Grok 4.6
ECI#17
156Grok 4.6 is a closed-weights model from xAI, released August 12, 2026. It has an ECI score of 156 and ranks 17th of 247 tracked models. At the time of its release, it ranked 14th of 241 tracked models. At $2/Mtok for input tokens and $6/Mtok for output tokens, it is priced on par with similarly-capable models.
Input price$2 / 1M tokens
Output price$6 / 1M tokens
ParametersUnknown
Training computeUnknown
Grok 4.6 vs select alternatives
Reasoning
| Domain | Benchmark | Grok 4.6 | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 156 | 154 | 156 | 156 | |
| Ranking | #17 | #30 | #18 | #19 | |
| Conceptual reasoning | ARC-AGI-2Best score 95.0% | ||||
ARC-AGI-1Best score 98.5% | |||||
| Games | Chess PuzzlesBest score 72.0% | ||||
Mystery Game PuzzlesBest score 84.0% | |||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 93.7% | ||||
FrontierMath Tier 4 (v2)Best score 97.6% | |||||
OTIS Mock AIME 2024-2025Best score 100.0% | |||||
| Science | GPQA DiamondBest score 95.8% | ||||
| World knowledge | SimpleQA VerifiedBest score 75.6% |
