Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
o1-preview is clearly ahead on the aggregate, 77 to 56. 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 27.6. The single biggest benchmark swing on the page is SWE-bench Verified, 65 to 24.
Seed 1.6 Flash 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 Flash only becomes the better choice if you need the larger 256K context window.
o1-preview
75.4
Seed 1.6 Flash
54.5
o1-preview
64.6
Seed 1.6 Flash
27.6
o1-preview
75.6
Seed 1.6 Flash
73.1
o1-preview
86.8
Seed 1.6 Flash
66.8
o1-preview
71.3
Seed 1.6 Flash
47.3
o1-preview
88
Seed 1.6 Flash
81
o1-preview
87.4
Seed 1.6 Flash
72.8
o1-preview
93.5
Seed 1.6 Flash
67.1
o1-preview is ahead overall, 77 to 56. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 65 and 24.
o1-preview has the edge for knowledge tasks in this comparison, averaging 71.3 versus 47.3. 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 27.6. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
o1-preview has the edge for math in this comparison, averaging 93.5 versus 67.1. 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 66.8. 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 54.5. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
o1-preview has the edge for multimodal and grounded tasks in this comparison, averaging 75.6 versus 73.1. Inside this category, OfficeQA 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 81. 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 72.8. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.
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