Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Gemini 3 Flash is clearly ahead on the aggregate, 62 to 56. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 3 Flash's sharpest advantage is in coding, where it averages 40.4 against 27.6. The single biggest benchmark swing on the page is SWE-bench Verified, 44 to 24.
Gemini 3 Flash is also the more expensive model on tokens at $0.50 input / $3.00 output per 1M tokens, versus $0.08 input / $0.30 output per 1M tokens for Seed 1.6 Flash. That is roughly 10.0x on output cost alone. Seed 1.6 Flash is the reasoning model in the pair, while Gemini 3 Flash 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. Gemini 3 Flash gives you the larger context window at 1M, compared with 256K for Seed 1.6 Flash.
Pick Gemini 3 Flash if you want the stronger benchmark profile. Seed 1.6 Flash only becomes the better choice if you want the cheaper token bill or you want the stronger reasoning-first profile.
Gemini 3 Flash
57.5
Seed 1.6 Flash
54.5
Gemini 3 Flash
40.4
Seed 1.6 Flash
27.6
Gemini 3 Flash
79.6
Seed 1.6 Flash
73.1
Gemini 3 Flash
72
Seed 1.6 Flash
66.8
Gemini 3 Flash
52.9
Seed 1.6 Flash
47.3
Gemini 3 Flash
85
Seed 1.6 Flash
81
Gemini 3 Flash
80.5
Seed 1.6 Flash
72.8
Gemini 3 Flash
74
Seed 1.6 Flash
67.1
Gemini 3 Flash is ahead overall, 62 to 56. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 44 and 24.
Gemini 3 Flash has the edge for knowledge tasks in this comparison, averaging 52.9 versus 47.3. Inside this category, FrontierScience is the benchmark that creates the most daylight between them.
Gemini 3 Flash has the edge for coding in this comparison, averaging 40.4 versus 27.6. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
Gemini 3 Flash has the edge for math in this comparison, averaging 74 versus 67.1. Inside this category, MATH-500 is the benchmark that creates the most daylight between them.
Gemini 3 Flash has the edge for reasoning in this comparison, averaging 72 versus 66.8. Inside this category, BBH is the benchmark that creates the most daylight between them.
Gemini 3 Flash has the edge for agentic tasks in this comparison, averaging 57.5 versus 54.5. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Gemini 3 Flash has the edge for multimodal and grounded tasks in this comparison, averaging 79.6 versus 73.1. Inside this category, OfficeQA Pro is the benchmark that creates the most daylight between them.
Gemini 3 Flash has the edge for instruction following in this comparison, averaging 85 versus 81. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Gemini 3 Flash has the edge for multilingual tasks in this comparison, averaging 80.5 versus 72.8. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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