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Grok 4.1 fast benchmark results
6 results on 6 benchmarks from 4 sources.
Closed Released: Nov 19, 2025 Updated Oct 22, 2026
Also listed as: grok-4-1-fast-reasoning · Grok-4-1-fast-reasoning (FC) · Grok-4-1-fast-non-reasoning (FC) · Grok-4.1-Fast(Reasoning)
All benchmark results
| Benchmarks | Score | Rank | Setting | Source type | Date |
|---|---|---|---|---|---|
| LMArena Text | 1430 | 112 | Overall, style control on; 57574 votes; 95% CI 1427–1434“grok-4-1-fast-reasoning” | Official leaderboard | Oct 8, 2026 |
| LMArena WebDev | 1242 | 131 | Overall; 5491 votes; 95% CI 1231–1253“grok-4-1-fast-reasoning” | Official leaderboard | Oct 8, 2026 |
| LMArena Vision | 1196 | 88 | Overall, style control on; 13385 votes; 95% CI 1189–1203“grok-4-1-fast-reasoning” | Official leaderboard | Oct 2, 2026 |
| MMLU-Pro | 84.2% | 39 | Overall accuracy; data source: Self-Reported“Grok-4.1-Fast(Reasoning)” | Vendor-reported | Mar 11, 2026 |
| τ²-bench | 13.1% | 25 | banking_knowledge domain, pass^1; effort: high; submitted by Sierra; v1.0.1 | Official leaderboard | May 5, 2026 |
| BFCL v4 (function calling) | 69.6% | 5 | Overall accuracy; native function calling (FC)“Grok-4-1-fast-reasoning (FC)” | Official leaderboard | Oct 17, 2026 |
FAQ
Where do these Grok 4.1 fast scores come from?
From Berkeley Function Calling Leaderboard (BFCL), LMArena leaderboard dataset, MMLU-Pro leaderboard (TIGER-Lab), and τ²-bench leaderboard submissions. Each row links to the original leaderboard, dataset or report, and vendor-reported numbers are labelled.