Grok 4.1 Fast vs GPT-4.1 mini

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

Grok 4.1 Fast is clearly ahead on the aggregate, 83 to 35. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Grok 4.1 Fast's sharpest advantage is in mathematics, where it averages 94.3 against 23.1. The single biggest benchmark swing on the page is AIME 2024, 98 to 23.1.

Quick Verdict

Pick Grok 4.1 Fast if you want the stronger benchmark profile. GPT-4.1 mini only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Knowledge

Grok 4.1 Fast

Grok 4.1 Fast

77.5

GPT-4.1 mini

75.9

94
MMLU
87.5
92
GPQA
64.2
90
SuperGPQA
-
88
OpenBookQA
-
81
MMLU-Pro
-
20
HLE
-

Coding

Grok 4.1 Fast

Grok 4.1 Fast

69.3

GPT-4.1 mini

23.6

86
HumanEval
-
68
SWE-bench Verified
23.6
54
LiveCodeBench
-

Mathematics

Grok 4.1 Fast

Grok 4.1 Fast

94.3

GPT-4.1 mini

23.1

96
AIME 2023
-
98
AIME 2024
23.1
97
AIME 2025
-
92
HMMT Feb 2023
-
94
HMMT Feb 2024
-
93
HMMT Feb 2025
-
95
BRUMO 2025
-
89
MATH-500
-

Reasoning

Grok 4.1 Fast
90
SimpleQA
-
88
MuSR
-
87
BBH
-

Instruction Following

Grok 4.1 Fast

Grok 4.1 Fast

90

GPT-4.1 mini

88.5

90
IFEval
88.5

Multilingual

Grok 4.1 Fast
88
MGSM
-

Frequently Asked Questions

Which is better, Grok 4.1 Fast or GPT-4.1 mini?

Grok 4.1 Fast is ahead overall, 83 to 35. The biggest single separator in this matchup is AIME 2024, where the scores are 98 and 23.1.

Which is better for knowledge tasks, Grok 4.1 Fast or GPT-4.1 mini?

Grok 4.1 Fast has the edge for knowledge tasks in this comparison, averaging 77.5 versus 75.9. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, Grok 4.1 Fast or GPT-4.1 mini?

Grok 4.1 Fast has the edge for coding in this comparison, averaging 69.3 versus 23.6. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for math, Grok 4.1 Fast or GPT-4.1 mini?

Grok 4.1 Fast has the edge for math in this comparison, averaging 94.3 versus 23.1. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.

Which is better for instruction following, Grok 4.1 Fast or GPT-4.1 mini?

Grok 4.1 Fast has the edge for instruction following in this comparison, averaging 90 versus 88.5. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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