GPT-5.2 Instant vs Nemotron 3 Ultra 500B

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

GPT-5.2 Instant is clearly ahead on the aggregate, 85 to 64. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

GPT-5.2 Instant's sharpest advantage is in coding, where it averages 75.5 against 43.8. The single biggest benchmark swing on the page is SWE-bench Verified, 75 to 42.

Nemotron 3 Ultra 500B gives you the larger context window at 10M, compared with 128K for GPT-5.2 Instant.

Quick Verdict

Pick GPT-5.2 Instant if you want the stronger benchmark profile. Nemotron 3 Ultra 500B only becomes the better choice if you need the larger 10M context window.

Agentic

GPT-5.2 Instant

GPT-5.2 Instant

79.6

Nemotron 3 Ultra 500B

62.8

83
Terminal-Bench 2.0
63
82
BrowseComp
69
74
OSWorld-Verified
58

Coding

GPT-5.2 Instant

GPT-5.2 Instant

75.5

Nemotron 3 Ultra 500B

43.8

87
HumanEval
66
75
SWE-bench Verified
42
74
LiveCodeBench
41
77
SWE-bench Pro
47

Multimodal & Grounded

GPT-5.2 Instant

GPT-5.2 Instant

93.1

Nemotron 3 Ultra 500B

66.9

94
MMMU-Pro
61
92
OfficeQA Pro
74

Reasoning

GPT-5.2 Instant

GPT-5.2 Instant

90.9

Nemotron 3 Ultra 500B

77.2

95
SimpleQA
71
93
MuSR
69
96
BBH
85
89
LongBench v2
81
84
MRCRv2
85

Knowledge

GPT-5.2 Instant

GPT-5.2 Instant

79.8

Nemotron 3 Ultra 500B

57

98
MMLU
74
97
GPQA
73
95
SuperGPQA
71
93
OpenBookQA
69
88
MMLU-Pro
73
43
HLE
15
91
FrontierScience
67

Instruction Following

GPT-5.2 Instant

GPT-5.2 Instant

95

Nemotron 3 Ultra 500B

84

95
IFEval
84

Multilingual

GPT-5.2 Instant

GPT-5.2 Instant

94.4

Nemotron 3 Ultra 500B

79.7

95
MGSM
81
94
MMLU-ProX
79

Mathematics

GPT-5.2 Instant

GPT-5.2 Instant

97.2

Nemotron 3 Ultra 500B

78

99
AIME 2023
74
99
AIME 2024
76
98
AIME 2025
75
95
HMMT Feb 2023
70
97
HMMT Feb 2024
72
96
HMMT Feb 2025
71
96
BRUMO 2025
73
98
MATH-500
84

Frequently Asked Questions

Which is better, GPT-5.2 Instant or Nemotron 3 Ultra 500B?

GPT-5.2 Instant is ahead overall, 85 to 64. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 75 and 42.

Which is better for knowledge tasks, GPT-5.2 Instant or Nemotron 3 Ultra 500B?

GPT-5.2 Instant has the edge for knowledge tasks in this comparison, averaging 79.8 versus 57. Inside this category, HLE is the benchmark that creates the most daylight between them.

Which is better for coding, GPT-5.2 Instant or Nemotron 3 Ultra 500B?

GPT-5.2 Instant has the edge for coding in this comparison, averaging 75.5 versus 43.8. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for math, GPT-5.2 Instant or Nemotron 3 Ultra 500B?

GPT-5.2 Instant has the edge for math in this comparison, averaging 97.2 versus 78. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.

Which is better for reasoning, GPT-5.2 Instant or Nemotron 3 Ultra 500B?

GPT-5.2 Instant has the edge for reasoning in this comparison, averaging 90.9 versus 77.2. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, GPT-5.2 Instant or Nemotron 3 Ultra 500B?

GPT-5.2 Instant has the edge for agentic tasks in this comparison, averaging 79.6 versus 62.8. 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, GPT-5.2 Instant or Nemotron 3 Ultra 500B?

GPT-5.2 Instant has the edge for multimodal and grounded tasks in this comparison, averaging 93.1 versus 66.9. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, GPT-5.2 Instant or Nemotron 3 Ultra 500B?

GPT-5.2 Instant has the edge for instruction following in this comparison, averaging 95 versus 84. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, GPT-5.2 Instant or Nemotron 3 Ultra 500B?

GPT-5.2 Instant has the edge for multilingual tasks in this comparison, averaging 94.4 versus 79.7. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.

Last updated: March 12, 2026

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