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 34. 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 reasoning, where it averages 70.3 against 40.9. The single biggest benchmark swing on the page is OpenBookQA, 75 to 27.
Pick Aion-2.0 if you want the stronger benchmark profile. Kimi K2 only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Aion-2.0
51.7
Kimi K2
29.3
Aion-2.0
33.2
Kimi K2
12.8
Aion-2.0
66
Kimi K2
39.5
Aion-2.0
70.3
Kimi K2
40.9
Aion-2.0
54
Kimi K2
29.3
Aion-2.0
93
Kimi K2
67
Aion-2.0
78.1
Kimi K2
59.7
Aion-2.0
72.1
Kimi K2
42.7
Aion-2.0 is ahead overall, 58 to 34. The biggest single separator in this matchup is OpenBookQA, where the scores are 75 and 27.
Aion-2.0 has the edge for knowledge tasks in this comparison, averaging 54 versus 29.3. 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 12.8. 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 42.7. 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 40.9. 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 29.3. 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 39.5. 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 67. 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 59.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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