Seed-2.0-Mini vs GPT-OSS 120B

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

Seed-2.0-Mini is clearly ahead on the aggregate, 53 to 48. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Seed-2.0-Mini's sharpest advantage is in multimodal & grounded, where it averages 73.1 against 48.8. The single biggest benchmark swing on the page is MMMU-Pro, 74 to 42. GPT-OSS 120B does hit back in coding, 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 GPT-OSS 120B.

Quick Verdict

Pick Seed-2.0-Mini if you want the stronger benchmark profile. GPT-OSS 120B only becomes the better choice if coding is the priority.

Agentic

Seed-2.0-Mini

Seed-2.0-Mini

46.2

GPT-OSS 120B

44.8

43
Terminal-Bench 2.0
43
53
BrowseComp
50
45
OSWorld-Verified
43

Coding

GPT-OSS 120B

Seed-2.0-Mini

24.7

GPT-OSS 120B

28.1

55
HumanEval
43
22
SWE-bench Verified
29
21
LiveCodeBench
25
29
SWE-bench Pro
31

Multimodal & Grounded

Seed-2.0-Mini

Seed-2.0-Mini

73.1

GPT-OSS 120B

48.8

74
MMMU-Pro
42
72
OfficeQA Pro
57

Reasoning

Seed-2.0-Mini

Seed-2.0-Mini

64.8

GPT-OSS 120B

55.2

59
SimpleQA
49
57
MuSR
47
73
BBH
73
68
LongBench v2
58
72
MRCRv2
59

Knowledge

Seed-2.0-Mini

Seed-2.0-Mini

44.6

GPT-OSS 120B

41.5

62
MMLU
51
61
GPQA
50
59
SuperGPQA
48
57
OpenBookQA
46
62
MMLU-Pro
63
1
HLE
5
54
FrontierScience
49

Instruction Following

Seed-2.0-Mini

Seed-2.0-Mini

80

GPT-OSS 120B

79

80
IFEval
79

Multilingual

Seed-2.0-Mini

Seed-2.0-Mini

71.8

GPT-OSS 120B

70.7

75
MGSM
72
70
MMLU-ProX
70

Mathematics

Seed-2.0-Mini

Seed-2.0-Mini

65.1

GPT-OSS 120B

59.5

62
AIME 2023
51
64
AIME 2024
53
63
AIME 2025
52
58
HMMT Feb 2023
47
60
HMMT Feb 2024
49
59
HMMT Feb 2025
48
61
BRUMO 2025
50
70
MATH-500
71

Frequently Asked Questions

Which is better, Seed-2.0-Mini or GPT-OSS 120B?

Seed-2.0-Mini is ahead overall, 53 to 48. The biggest single separator in this matchup is MMMU-Pro, where the scores are 74 and 42.

Which is better for knowledge tasks, Seed-2.0-Mini or GPT-OSS 120B?

Seed-2.0-Mini has the edge for knowledge tasks in this comparison, averaging 44.6 versus 41.5. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Seed-2.0-Mini or GPT-OSS 120B?

GPT-OSS 120B has the edge for coding in this comparison, averaging 28.1 versus 24.7. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Seed-2.0-Mini or GPT-OSS 120B?

Seed-2.0-Mini has the edge for math in this comparison, averaging 65.1 versus 59.5. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Seed-2.0-Mini or GPT-OSS 120B?

Seed-2.0-Mini has the edge for reasoning in this comparison, averaging 64.8 versus 55.2. Inside this category, MRCRv2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Seed-2.0-Mini or GPT-OSS 120B?

Seed-2.0-Mini has the edge for agentic tasks in this comparison, averaging 46.2 versus 44.8. 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-Mini or GPT-OSS 120B?

Seed-2.0-Mini has the edge for multimodal and grounded tasks in this comparison, averaging 73.1 versus 48.8. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Seed-2.0-Mini or GPT-OSS 120B?

Seed-2.0-Mini has the edge for instruction following in this comparison, averaging 80 versus 79. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Seed-2.0-Mini or GPT-OSS 120B?

Seed-2.0-Mini has the edge for multilingual tasks in this comparison, averaging 71.8 versus 70.7. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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