ranked 16th of 240 tracked models.
Grok 4.6 vs select alternatives
| Domain | Benchmark | Grok 4.6 | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 156 | 154 | 156 | 156 | |
| Ranking | #28 | #42 | #27 | #24 | |
| Conceptual reasoning | ARC-AGI-2Best score 95% | ||||
| Games | Chess PuzzlesBest score 74% | ||||
Mystery Game PuzzlesBest score 84% | |||||
| 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% |
