Seed-2.0-Lite vs GPT-OSS 120B

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 48. 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 48.8. The single biggest benchmark swing on the page is MMMU-Pro, 80 to 42.

Seed-2.0-Lite gives you the larger context window at 256K, compared with 128K for GPT-OSS 120B.

Quick Verdict

Pick Seed-2.0-Lite if you want the stronger benchmark profile. GPT-OSS 120B 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

GPT-OSS 120B

44.8

52
Terminal-Bench 2.0
43
63
BrowseComp
50
53
OSWorld-Verified
43

Coding

Seed-2.0-Lite

Seed-2.0-Lite

41.4

GPT-OSS 120B

28.1

63
HumanEval
43
45
SWE-bench Verified
29
37
LiveCodeBench
25
45
SWE-bench Pro
31

Multimodal & Grounded

Seed-2.0-Lite

Seed-2.0-Lite

79.6

GPT-OSS 120B

48.8

80
MMMU-Pro
42
79
OfficeQA Pro
57

Reasoning

Seed-2.0-Lite

Seed-2.0-Lite

73

GPT-OSS 120B

55.2

68
SimpleQA
49
66
MuSR
47
85
BBH
73
76
LongBench v2
58
77
MRCRv2
59

Knowledge

Seed-2.0-Lite

Seed-2.0-Lite

53.9

GPT-OSS 120B

41.5

71
MMLU
51
70
GPQA
50
68
SuperGPQA
48
66
OpenBookQA
46
73
MMLU-Pro
63
7
HLE
5
66
FrontierScience
49

Instruction Following

Seed-2.0-Lite

Seed-2.0-Lite

89

GPT-OSS 120B

79

89
IFEval
79

Multilingual

Seed-2.0-Lite

Seed-2.0-Lite

82.5

GPT-OSS 120B

70.7

87
MGSM
72
80
MMLU-ProX
70

Mathematics

Seed-2.0-Lite

Seed-2.0-Lite

75

GPT-OSS 120B

59.5

71
AIME 2023
51
73
AIME 2024
53
72
AIME 2025
52
67
HMMT Feb 2023
47
69
HMMT Feb 2024
49
68
HMMT Feb 2025
48
70
BRUMO 2025
50
81
MATH-500
71

Frequently Asked Questions

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

Seed-2.0-Lite is ahead overall, 63 to 48. The biggest single separator in this matchup is MMMU-Pro, where the scores are 80 and 42.

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

Seed-2.0-Lite has the edge for knowledge tasks in this comparison, averaging 53.9 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-Lite or GPT-OSS 120B?

Seed-2.0-Lite has the edge for coding in this comparison, averaging 41.4 versus 28.1. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

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

Seed-2.0-Lite has the edge for math in this comparison, averaging 75 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-Lite or GPT-OSS 120B?

Seed-2.0-Lite has the edge for reasoning in this comparison, averaging 73 versus 55.2. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

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

Seed-2.0-Lite has the edge for agentic tasks in this comparison, averaging 55.1 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-Lite or GPT-OSS 120B?

Seed-2.0-Lite has the edge for multimodal and grounded tasks in this comparison, averaging 79.6 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-Lite or GPT-OSS 120B?

Seed-2.0-Lite has the edge for instruction following in this comparison, averaging 89 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-Lite or GPT-OSS 120B?

Seed-2.0-Lite has the edge for multilingual tasks in this comparison, averaging 82.5 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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