Grok 4.1 Fast vs Seed-2.0-Lite

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 63. 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 coding, where it averages 59.5 against 41.4. The single biggest benchmark swing on the page is AIME 2023, 96 to 71.

Grok 4.1 Fast gives you the larger context window at 1M, compared with 256K for Seed-2.0-Lite.

Quick Verdict

Pick Grok 4.1 Fast if you want the stronger benchmark profile. Seed-2.0-Lite 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

Seed-2.0-Lite

55.1

74
Terminal-Bench 2.0
52
73
BrowseComp
63
66
OSWorld-Verified
53

Coding

Grok 4.1 Fast

Grok 4.1 Fast

59.5

Seed-2.0-Lite

41.4

86
HumanEval
63
68
SWE-bench Verified
45
54
LiveCodeBench
37
63
SWE-bench Pro
45

Multimodal & Grounded

Grok 4.1 Fast

Grok 4.1 Fast

87.4

Seed-2.0-Lite

79.6

91
MMMU-Pro
80
83
OfficeQA Pro
79

Reasoning

Grok 4.1 Fast

Grok 4.1 Fast

88.3

Seed-2.0-Lite

73

90
SimpleQA
68
88
MuSR
66
87
BBH
85
87
LongBench v2
76
89
MRCRv2
77

Knowledge

Grok 4.1 Fast

Grok 4.1 Fast

69.2

Seed-2.0-Lite

53.9

94
MMLU
71
92
GPQA
70
90
SuperGPQA
68
88
OpenBookQA
66
81
MMLU-Pro
73
20
HLE
7
83
FrontierScience
66

Instruction Following

Grok 4.1 Fast

Grok 4.1 Fast

90

Seed-2.0-Lite

89

90
IFEval
89

Multilingual

Grok 4.1 Fast

Grok 4.1 Fast

84.8

Seed-2.0-Lite

82.5

88
MGSM
87
83
MMLU-ProX
80

Mathematics

Grok 4.1 Fast

Grok 4.1 Fast

92.3

Seed-2.0-Lite

75

96
AIME 2023
71
98
AIME 2024
73
97
AIME 2025
72
92
HMMT Feb 2023
67
94
HMMT Feb 2024
69
93
HMMT Feb 2025
68
95
BRUMO 2025
70
89
MATH-500
81

Frequently Asked Questions

Which is better, Grok 4.1 Fast or Seed-2.0-Lite?

Grok 4.1 Fast is ahead overall, 76 to 63. The biggest single separator in this matchup is AIME 2023, where the scores are 96 and 71.

Which is better for knowledge tasks, Grok 4.1 Fast or Seed-2.0-Lite?

Grok 4.1 Fast has the edge for knowledge tasks in this comparison, averaging 69.2 versus 53.9. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Grok 4.1 Fast or Seed-2.0-Lite?

Grok 4.1 Fast has the edge for coding in this comparison, averaging 59.5 versus 41.4. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Grok 4.1 Fast or Seed-2.0-Lite?

Grok 4.1 Fast has the edge for math in this comparison, averaging 92.3 versus 75. 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 Seed-2.0-Lite?

Grok 4.1 Fast has the edge for reasoning in this comparison, averaging 88.3 versus 73. 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 Seed-2.0-Lite?

Grok 4.1 Fast has the edge for agentic tasks in this comparison, averaging 71 versus 55.1. 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 Seed-2.0-Lite?

Grok 4.1 Fast has the edge for multimodal and grounded tasks in this comparison, averaging 87.4 versus 79.6. 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 Seed-2.0-Lite?

Grok 4.1 Fast has the edge for instruction following in this comparison, averaging 90 versus 89. 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 Seed-2.0-Lite?

Grok 4.1 Fast has the edge for multilingual tasks in this comparison, averaging 84.8 versus 82.5. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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