Skip to content
aiqbench

xAI · model passport

Grok 4 1 Fast

grok-4-1-fast
  • Cloud only
  • Proprietary licence
  • Released 2026-10-16(first seen on LMArena)
4/27axes covered
Best percentile
93.3MMLU-Pro (Artificial Analysis)
Cohort standing
58.2median 60.8

What the data says

Benchmarked on 4 of 27 tracked axes. Every figure below is the model's own published result on that board.

Strongest axes

  • 93.3 pct — MMLU-Pro (Artificial Analysis) (85.4%)
  • 92.7 pct — LiveCodeBench (Artificial Analysis) (82.2%)

Weakest axes

  • 10.8 pct — WebDev Arena (1,242)

Uneven: 82.5 percentile points between its best and worst axis — 93.3 pct on MMLU-Pro (Artificial Analysis) versus 10.8 pct on WebDev Arena.

  • MMLU-Pro (Artificial Analysis)93.3 pct85.4%Verify →
  • LiveCodeBench (Artificial Analysis)92.7 pct82.2%Verify →
  • IFBench (Artificial Analysis)60.5 pct52.7%Verify →
  • WebDev Arena10.8 pct1,242Verify →
  • OverallNot benchmarked
  • Vision ArenaNot benchmarked
  • Factuality ArenaNot benchmarked
  • Search ArenaNot benchmarked
  • Document ArenaNot benchmarked
  • Agent ArenaNot benchmarked
  • GPQA DiamondNot benchmarked
  • AIME (math)Not benchmarked
  • FrontierMathNot benchmarked
  • SimpleQA VerifiedNot benchmarked
  • ARC-AGI-2Not benchmarked
  • Humanity's Last ExamNot benchmarked
  • SimpleBenchNot benchmarked
  • LiveBenchNot benchmarked
  • BFCL v4 (function calling)Not benchmarked
  • SWE-bench Verified (live board)Not benchmarked
  • Terminal-Bench 4.0Not benchmarked
  • HHEM Hallucination (Vectara)Not benchmarked
  • SWE-bench VerifiedNot benchmarked
  • Terminal-BenchNot benchmarked
  • CodingNot benchmarked
  • Instruction followingNot benchmarked
  • Hard promptsNot benchmarked

Percentiles are the model's standing within each board's own population. Axes marked "not benchmarked" have no published result for this model — that is an absence of data, not a low score.

  • Grok 4.1 Fast (Reasoning) stands at 58.2 (raw mean 64.3) — measured on 4 of 27 axes.

    standingtemplateVerify →

  • Grok 4.1 Fast (Reasoning) stands at 58.2 versus a cohort median of 60.8 across 168 models released within 180 days — below the peer median.

    cohorttemplateVerify →

Every claim is a computed fact from the current board data, phrased by a low-temperature model call and rejected by a validation gate if any number is not in the source row. How the leaderboards work →