Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Aion-2.0 is clearly ahead on the aggregate, 58 to 51. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Aion-2.0's sharpest advantage is in instruction following, where it averages 93 against 77. The single biggest benchmark swing on the page is SWE-bench Verified, 35 to 10. Claude 3 Opus does hit back in multimodal & grounded, so the answer changes if that is the part of the workload you care about most.
Claude 3 Opus gives you the larger context window at 200K, compared with 128K for Aion-2.0.
Pick Aion-2.0 if you want the stronger benchmark profile. Claude 3 Opus only becomes the better choice if multimodal & grounded is the priority or you need the larger 200K context window.
Aion-2.0
51.7
Claude 3 Opus
48.1
Aion-2.0
33.2
Claude 3 Opus
19
Aion-2.0
66
Claude 3 Opus
70.3
Aion-2.0
70.3
Claude 3 Opus
61.6
Aion-2.0
54
Claude 3 Opus
45
Aion-2.0
93
Claude 3 Opus
77
Aion-2.0
78.1
Claude 3 Opus
69.8
Aion-2.0
72.1
Claude 3 Opus
65.9
Aion-2.0 is ahead overall, 58 to 51. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 35 and 10.
Aion-2.0 has the edge for knowledge tasks in this comparison, averaging 54 versus 45. Inside this category, OpenBookQA is the benchmark that creates the most daylight between them.
Aion-2.0 has the edge for coding in this comparison, averaging 33.2 versus 19. Inside this category, SWE-bench Verified 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 65.9. 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 61.6. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
Aion-2.0 has the edge for agentic tasks in this comparison, averaging 51.7 versus 48.1. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Claude 3 Opus has the edge for multimodal and grounded tasks in this comparison, averaging 70.3 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 77. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Aion-2.0 has the edge for multilingual tasks in this comparison, averaging 78.1 versus 69.8. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.
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