benchlm.ai

Grok 3 [Beta] vs Grok 4.1 Fast

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Quick Verdict

Grok 4.1 Fast wins overall with a score of 73 vs 33 (40 point difference).Grok 4.1 Fast wins 4 out of 4 categories.

Grok 3 [Beta]

CreatorxAI
TypeProprietary
Context128K
Score33

Grok 4.1 Fast

CreatorxAI
TypeProprietary
Context2M
Score73

Knowledge

Grok 4.1 Fast

Grok 3 [Beta]

39.8

Grok 4.1 Fast

91

42
MMLU
94
41
GPQA
92
39
SuperGPQA
90
37
OpenBookQA
88

Coding

Grok 4.1 Fast

Grok 3 [Beta]

34

Grok 4.1 Fast

86

34
HumanEval
86

Mathematics

Grok 4.1 Fast

Grok 3 [Beta]

41

Grok 4.1 Fast

95

42
AIME 2023
96
44
AIME 2024
98
43
AIME 2025
97
38
HMMT Feb 2023
92
40
HMMT Feb 2024
94
39
HMMT Feb 2025
93
41
BRUMO 2025
95

Reasoning

Grok 4.1 Fast

Grok 3 [Beta]

39

Grok 4.1 Fast

89

40
SimpleQA
90
38
MuSR
88

Frequently Asked Questions

Which is better, Grok 3 [Beta] or Grok 4.1 Fast?

Grok 4.1 Fast scores higher overall with 73 vs 33, a difference of 40 points across all benchmarks.

Which is better for knowledge tasks, Grok 3 [Beta] or Grok 4.1 Fast?

Grok 4.1 Fast leads in knowledge tasks with an average score of 91 vs 39.8.

Which is better for coding, Grok 3 [Beta] or Grok 4.1 Fast?

Grok 4.1 Fast leads in coding with an average score of 86 vs 34.

Which is better for math, Grok 3 [Beta] or Grok 4.1 Fast?

Grok 4.1 Fast leads in math with an average score of 95 vs 41.

Which is better for reasoning, Grok 3 [Beta] or Grok 4.1 Fast?

Grok 4.1 Fast leads in reasoning with an average score of 89 vs 39.

Related Comparisons

Grok 3 [Beta] vs GPT-5.4Grok 3 [Beta] vs Gemini 3.1 ProGrok 3 [Beta] vs Claude Opus 4.6Grok 3 [Beta] vs GPT-5.3 CodexGrok 3 [Beta] vs Grok 4.1Grok 3 [Beta] vs GPT-5.2