Seed-2.0-Lite vs Llama 3.1 405B

Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.

Seed-2.0-Lite is clearly ahead on the aggregate, 63 to 59. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Seed-2.0-Lite's sharpest advantage is in multimodal & grounded, where it averages 79.6 against 62.3. The single biggest benchmark swing on the page is MMMU-Pro, 80 to 60.

Seed-2.0-Lite gives you the larger context window at 256K, compared with 128K for Llama 3.1 405B.

Quick Verdict

Pick Seed-2.0-Lite if you want the stronger benchmark profile. Llama 3.1 405B only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Agentic

Seed-2.0-Lite

Seed-2.0-Lite

55.1

Llama 3.1 405B

53.9

52
Terminal-Bench 2.0
53
63
BrowseComp
58
53
OSWorld-Verified
52

Coding

Seed-2.0-Lite

Seed-2.0-Lite

41.4

Llama 3.1 405B

40.6

63
HumanEval
62
45
SWE-bench Verified
46
37
LiveCodeBench
37
45
SWE-bench Pro
43

Multimodal & Grounded

Seed-2.0-Lite

Seed-2.0-Lite

79.6

Llama 3.1 405B

62.3

80
MMMU-Pro
60
79
OfficeQA Pro
65

Reasoning

Seed-2.0-Lite

Seed-2.0-Lite

73

Llama 3.1 405B

68.3

68
SimpleQA
68
66
MuSR
66
85
BBH
82
76
LongBench v2
68
77
MRCRv2
65

Knowledge

Seed-2.0-Lite

Seed-2.0-Lite

53.9

Llama 3.1 405B

53.2

71
MMLU
70
70
GPQA
70
68
SuperGPQA
68
66
OpenBookQA
66
73
MMLU-Pro
71
7
HLE
7
66
FrontierScience
65

Instruction Following

Seed-2.0-Lite

Seed-2.0-Lite

89

Llama 3.1 405B

86

89
IFEval
86

Multilingual

Seed-2.0-Lite

Seed-2.0-Lite

82.5

Llama 3.1 405B

80.1

87
MGSM
84
80
MMLU-ProX
78

Mathematics

Seed-2.0-Lite

Seed-2.0-Lite

75

Llama 3.1 405B

74.9

71
AIME 2023
70
73
AIME 2024
72
72
AIME 2025
71
67
HMMT Feb 2023
66
69
HMMT Feb 2024
68
68
HMMT Feb 2025
67
70
BRUMO 2025
69
81
MATH-500
82

Frequently Asked Questions

Which is better, Seed-2.0-Lite or Llama 3.1 405B?

Seed-2.0-Lite is ahead overall, 63 to 59. The biggest single separator in this matchup is MMMU-Pro, where the scores are 80 and 60.

Which is better for knowledge tasks, Seed-2.0-Lite or Llama 3.1 405B?

Seed-2.0-Lite has the edge for knowledge tasks in this comparison, averaging 53.9 versus 53.2. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.

Which is better for coding, Seed-2.0-Lite or Llama 3.1 405B?

Seed-2.0-Lite has the edge for coding in this comparison, averaging 41.4 versus 40.6. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.

Which is better for math, Seed-2.0-Lite or Llama 3.1 405B?

Seed-2.0-Lite has the edge for math in this comparison, averaging 75 versus 74.9. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Seed-2.0-Lite or Llama 3.1 405B?

Seed-2.0-Lite has the edge for reasoning in this comparison, averaging 73 versus 68.3. Inside this category, MRCRv2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Seed-2.0-Lite or Llama 3.1 405B?

Seed-2.0-Lite has the edge for agentic tasks in this comparison, averaging 55.1 versus 53.9. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Seed-2.0-Lite or Llama 3.1 405B?

Seed-2.0-Lite has the edge for multimodal and grounded tasks in this comparison, averaging 79.6 versus 62.3. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Seed-2.0-Lite or Llama 3.1 405B?

Seed-2.0-Lite has the edge for instruction following in this comparison, averaging 89 versus 86. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Seed-2.0-Lite or Llama 3.1 405B?

Seed-2.0-Lite has the edge for multilingual tasks in this comparison, averaging 82.5 versus 80.1. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

Weekly LLM Benchmark Digest

Get notified when new models drop, benchmark scores change, or the leaderboard shifts. One email per week.

Free. No spam. Unsubscribe anytime. We only store derived location metadata for consent routing.