Noometry

Model comparison

GPT-4.5 vs Nemotron 3.5 Lightning

Nemotron 3.5 Lightning is the stronger model overall, scoring 39.3 to 36.9 on the Noometry Index.

Last verified . 17 shared benchmarks.

GPT-4.5 OpenAI

36.9

Rank #200 Confirmed

Nemotron 3.5 Lightning NVIDIA

39.3

Rank #156 Confirmed

Summary

  • They share 17 benchmarks with published results for both. GPT-4.5 scores higher in 5 categories and Nemotron 3.5 Lightning in 3 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Nemotron 3.5 Lightning leads 25.7 to 14.1.
  • Nemotron 3.5 Lightning has downloadable open weights; the other is API-only.

Side by side

GPT-4.5Nemotron 3.5 Lightning
ProviderOpenAINVIDIA
Noometry Index36.939.3
Released2025-02-272026-08-11
WeightsProprietaryOpen
Context window—262K
Max output—262K
Input $ / M tokens—$0.06
Output $ / M tokens—$0.16
Results tracked4218

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Category by category

Coding GPT-4.5 leads

GPT-4.5: 41.8 (#102), Nemotron 3.5 Lightning: 39.6 (#143)

BenchmarkGPT-4.5Nemotron 3.5 Lightning
LMArena Coding13971370
Aider Polyglot44.9%—
WeirdML39.4%—
LiveBench Coding75.2%—

Agentic & Tool Use Not comparable

GPT-4.5: 27.6 (#92), Nemotron 3.5 Lightning: —

BenchmarkGPT-4.5Nemotron 3.5 Lightning
Cybench17.5%—

Reasoning Nemotron 3.5 Lightning leads

GPT-4.5: 14.1 (#320), Nemotron 3.5 Lightning: 25.7 (#128)

BenchmarkGPT-4.5Nemotron 3.5 Lightning
LMArena Hard Prompts14041335
ARC-AGI-20.8%—
SimpleBench34.5%—
ARC-AGI-110.3%—
EnigmaEval3.2%—
LiveBench Reasoning71.1%—
LiveBench Data Analysis64.3%—
Epoch Capabilities Index136.74—
ForecastBench61.7—
LiveBench69%—

Math Nemotron 3.5 Lightning leads

GPT-4.5: 31.0 (#200), Nemotron 3.5 Lightning: 34.7 (#156)

BenchmarkGPT-4.5Nemotron 3.5 Lightning
LMArena Math14121355
OTIS Mock AIME 2024-202537.8%—
LiveBench Math69.3%—
MATH Level 578.6%—

Knowledge Nemotron 3.5 Lightning leads

GPT-4.5: 32.4 (#205), Nemotron 3.5 Lightning: 36.9 (#154)

BenchmarkGPT-4.5Nemotron 3.5 Lightning
LMArena Expert13941354
GPQA Diamond68.7%—
Humanity's Last Exam5.4%—
Confabulations13.6%—

Multimodal Not comparable

GPT-4.5: 37.0 (#68), Nemotron 3.5 Lightning: —

BenchmarkGPT-4.5Nemotron 3.5 Lightning
LMArena Vision1195—
VPCT45%—

Multilingual GPT-4.5 leads

GPT-4.5: 52.7 (#78), Nemotron 3.5 Lightning: 44.0 (#175)

BenchmarkGPT-4.5Nemotron 3.5 Lightning
LMArena Non-English14131292
LMArena Chinese14211356
LMArena French14171369
LMArena German14571280
LMArena Japanese14161213
LMArena Korean13921233
LMArena Russian14191257
LMArena Spanish—1321

Instruction Following GPT-4.5 leads

GPT-4.5: 72.8 (#129), Nemotron 3.5 Lightning: 69.8 (#166)

BenchmarkGPT-4.5Nemotron 3.5 Lightning
LMArena Instruction Following14041317
LiveBench Instruction Following72.3%—

Long Context Too close to call

GPT-4.5: 40.4 (#150), Nemotron 3.5 Lightning: 39.9 (#160)

BenchmarkGPT-4.5Nemotron 3.5 Lightning
LMArena Longer Query14061312
Fiction.LiveBench63.9%—

Writing & Preference GPT-4.5 leads

GPT-4.5: 57.1 (#129), Nemotron 3.5 Lightning: 48.5 (#198)

BenchmarkGPT-4.5Nemotron 3.5 Lightning
LMArena Text14171324
LMArena Creative Writing13941254
EQ-Bench Creative Writing12581280
LMArena Multi-Turn14441327
Short-Story Creative Writing75.6%—
LiveBench Language61.5%—

Frequently asked questions

Is GPT-4.5 better than Nemotron 3.5 Lightning?

Nemotron 3.5 Lightning is the stronger model overall, scoring 39.3 to 36.9 on the Noometry Index.

Is GPT-4.5 or Nemotron 3.5 Lightning better for coding?

GPT-4.5 scores higher on coding benchmarks: 41.8 versus 39.6 in the Noometry coding category.

How many benchmarks do GPT-4.5 and Nemotron 3.5 Lightning share?

17 benchmarks have published results for both models. GPT-4.5 has 42 scored results on Noometry and Nemotron 3.5 Lightning has 18.

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