Llama 3.1 405B vs Seed-2.0-Mini

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

Llama 3.1 405B is clearly ahead on the aggregate, 59 to 53. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Llama 3.1 405B's sharpest advantage is in coding, where it averages 40.6 against 24.7. The single biggest benchmark swing on the page is SWE-bench Verified, 46 to 22. Seed-2.0-Mini does hit back in multimodal & grounded, so the answer changes if that is the part of the workload you care about most.

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

Quick Verdict

Pick Llama 3.1 405B if you want the stronger benchmark profile. Seed-2.0-Mini only becomes the better choice if multimodal & grounded is the priority or you need the larger 256K context window.

Agentic

Llama 3.1 405B

Llama 3.1 405B

53.9

Seed-2.0-Mini

46.2

53
Terminal-Bench 2.0
43
58
BrowseComp
53
52
OSWorld-Verified
45

Coding

Llama 3.1 405B

Llama 3.1 405B

40.6

Seed-2.0-Mini

24.7

62
HumanEval
55
46
SWE-bench Verified
22
37
LiveCodeBench
21
43
SWE-bench Pro
29

Multimodal & Grounded

Seed-2.0-Mini

Llama 3.1 405B

62.3

Seed-2.0-Mini

73.1

60
MMMU-Pro
74
65
OfficeQA Pro
72

Reasoning

Llama 3.1 405B

Llama 3.1 405B

68.3

Seed-2.0-Mini

64.8

68
SimpleQA
59
66
MuSR
57
82
BBH
73
68
LongBench v2
68
65
MRCRv2
72

Knowledge

Llama 3.1 405B

Llama 3.1 405B

53.2

Seed-2.0-Mini

44.6

70
MMLU
62
70
GPQA
61
68
SuperGPQA
59
66
OpenBookQA
57
71
MMLU-Pro
62
7
HLE
1
65
FrontierScience
54

Instruction Following

Llama 3.1 405B

Llama 3.1 405B

86

Seed-2.0-Mini

80

86
IFEval
80

Multilingual

Llama 3.1 405B

Llama 3.1 405B

80.1

Seed-2.0-Mini

71.8

84
MGSM
75
78
MMLU-ProX
70

Mathematics

Llama 3.1 405B

Llama 3.1 405B

74.9

Seed-2.0-Mini

65.1

70
AIME 2023
62
72
AIME 2024
64
71
AIME 2025
63
66
HMMT Feb 2023
58
68
HMMT Feb 2024
60
67
HMMT Feb 2025
59
69
BRUMO 2025
61
82
MATH-500
70

Frequently Asked Questions

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

Llama 3.1 405B is ahead overall, 59 to 53. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 46 and 22.

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

Llama 3.1 405B has the edge for knowledge tasks in this comparison, averaging 53.2 versus 44.6. Inside this category, FrontierScience is the benchmark that creates the most daylight between them.

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

Llama 3.1 405B has the edge for coding in this comparison, averaging 40.6 versus 24.7. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

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

Llama 3.1 405B has the edge for math in this comparison, averaging 74.9 versus 65.1. Inside this category, MATH-500 is the benchmark that creates the most daylight between them.

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

Llama 3.1 405B has the edge for reasoning in this comparison, averaging 68.3 versus 64.8. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

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

Llama 3.1 405B has the edge for agentic tasks in this comparison, averaging 53.9 versus 46.2. 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, Llama 3.1 405B or Seed-2.0-Mini?

Seed-2.0-Mini has the edge for multimodal and grounded tasks in this comparison, averaging 73.1 versus 62.3. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

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

Llama 3.1 405B has the edge for instruction following in this comparison, averaging 86 versus 80. Inside this category, IFEval is the benchmark that creates the most daylight between them.

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

Llama 3.1 405B has the edge for multilingual tasks in this comparison, averaging 80.1 versus 71.8. 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.