Noometry

Model comparison

GPT-4.1 nano vs Yi-Lightning

Yi-Lightning is the stronger model overall, scoring 37.1 to 27.9 on the Noometry Index.

Last verified . 15 shared benchmarks.

GPT-4.1 nano OpenAI

27.9

Rank #327 Confirmed

Yi-Lightning 01.AI

37.1

Rank #209 Confirmed

Summary

  • They share 15 benchmarks with published results for both. GPT-4.1 nano scores higher in 1 category and Yi-Lightning in 7 categories; 6 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Yi-Lightning leads 25.9 to 8.5.

Side by side

GPT-4.1 nanoYi-Lightning
ProviderOpenAI01.AI
Noometry Index27.937.1
Released2025-04-142024-12-02
WeightsProprietaryProprietary
Context window1.05M—
Max output33K—
Input $ / M tokens$0.10—
Output $ / M tokens$0.40—
Results tracked3818

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Category by category

Coding Yi-Lightning leads

GPT-4.1 nano: 24.1 (#330), Yi-Lightning: 27.4 (#320)

BenchmarkGPT-4.1 nanoYi-Lightning
Aider Polyglot8.9%12.9%
LMArena Coding13061312
SciCode25.9%—
WeirdML19%—

Agentic & Tool Use Not comparable

GPT-4.1 nano: 26.5 (#104), Yi-Lightning: —

BenchmarkGPT-4.1 nanoYi-Lightning
Berkeley Function Calling Leaderboard33%—

Reasoning Yi-Lightning leads

GPT-4.1 nano: 8.5 (#349), Yi-Lightning: 25.9 (#139)

BenchmarkGPT-4.1 nanoYi-Lightning
LMArena Hard Prompts12861302
ARC-AGI-20%—
Kagi LLM Benchmark33.3%—
ARC-AGI-10%—
CritPt0%—
DTBench52.5%—
LMCA5.5%—
Epoch Capabilities Index129.62—

Math Yi-Lightning leads

GPT-4.1 nano: 26.9 (#252), Yi-Lightning: 36.2 (#172)

BenchmarkGPT-4.1 nanoYi-Lightning
LMArena Math12741300
OTIS Mock AIME 2024-202528.9%—
Omni-MATH36.7%—
MATH Level 570%—
FrontierMath (Feb 2025 set)1%—

Knowledge Yi-Lightning leads

GPT-4.1 nano: 21.8 (#273), Yi-Lightning: 35.4 (#185)

BenchmarkGPT-4.1 nanoYi-Lightning
LMArena Expert12721286
GPQA Diamond48.9%—
SimpleQA Verified6%—
MMLU-Pro55%—
GPQA (HELM)50.7%—

Multimodal Not comparable

GPT-4.1 nano: 29.2 (#113), Yi-Lightning: —

BenchmarkGPT-4.1 nanoYi-Lightning
LMArena Vision1063—

Multilingual Too close to call

GPT-4.1 nano: 41.6 (#205), Yi-Lightning: 42.2 (#196)

BenchmarkGPT-4.1 nanoYi-Lightning
LMArena Non-English12601269
LMArena Chinese12701320
LMArena German12881267
LMArena Japanese11981228
LMArena Russian12611255
LMArena French—1305
LMArena Korean—1192
LMArena Spanish—1315

Instruction Following Too close to call

GPT-4.1 nano: 67.8 (#193), Yi-Lightning: 67.4 (#196)

BenchmarkGPT-4.1 nanoYi-Lightning
LMArena Instruction Following12671278
IFEval84.3%—

Long Context Yi-Lightning leads

GPT-4.1 nano: 23.7 (#296), Yi-Lightning: 39.4 (#181)

BenchmarkGPT-4.1 nanoYi-Lightning
LMArena Longer Query12831297
Fiction.LiveBench25%—

Writing & Preference Yi-Lightning leads

GPT-4.1 nano: 40.5 (#243), Yi-Lightning: 50.2 (#184)

BenchmarkGPT-4.1 nanoYi-Lightning
LMArena Text12851302
LMArena Creative Writing12601280
LMArena Multi-Turn12771311
EQ-Bench Creative Writing946—
WildBench81.2%—

Frequently asked questions

Is GPT-4.1 nano better than Yi-Lightning?

Yi-Lightning is the stronger model overall, scoring 37.1 to 27.9 on the Noometry Index.

Is GPT-4.1 nano or Yi-Lightning better for coding?

Yi-Lightning scores higher on coding benchmarks: 27.4 versus 24.1 in the Noometry coding category.

How many benchmarks do GPT-4.1 nano and Yi-Lightning share?

15 benchmarks have published results for both models. GPT-4.1 nano has 38 scored results on Noometry and Yi-Lightning has 18.

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