Seed 1.6 Flash vs Llama 3 70B

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 45. 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 multimodal & grounded, where it averages 73.1 against 52.3. The single biggest benchmark swing on the page is MMMU-Pro, 74 to 50.

Seed 1.6 Flash is the reasoning model in the pair, while Llama 3 70B 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 128K for Llama 3 70B.

Quick Verdict

Pick Seed 1.6 Flash if you want the stronger benchmark profile. Llama 3 70B only becomes the better choice if you would rather avoid the extra latency and token burn of a reasoning model.

Agentic

Seed 1.6 Flash

Seed 1.6 Flash

54.5

Llama 3 70B

41.2

52
Terminal-Bench 2.0
37
62
BrowseComp
48
52
OSWorld-Verified
41

Coding

Seed 1.6 Flash

Seed 1.6 Flash

27.6

Llama 3 70B

15.8

59
HumanEval
50
24
SWE-bench Verified
9
25
LiveCodeBench
19
31
SWE-bench Pro
14

Multimodal & Grounded

Seed 1.6 Flash

Seed 1.6 Flash

73.1

Llama 3 70B

52.3

74
MMMU-Pro
50
72
OfficeQA Pro
55

Reasoning

Seed 1.6 Flash

Seed 1.6 Flash

66.8

Llama 3 70B

59.6

61
SimpleQA
56
59
MuSR
54
75
BBH
74
70
LongBench v2
61
74
MRCRv2
61

Knowledge

Seed 1.6 Flash

Seed 1.6 Flash

47.3

Llama 3 70B

42.2

65
MMLU
58
64
GPQA
58
62
SuperGPQA
56
60
OpenBookQA
54
65
MMLU-Pro
55
3
HLE
2
57
FrontierScience
54

Instruction Following

Seed 1.6 Flash

Seed 1.6 Flash

81

Llama 3 70B

77

81
IFEval
77

Multilingual

Seed 1.6 Flash

Seed 1.6 Flash

72.8

Llama 3 70B

67.5

76
MGSM
72
71
MMLU-ProX
65

Mathematics

Seed 1.6 Flash

Seed 1.6 Flash

67.1

Llama 3 70B

63.3

64
AIME 2023
58
66
AIME 2024
60
65
AIME 2025
59
60
HMMT Feb 2023
54
62
HMMT Feb 2024
56
61
HMMT Feb 2025
55
63
BRUMO 2025
57
72
MATH-500
71

Frequently Asked Questions

Which is better, Seed 1.6 Flash or Llama 3 70B?

Seed 1.6 Flash is ahead overall, 56 to 45. The biggest single separator in this matchup is MMMU-Pro, where the scores are 74 and 50.

Which is better for knowledge tasks, Seed 1.6 Flash or Llama 3 70B?

Seed 1.6 Flash has the edge for knowledge tasks in this comparison, averaging 47.3 versus 42.2. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.

Which is better for coding, Seed 1.6 Flash or Llama 3 70B?

Seed 1.6 Flash has the edge for coding in this comparison, averaging 27.6 versus 15.8. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.

Which is better for math, Seed 1.6 Flash or Llama 3 70B?

Seed 1.6 Flash has the edge for math in this comparison, averaging 67.1 versus 63.3. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Seed 1.6 Flash or Llama 3 70B?

Seed 1.6 Flash has the edge for reasoning in this comparison, averaging 66.8 versus 59.6. Inside this category, MRCRv2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Seed 1.6 Flash or Llama 3 70B?

Seed 1.6 Flash has the edge for agentic tasks in this comparison, averaging 54.5 versus 41.2. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Seed 1.6 Flash or Llama 3 70B?

Seed 1.6 Flash has the edge for multimodal and grounded tasks in this comparison, averaging 73.1 versus 52.3. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Seed 1.6 Flash or Llama 3 70B?

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.

Which is better for multilingual tasks, Seed 1.6 Flash or Llama 3 70B?

Seed 1.6 Flash has the edge for multilingual tasks in this comparison, averaging 72.8 versus 67.5. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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