Neura Intelligence Index
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Grok 4 Fast
🇺🇸xAI10mo
Neura Index
68.5
Rank #74—
mediumCategory Profile
Benchmark Scores (5)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 85.7 | verified |
| Humanity's Last Exam | 20 | verified |
math
| Benchmark | Score | Source |
|---|---|---|
| AIME 2025 | 92 | verified |
general
| Benchmark | Score | Source |
|---|---|---|
| SimpleQA | 95 | verified |
agent
| Benchmark | Score | Source |
|---|---|---|
| BrowseComp | 44.9 | verified |
Performance History
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Frequently Asked Questions about Grok 4 Fast
What is Grok 4 Fast's Neura Intelligence Index score?▾
Grok 4 Fast by xAI scores 68.5 out of 100 on the Neura Intelligence Index, ranking #74 among tracked AI models. This composite score is computed from 5 individual benchmarks across coding, math, reasoning, and language categories.
Is Grok 4 Fast open source?▾
No, Grok 4 Fast is a proprietary model by xAI. It is only accessible via their API.
What benchmark does Grok 4 Fast perform best on?▾
Grok 4 Fast achieves its highest score on SimpleQA with a score of 95.0%. This benchmark evaluates short factual questions testing factuality and calibration of language models.