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 44. 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 66. The single biggest benchmark swing on the page is OpenBookQA, 75 to 33.
Claude 4.1 Opus Thinking is the reasoning model in the pair, while Aion-2.0 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Claude 4.1 Opus Thinking 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 4.1 Opus Thinking only becomes the better choice if you need the larger 200K context window or you want the stronger reasoning-first profile.
Aion-2.0
51.7
Claude 4.1 Opus Thinking
46.7
Aion-2.0
33.2
Claude 4.1 Opus Thinking
21.8
Aion-2.0
66
Claude 4.1 Opus Thinking
59.3
Aion-2.0
70.3
Claude 4.1 Opus Thinking
49.4
Aion-2.0
54
Claude 4.1 Opus Thinking
34.3
Aion-2.0
93
Claude 4.1 Opus Thinking
66
Aion-2.0
78.1
Claude 4.1 Opus Thinking
58.7
Aion-2.0
72.1
Claude 4.1 Opus Thinking
48.3
Aion-2.0 is ahead overall, 58 to 44. The biggest single separator in this matchup is OpenBookQA, where the scores are 75 and 33.
Aion-2.0 has the edge for knowledge tasks in this comparison, averaging 54 versus 34.3. 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 21.8. Inside this category, HumanEval 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 48.3. 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 49.4. 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 46.7. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.
Aion-2.0 has the edge for multimodal and grounded tasks in this comparison, averaging 66 versus 59.3. Inside this category, OfficeQA 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 66. 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 58.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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