Automated page. Written and translated automatically by AI and checked against the sources by software; no human editor. SI-IQ is an index built from public benchmark results, not an IQ test. How it works
How smart is Grok 4?
Grok 4 is a model from xAI, released on Jul 9, 2025. Its SI-IQ is 114 (90% interval 107–120), estimated from 4 benchmark results by 3 independent evaluators.
This model has fewer than 5 independent benchmark results or fewer than 2 different evaluators, so it is shown but not ranked.
Facts
- Developer
- xAI
- Released
- Jul 9, 2025
- Access
- API access
- Benchmarks used
- 4 results from 3 evaluators
Ability by area (SI-IQ, 90% interval)
Every benchmark result we used
Each score is one value exactly as the source published it: for Epoch AI the best of its run settings, for OpenRouter the median hosting provider (the developer's own hosting when it ran the test). “Implied SI-IQ” is the ability that this single result points to; the overall SI-IQ is their precision-weighted average.
| Benchmark | Score | Evaluated by | Source |
|---|---|---|---|
| OTIS Mock AIME 2024–2025 | 84.0% | Epoch AI | Epoch AI Benchmarking Hub · data file |
| Aider Polyglot | 79.6% | Aider | Aider LLM Leaderboards · data file |
| GPQA Diamond | 87.0% | Epoch AI | Epoch AI Benchmarking Hub · data file |
| Berkeley Function Calling Leaderboard | 63.0% | UC Berkeley (Gorilla) | Berkeley Function Calling Leaderboard · data file |
Human preference (Arena)
On the Arena leaderboard, where people vote between two anonymous answers, Grok 4 has a rating of 1,411 (1,407–1,415) from 39,693 votes (published Oct 15, 2026). Human preference is a different measure from benchmark ability and is not part of SI-IQ. Arena (Hugging Face)
Computed with SI-IQ method version 1.0.0. Read the full methodology
Data sources: Aider polyglot leaderboard data (Apache-2.0); Arena leaderboard dataset on Hugging Face (CC BY 4.0); Berkeley Function Calling Leaderboard, Gorilla project (Apache-2.0); Epoch AI, ‘Capabilities & benchmarking’ (CC BY 4.0).