Claude Opus 4.5 vs Nemotron 3 Super 120B A12B

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

Claude Opus 4.5 is clearly ahead on the aggregate, 77 to 61. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude Opus 4.5's sharpest advantage is in multimodal & grounded, where it averages 90.9 against 60.4. The single biggest benchmark swing on the page is MMMU-Pro, 94 to 55.

Nemotron 3 Super 120B A12B gives you the larger context window at 256K, compared with 200K for Claude Opus 4.5.

Quick Verdict

Pick Claude Opus 4.5 if you want the stronger benchmark profile. Nemotron 3 Super 120B A12B only becomes the better choice if you need the larger 256K context window.

Agentic

Claude Opus 4.5

Claude Opus 4.5

70.5

Nemotron 3 Super 120B A12B

55.3

71
Terminal-Bench 2.0
55
73
BrowseComp
59
68
OSWorld-Verified
53

Coding

Claude Opus 4.5

Claude Opus 4.5

60.4

Nemotron 3 Super 120B A12B

44.2

91
HumanEval
59
68
SWE-bench Verified
46
57
LiveCodeBench
42
62
SWE-bench Pro
46

Multimodal & Grounded

Claude Opus 4.5

Claude Opus 4.5

90.9

Nemotron 3 Super 120B A12B

60.4

94
MMMU-Pro
55
87
OfficeQA Pro
67

Reasoning

Claude Opus 4.5

Claude Opus 4.5

87.7

Nemotron 3 Super 120B A12B

71.8

95
SimpleQA
64
93
MuSR
62
87
BBH
88
82
LongBench v2
77
81
MRCRv2
77

Knowledge

Claude Opus 4.5

Claude Opus 4.5

70.9

Nemotron 3 Super 120B A12B

55.8

99
MMLU
68
97
GPQA
67
95
SuperGPQA
65
93
OpenBookQA
63
81
MMLU-Pro
75
20
HLE
16
84
FrontierScience
66

Instruction Following

Claude Opus 4.5

Claude Opus 4.5

90

Nemotron 3 Super 120B A12B

86

90
IFEval
86

Multilingual

Claude Opus 4.5

Claude Opus 4.5

86.1

Nemotron 3 Super 120B A12B

81.5

90
MGSM
86
84
MMLU-ProX
79

Mathematics

Claude Opus 4.5

Claude Opus 4.5

93.2

Nemotron 3 Super 120B A12B

74.6

99
AIME 2023
67
99
AIME 2024
69
98
AIME 2025
68
95
HMMT Feb 2023
63
97
HMMT Feb 2024
65
96
HMMT Feb 2025
64
96
BRUMO 2025
66
89
MATH-500
85

Frequently Asked Questions

Which is better, Claude Opus 4.5 or Nemotron 3 Super 120B A12B?

Claude Opus 4.5 is ahead overall, 77 to 61. The biggest single separator in this matchup is MMMU-Pro, where the scores are 94 and 55.

Which is better for knowledge tasks, Claude Opus 4.5 or Nemotron 3 Super 120B A12B?

Claude Opus 4.5 has the edge for knowledge tasks in this comparison, averaging 70.9 versus 55.8. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Claude Opus 4.5 or Nemotron 3 Super 120B A12B?

Claude Opus 4.5 has the edge for coding in this comparison, averaging 60.4 versus 44.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Claude Opus 4.5 or Nemotron 3 Super 120B A12B?

Claude Opus 4.5 has the edge for math in this comparison, averaging 93.2 versus 74.6. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Claude Opus 4.5 or Nemotron 3 Super 120B A12B?

Claude Opus 4.5 has the edge for reasoning in this comparison, averaging 87.7 versus 71.8. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Claude Opus 4.5 or Nemotron 3 Super 120B A12B?

Claude Opus 4.5 has the edge for agentic tasks in this comparison, averaging 70.5 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, Claude Opus 4.5 or Nemotron 3 Super 120B A12B?

Claude Opus 4.5 has the edge for multimodal and grounded tasks in this comparison, averaging 90.9 versus 60.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Claude Opus 4.5 or Nemotron 3 Super 120B A12B?

Claude Opus 4.5 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, Claude Opus 4.5 or Nemotron 3 Super 120B A12B?

Claude Opus 4.5 has the edge for multilingual tasks in this comparison, averaging 86.1 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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