Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Claude 4.1 Opus is clearly ahead on the aggregate, 64 to 58. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude 4.1 Opus's sharpest advantage is in multimodal & grounded, where it averages 80.7 against 66. The single biggest benchmark swing on the page is MMMU-Pro, 82 to 61. Aion-2.0 does hit back in instruction following, so the answer changes if that is the part of the workload you care about most.
Claude 4.1 Opus gives you the larger context window at 200K, compared with 128K for Aion-2.0.
Pick Claude 4.1 Opus if you want the stronger benchmark profile. Aion-2.0 only becomes the better choice if instruction following is the priority.
Claude 4.1 Opus
58.7
Aion-2.0
51.7
Claude 4.1 Opus
44
Aion-2.0
33.2
Claude 4.1 Opus
80.7
Aion-2.0
66
Claude 4.1 Opus
72.9
Aion-2.0
70.3
Claude 4.1 Opus
57.6
Aion-2.0
54
Claude 4.1 Opus
83
Aion-2.0
93
Claude 4.1 Opus
81.8
Aion-2.0
78.1
Claude 4.1 Opus
77.7
Aion-2.0
72.1
Claude 4.1 Opus is ahead overall, 64 to 58. The biggest single separator in this matchup is MMMU-Pro, where the scores are 82 and 61.
Claude 4.1 Opus has the edge for knowledge tasks in this comparison, averaging 57.6 versus 54. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.
Claude 4.1 Opus has the edge for coding in this comparison, averaging 44 versus 33.2. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
Claude 4.1 Opus has the edge for math in this comparison, averaging 77.7 versus 72.1. Inside this category, MATH-500 is the benchmark that creates the most daylight between them.
Claude 4.1 Opus has the edge for reasoning in this comparison, averaging 72.9 versus 70.3. Inside this category, LongBench v2 is the benchmark that creates the most daylight between them.
Claude 4.1 Opus has the edge for agentic tasks in this comparison, averaging 58.7 versus 51.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Claude 4.1 Opus has the edge for multimodal and grounded tasks in this comparison, averaging 80.7 versus 66. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
Aion-2.0 has the edge for instruction following in this comparison, averaging 93 versus 83. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Claude 4.1 Opus has the edge for multilingual tasks in this comparison, averaging 81.8 versus 78.1. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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