Neura Intelligence Index
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Grok-4 Heavy
🇺🇸xAI
Neura Index
85.6
Rank #13—
lowCategory Profile
Benchmark Scores (3)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 88.4 | verified |
| Humanity's Last Exam | 50.7 | verified |
math
| Benchmark | Score | Source |
|---|---|---|
| AIME 2025 | 100 | verified |
Performance History
Similar Models
Frequently Asked Questions about Grok-4 Heavy
What is Grok-4 Heavy's Neura Intelligence Index score?▾
Grok-4 Heavy by xAI scores 85.6 out of 100 on the Neura Intelligence Index, ranking #13 among tracked AI models. This composite score is computed from 3 individual benchmarks across coding, math, reasoning, and language categories.
Is Grok-4 Heavy open source?▾
No, Grok-4 Heavy is a proprietary model by xAI. It is only accessible via their API.
What benchmark does Grok-4 Heavy perform best on?▾
Grok-4 Heavy achieves its highest score on AIME 2025 with a score of 100.0%. This benchmark evaluates american invitational mathematics examination 2025 — competition-level math problems.