Grok 4.1 Fast vs Nemotron 3 Super 120B A12B

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

Grok 4.1 Fast is clearly ahead on the aggregate, 76 to 61. 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 multimodal & grounded, where it averages 87.4 against 60.4. The single biggest benchmark swing on the page is MMMU-Pro, 91 to 55.

Grok 4.1 Fast gives you the larger context window at 1M, compared with 256K for Nemotron 3 Super 120B A12B.

Quick Verdict

Pick Grok 4.1 Fast if you want the stronger benchmark profile. Nemotron 3 Super 120B A12B only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Agentic

Grok 4.1 Fast

Grok 4.1 Fast

71

Nemotron 3 Super 120B A12B

55.3

74
Terminal-Bench 2.0
55
73
BrowseComp
59
66
OSWorld-Verified
53

Coding

Grok 4.1 Fast

Grok 4.1 Fast

59.5

Nemotron 3 Super 120B A12B

44.2

86
HumanEval
59
68
SWE-bench Verified
46
54
LiveCodeBench
42
63
SWE-bench Pro
46

Multimodal & Grounded

Grok 4.1 Fast

Grok 4.1 Fast

87.4

Nemotron 3 Super 120B A12B

60.4

91
MMMU-Pro
55
83
OfficeQA Pro
67

Reasoning

Grok 4.1 Fast

Grok 4.1 Fast

88.3

Nemotron 3 Super 120B A12B

71.8

90
SimpleQA
64
88
MuSR
62
87
BBH
88
87
LongBench v2
77
89
MRCRv2
77

Knowledge

Grok 4.1 Fast

Grok 4.1 Fast

69.2

Nemotron 3 Super 120B A12B

55.8

94
MMLU
68
92
GPQA
67
90
SuperGPQA
65
88
OpenBookQA
63
81
MMLU-Pro
75
20
HLE
16
83
FrontierScience
66

Instruction Following

Grok 4.1 Fast

Grok 4.1 Fast

90

Nemotron 3 Super 120B A12B

86

90
IFEval
86

Multilingual

Grok 4.1 Fast

Grok 4.1 Fast

84.8

Nemotron 3 Super 120B A12B

81.5

88
MGSM
86
83
MMLU-ProX
79

Mathematics

Grok 4.1 Fast

Grok 4.1 Fast

92.3

Nemotron 3 Super 120B A12B

74.6

96
AIME 2023
67
98
AIME 2024
69
97
AIME 2025
68
92
HMMT Feb 2023
63
94
HMMT Feb 2024
65
93
HMMT Feb 2025
64
95
BRUMO 2025
66
89
MATH-500
85

Frequently Asked Questions

Which is better, Grok 4.1 Fast or Nemotron 3 Super 120B A12B?

Grok 4.1 Fast is ahead overall, 76 to 61. The biggest single separator in this matchup is MMMU-Pro, where the scores are 91 and 55.

Which is better for knowledge tasks, Grok 4.1 Fast or Nemotron 3 Super 120B A12B?

Grok 4.1 Fast has the edge for knowledge tasks in this comparison, averaging 69.2 versus 55.8. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Grok 4.1 Fast or Nemotron 3 Super 120B A12B?

Grok 4.1 Fast has the edge for coding in this comparison, averaging 59.5 versus 44.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Grok 4.1 Fast or Nemotron 3 Super 120B A12B?

Grok 4.1 Fast has the edge for math in this comparison, averaging 92.3 versus 74.6. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Grok 4.1 Fast or Nemotron 3 Super 120B A12B?

Grok 4.1 Fast has the edge for reasoning in this comparison, averaging 88.3 versus 71.8. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Grok 4.1 Fast or Nemotron 3 Super 120B A12B?

Grok 4.1 Fast has the edge for agentic tasks in this comparison, averaging 71 versus 55.3. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Grok 4.1 Fast or Nemotron 3 Super 120B A12B?

Grok 4.1 Fast has the edge for multimodal and grounded tasks in this comparison, averaging 87.4 versus 60.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Grok 4.1 Fast or Nemotron 3 Super 120B A12B?

Grok 4.1 Fast has the edge for instruction following in this comparison, averaging 90 versus 86. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Grok 4.1 Fast or Nemotron 3 Super 120B A12B?

Grok 4.1 Fast has the edge for multilingual tasks in this comparison, averaging 84.8 versus 81.5. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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