Grok 4.20: benchmark results
xAI Grok 4.20 flagship with a built-in four-agent collaborative council and a 2M-token context. Provider: xAI. Released 2026-03-10. Access: API.
Unified ELO 1653 ± 1, rank #123 of 1392 rated models, from 335 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| Alpha Arena (Nof1) | 34.59 | Return (%) | 100 |
| EpiBench | 33.6 | Accuracy (%) | 100 |
| FutureSearch BTF-2 Calibration | 0 | Calibration Error | 100 |
| REFUTE | 74.5 | Truth Score (accuracy + calibration, higher is better) | 100 |
| Evals for Every Language - Language ku | 67.12 | Average Score (%) | 98.6 |
| Evals for Every Language - Language mr | 73.46 | Average Score (%) | 98.6 |
| Evals for Every Language - Language zu | 70.06 | Average Score (%) | 98.6 |
| Evals for Every Language - Language ja | 70.46 | Average Score (%) | 97.1 |
| Evals for Every Language - Language sq | 73.1 | Average Score (%) | 97.1 |
| Agent-ValueBench | 7.8 | Authority (self-reported) | 96.2 |
| Evals for Every Language - Language pam | 96.67 | Average Score (%) | 94.7 |
| ForecastBench | 67.9 | Overall Score (higher is better) | 94.7 |
Interactive version: theaggregate.ai/model?slug=grok-4-20 · How It Works · Data refreshed daily, snapshot 2026-09-05.