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 54. 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 multimodal & grounded, where it averages 66 against 50.4. The single biggest benchmark swing on the page is MMMU-Pro, 61 to 40. Grok Code Fast 1 does hit back in agentic, so the answer changes if that is the part of the workload you care about most.
Grok Code Fast 1 gives you the larger context window at 256K, compared with 128K for Aion-2.0.
Pick Aion-2.0 if you want the stronger benchmark profile. Grok Code Fast 1 only becomes the better choice if agentic is the priority or you need the larger 256K context window.
Aion-2.0
51.7
Grok Code Fast 1
55.7
Aion-2.0
33.2
Grok Code Fast 1
32.8
Aion-2.0
66
Grok Code Fast 1
50.4
Aion-2.0
70.3
Grok Code Fast 1
63.7
Aion-2.0
54
Grok Code Fast 1
48
Aion-2.0
93
Grok Code Fast 1
79
Aion-2.0
78.1
Grok Code Fast 1
73.7
Aion-2.0
72.1
Grok Code Fast 1
67.5
Aion-2.0 is ahead overall, 58 to 54. The biggest single separator in this matchup is MMMU-Pro, where the scores are 61 and 40.
Aion-2.0 has the edge for knowledge tasks in this comparison, averaging 54 versus 48. 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 32.8. 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 67.5. 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 63.7. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
Grok Code Fast 1 has the edge for agentic tasks in this comparison, averaging 55.7 versus 51.7. Inside this category, Terminal-Bench 2.0 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 50.4. 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 79. 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 73.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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