Seed 1.6 vs Nemotron Ultra 253B

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

Seed 1.6 is clearly ahead on the aggregate, 65 to 48. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Seed 1.6's sharpest advantage is in multimodal & grounded, where it averages 79.6 against 44.7. The single biggest benchmark swing on the page is MMMU-Pro, 80 to 37.

Seed 1.6 gives you the larger context window at 256K, compared with 32K for Nemotron Ultra 253B.

Quick Verdict

Pick Seed 1.6 if you want the stronger benchmark profile. Nemotron Ultra 253B only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Agentic

Seed 1.6

Seed 1.6

62.3

Nemotron Ultra 253B

46.7

63
Terminal-Bench 2.0
46
67
BrowseComp
50
58
OSWorld-Verified
45

Coding

Seed 1.6

Seed 1.6

42.4

Nemotron Ultra 253B

33.7

64
HumanEval
41
46
SWE-bench Verified
31
38
LiveCodeBench
30
46
SWE-bench Pro
38

Multimodal & Grounded

Seed 1.6

Seed 1.6

79.6

Nemotron Ultra 253B

44.7

80
MMMU-Pro
37
79
OfficeQA Pro
54

Reasoning

Seed 1.6

Seed 1.6

74.5

Nemotron Ultra 253B

53.3

69
SimpleQA
47
69
MuSR
45
86
BBH
77
77
LongBench v2
55
78
MRCRv2
56

Knowledge

Seed 1.6

Seed 1.6

56.4

Nemotron Ultra 253B

42.4

73
MMLU
49
72
GPQA
48
70
SuperGPQA
46
68
OpenBookQA
44
75
MMLU-Pro
63
11
HLE
11
68
FrontierScience
49

Instruction Following

Seed 1.6

Seed 1.6

87

Nemotron Ultra 253B

78

87
IFEval
78

Multilingual

Seed 1.6

Seed 1.6

83.4

Nemotron Ultra 253B

70.1

88
MGSM
74
81
MMLU-ProX
68

Mathematics

Seed 1.6

Seed 1.6

75.9

Nemotron Ultra 253B

59.7

72
AIME 2023
49
74
AIME 2024
51
73
AIME 2025
50
68
HMMT Feb 2023
45
70
HMMT Feb 2024
47
69
HMMT Feb 2025
46
71
BRUMO 2025
48
82
MATH-500
74

Frequently Asked Questions

Which is better, Seed 1.6 or Nemotron Ultra 253B?

Seed 1.6 is ahead overall, 65 to 48. The biggest single separator in this matchup is MMMU-Pro, where the scores are 80 and 37.

Which is better for knowledge tasks, Seed 1.6 or Nemotron Ultra 253B?

Seed 1.6 has the edge for knowledge tasks in this comparison, averaging 56.4 versus 42.4. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, Seed 1.6 or Nemotron Ultra 253B?

Seed 1.6 has the edge for coding in this comparison, averaging 42.4 versus 33.7. Inside this category, HumanEval is the benchmark that creates the most daylight between them.

Which is better for math, Seed 1.6 or Nemotron Ultra 253B?

Seed 1.6 has the edge for math in this comparison, averaging 75.9 versus 59.7. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, Seed 1.6 or Nemotron Ultra 253B?

Seed 1.6 has the edge for reasoning in this comparison, averaging 74.5 versus 53.3. Inside this category, MuSR is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Seed 1.6 or Nemotron Ultra 253B?

Seed 1.6 has the edge for agentic tasks in this comparison, averaging 62.3 versus 46.7. 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 or Nemotron Ultra 253B?

Seed 1.6 has the edge for multimodal and grounded tasks in this comparison, averaging 79.6 versus 44.7. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Seed 1.6 or Nemotron Ultra 253B?

Seed 1.6 has the edge for instruction following in this comparison, averaging 87 versus 78. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Seed 1.6 or Nemotron Ultra 253B?

Seed 1.6 has the edge for multilingual tasks in this comparison, averaging 83.4 versus 70.1. Inside this category, MGSM is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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