Noometry

Model comparison

GPT-4.5 vs Yi-Lightning

GPT-4.5 and Yi-Lightning score almost the same on the Noometry Index (37.2 vs 37.1), so choose on price, context window or the category you care about most.

Last verified . 17 shared benchmarks.

GPT-4.5 OpenAI

37.2

Rank #208 Confirmed

Yi-Lightning 01.AI

37.1

Rank #209 Confirmed

Summary

  • They share 17 benchmarks with published results for both. GPT-4.5 scores higher in 5 categories and Yi-Lightning in 3 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in coding, where GPT-4.5 leads 42.2 to 27.4.
  • The biggest single-benchmark swing is Aider Polyglot: 44.9% for GPT-4.5 and 12.9% for Yi-Lightning.

Side by side

GPT-4.5Yi-Lightning
ProviderOpenAI01.AI
Noometry Index37.237.1
Released2025-02-272024-12-02
WeightsProprietaryProprietary
Context window——
Max output——
Input $ / M tokens——
Output $ / M tokens——
Results tracked4218

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Category by category

Coding GPT-4.5 leads

GPT-4.5: 42.2 (#109), Yi-Lightning: 27.4 (#320)

BenchmarkGPT-4.5Yi-Lightning
Aider Polyglot44.9%12.9%
LMArena Coding13961312
WeirdML39.4%—
LiveBench Coding75.2%—

Agentic & Tool Use Not comparable

GPT-4.5: 27.9 (#97), Yi-Lightning: —

BenchmarkGPT-4.5Yi-Lightning
Cybench17.5%—

Reasoning Yi-Lightning leads

GPT-4.5: 13.9 (#330), Yi-Lightning: 25.9 (#139)

BenchmarkGPT-4.5Yi-Lightning
LMArena Hard Prompts14031302
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 Yi-Lightning leads

GPT-4.5: 32.6 (#211), Yi-Lightning: 36.2 (#172)

BenchmarkGPT-4.5Yi-Lightning
LMArena Math14121300
OTIS Mock AIME 2024-202537.8%—
LiveBench Math69.3%—
MATH Level 578.6%—

Knowledge Yi-Lightning leads

GPT-4.5: 32.5 (#211), Yi-Lightning: 35.4 (#185)

BenchmarkGPT-4.5Yi-Lightning
LMArena Expert13941286
GPQA Diamond68.7%—
Humanity's Last Exam5.4%—
Confabulations13.6%—

Multimodal Not comparable

GPT-4.5: 37.6 (#71), Yi-Lightning: —

BenchmarkGPT-4.5Yi-Lightning
LMArena Vision1195—
VPCT45%—

Multilingual GPT-4.5 leads

GPT-4.5: 52.5 (#83), Yi-Lightning: 42.2 (#196)

BenchmarkGPT-4.5Yi-Lightning
LMArena Non-English14131269
LMArena Chinese14211320
LMArena French14181305
LMArena German14571267
LMArena Japanese14161228
LMArena Korean13921192
LMArena Russian14191255
LMArena Spanish—1315

Instruction Following GPT-4.5 leads

GPT-4.5: 72.6 (#134), Yi-Lightning: 67.4 (#196)

BenchmarkGPT-4.5Yi-Lightning
LMArena Instruction Following14041278
LiveBench Instruction Following72.3%—

Long Context GPT-4.5 leads

GPT-4.5: 40.4 (#155), Yi-Lightning: 39.4 (#181)

BenchmarkGPT-4.5Yi-Lightning
LMArena Longer Query14061297
Fiction.LiveBench63.9%—

Writing & Preference GPT-4.5 leads

GPT-4.5: 56.9 (#134), Yi-Lightning: 50.2 (#184)

BenchmarkGPT-4.5Yi-Lightning
LMArena Text14171302
LMArena Creative Writing13941280
LMArena Multi-Turn14441311
Short-Story Creative Writing75.6%—
EQ-Bench Creative Writing1258—
LiveBench Language61.5%—

Frequently asked questions

Is GPT-4.5 better than Yi-Lightning?

GPT-4.5 and Yi-Lightning score almost the same on the Noometry Index (37.2 vs 37.1), so choose on price, context window or the category you care about most.

Is GPT-4.5 or Yi-Lightning better for coding?

GPT-4.5 scores higher on coding benchmarks: 42.2 versus 27.4 in the Noometry coding category.

How many benchmarks do GPT-4.5 and Yi-Lightning share?

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

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