Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Seed 1.6 Flash is clearly ahead on the aggregate, 56 to 51. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Seed 1.6 Flash's sharpest advantage is in coding, where it averages 27.6 against 19. The single biggest benchmark swing on the page is SWE-bench Verified, 24 to 10.
Seed 1.6 Flash is the reasoning model in the pair, while Claude 3 Opus 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. Seed 1.6 Flash gives you the larger context window at 256K, compared with 200K for Claude 3 Opus.
Pick Seed 1.6 Flash if you want the stronger benchmark profile. Claude 3 Opus only becomes the better choice if you would rather avoid the extra latency and token burn of a reasoning model.
Seed 1.6 Flash
54.5
Claude 3 Opus
48.1
Seed 1.6 Flash
27.6
Claude 3 Opus
19
Seed 1.6 Flash
73.1
Claude 3 Opus
70.3
Seed 1.6 Flash
66.8
Claude 3 Opus
61.6
Seed 1.6 Flash
47.3
Claude 3 Opus
45
Seed 1.6 Flash
81
Claude 3 Opus
77
Seed 1.6 Flash
72.8
Claude 3 Opus
69.8
Seed 1.6 Flash
67.1
Claude 3 Opus
65.9
Seed 1.6 Flash is ahead overall, 56 to 51. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 24 and 10.
Seed 1.6 Flash has the edge for knowledge tasks in this comparison, averaging 47.3 versus 45. Inside this category, MMLU is the benchmark that creates the most daylight between them.
Seed 1.6 Flash has the edge for coding in this comparison, averaging 27.6 versus 19. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
Seed 1.6 Flash has the edge for math in this comparison, averaging 67.1 versus 65.9. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
Seed 1.6 Flash has the edge for reasoning in this comparison, averaging 66.8 versus 61.6. Inside this category, MRCRv2 is the benchmark that creates the most daylight between them.
Seed 1.6 Flash has the edge for agentic tasks in this comparison, averaging 54.5 versus 48.1. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Seed 1.6 Flash has the edge for multimodal and grounded tasks in this comparison, averaging 73.1 versus 70.3. Inside this category, OfficeQA Pro is the benchmark that creates the most daylight between them.
Seed 1.6 Flash has the edge for instruction following in this comparison, averaging 81 versus 77. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Seed 1.6 Flash has the edge for multilingual tasks in this comparison, averaging 72.8 versus 69.8. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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