Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Claude 3.5 Sonnet has the cleaner overall profile here, landing at 60 versus 58. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
Claude 3.5 Sonnet's sharpest advantage is in multimodal & grounded, where it averages 74.8 against 66. The single biggest benchmark swing on the page is MMMU-Pro, 77 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 3.5 Sonnet gives you the larger context window at 200K, compared with 128K for Aion-2.0.
Pick Claude 3.5 Sonnet if you want the stronger benchmark profile. Aion-2.0 only becomes the better choice if instruction following is the priority.
Claude 3.5 Sonnet
55
Aion-2.0
51.7
Claude 3.5 Sonnet
37.8
Aion-2.0
33.2
Claude 3.5 Sonnet
74.8
Aion-2.0
66
Claude 3.5 Sonnet
67.7
Aion-2.0
70.3
Claude 3.5 Sonnet
50.8
Aion-2.0
54
Claude 3.5 Sonnet
83
Aion-2.0
93
Claude 3.5 Sonnet
80.5
Aion-2.0
78.1
Claude 3.5 Sonnet
71.2
Aion-2.0
72.1
Claude 3.5 Sonnet is ahead overall, 60 to 58. The biggest single separator in this matchup is MMMU-Pro, where the scores are 77 and 61.
Aion-2.0 has the edge for knowledge tasks in this comparison, averaging 54 versus 50.8. Inside this category, OpenBookQA is the benchmark that creates the most daylight between them.
Claude 3.5 Sonnet has the edge for coding in this comparison, averaging 37.8 versus 33.2. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.
Aion-2.0 has the edge for math in this comparison, averaging 72.1 versus 71.2. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
Aion-2.0 has the edge for reasoning in this comparison, averaging 70.3 versus 67.7. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
Claude 3.5 Sonnet has the edge for agentic tasks in this comparison, averaging 55 versus 51.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Claude 3.5 Sonnet has the edge for multimodal and grounded tasks in this comparison, averaging 74.8 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 3.5 Sonnet has the edge for multilingual tasks in this comparison, averaging 80.5 versus 78.1. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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