Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
o1-preview is clearly ahead on the aggregate, 77 to 65. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
o1-preview's sharpest advantage is in coding, where it averages 64.6 against 42.4. The single biggest benchmark swing on the page is SWE-bench Pro, 69 to 46. Seed 1.6 does hit back in multimodal & grounded, so the answer changes if that is the part of the workload you care about most.
Seed 1.6 gives you the larger context window at 256K, compared with 200K for o1-preview.
Pick o1-preview if you want the stronger benchmark profile. Seed 1.6 only becomes the better choice if multimodal & grounded is the priority or you need the larger 256K context window.
o1-preview
75.4
Seed 1.6
62.3
o1-preview
64.6
Seed 1.6
42.4
o1-preview
75.6
Seed 1.6
79.6
o1-preview
86.8
Seed 1.6
74.5
o1-preview
71.3
Seed 1.6
56.4
o1-preview
88
Seed 1.6
87
o1-preview
87.4
Seed 1.6
83.4
o1-preview
93.5
Seed 1.6
75.9
o1-preview is ahead overall, 77 to 65. The biggest single separator in this matchup is SWE-bench Pro, where the scores are 69 and 46.
o1-preview has the edge for knowledge tasks in this comparison, averaging 71.3 versus 56.4. Inside this category, HLE is the benchmark that creates the most daylight between them.
o1-preview has the edge for coding in this comparison, averaging 64.6 versus 42.4. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
o1-preview has the edge for math in this comparison, averaging 93.5 versus 75.9. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
o1-preview has the edge for reasoning in this comparison, averaging 86.8 versus 74.5. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
o1-preview has the edge for agentic tasks in this comparison, averaging 75.4 versus 62.3. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Seed 1.6 has the edge for multimodal and grounded tasks in this comparison, averaging 79.6 versus 75.6. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
o1-preview has the edge for instruction following in this comparison, averaging 88 versus 87. Inside this category, IFEval is the benchmark that creates the most daylight between them.
o1-preview has the edge for multilingual tasks in this comparison, averaging 87.4 versus 83.4. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.
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