Noometry

Model comparison

GPT-4.1 vs Yi-Lightning

Yi-Lightning is the stronger model overall, scoring 37.1 to 35.9 on the Noometry Index.

Last verified . 18 shared benchmarks.

GPT-4.1 OpenAI

35.9

Rank #219 Confirmed

Yi-Lightning 01.AI

37.1

Rank #209 Confirmed

Summary

  • They share 18 benchmarks with published results for both. GPT-4.1 scores higher in 6 categories and Yi-Lightning in 2 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Yi-Lightning leads 25.9 to 11.7.
  • The biggest single-benchmark swing is Aider Polyglot: 52.4% for GPT-4.1 and 12.9% for Yi-Lightning.

Side by side

GPT-4.1Yi-Lightning
ProviderOpenAI01.AI
Noometry Index35.937.1
Released2025-04-142024-12-02
WeightsProprietaryProprietary
Context window1.05M—
Max output33K—
Input $ / M tokens$2—
Output $ / M tokens$8—
Results tracked5218

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Category by category

Coding GPT-4.1 leads

GPT-4.1: 34.4 (#238), Yi-Lightning: 27.4 (#320)

BenchmarkGPT-4.1Yi-Lightning
Aider Polyglot52.4%12.9%
LMArena Coding13911312
SWE-bench Verified48.5%—
SWE-bench Verified (bash only)39.6%—
WeirdML39%—
CadEval42%—
ALE-Bench558.1—

Agentic & Tool Use Not comparable

GPT-4.1: 34.7 (#43), Yi-Lightning: —

BenchmarkGPT-4.1Yi-Lightning
Berkeley Function Calling Leaderboard54%—

Reasoning Yi-Lightning leads

GPT-4.1: 11.7 (#339), Yi-Lightning: 25.9 (#139)

BenchmarkGPT-4.1Yi-Lightning
LMArena Hard Prompts13841302
ARC-AGI-20.4%—
SimpleBench27%—
Kagi LLM Benchmark52.3%—
ARC-AGI-15.5%—
Chess Puzzles6%—
EnigmaEval2.2%—
DTBench68.3%—
LMCA25.6%—
Epoch Capabilities Index136.78—
ForecastBench61.5—

Math Yi-Lightning leads

GPT-4.1: 22.3 (#280), Yi-Lightning: 36.2 (#172)

BenchmarkGPT-4.1Yi-Lightning
LMArena Math13701300
FrontierMath (Tiers 1-3)6%—
OTIS Mock AIME 2024-202538.3%—
Omni-MATH47.1%—
MATH Level 583%—
FrontierMath (Feb 2025 set)5.5%—
FrontierMath Tier 4 (v1)0%—

Knowledge GPT-4.1 leads

GPT-4.1: 37.1 (#160), Yi-Lightning: 35.4 (#185)

BenchmarkGPT-4.1Yi-Lightning
LMArena Expert13641286
GPQA Diamond66.9%—
Humanity's Last Exam5.4%—
SimpleQA Verified31.1%—
MMLU-Pro81.1%—
Vectara Hallucination Rate5.6%—
GPQA (HELM)65.9%—

Multimodal Not comparable

GPT-4.1: 38.2 (#67), Yi-Lightning: —

BenchmarkGPT-4.1Yi-Lightning
LMArena Vision1211—
GeoBench72%—

Multilingual GPT-4.1 leads

GPT-4.1: 49.4 (#133), Yi-Lightning: 42.2 (#196)

BenchmarkGPT-4.1Yi-Lightning
LMArena Non-English13701269
LMArena Chinese13821320
LMArena French13821305
LMArena German13811267
LMArena Japanese13191228
LMArena Korean13391192
LMArena Russian13771255
LMArena Spanish13761315

Instruction Following GPT-4.1 leads

GPT-4.1: 71.3 (#153), Yi-Lightning: 67.4 (#196)

BenchmarkGPT-4.1Yi-Lightning
LMArena Instruction Following13671278
IFEval83.8%—

Long Context Too close to call

GPT-4.1: 40.0 (#163), Yi-Lightning: 39.4 (#181)

BenchmarkGPT-4.1Yi-Lightning
LMArena Longer Query13851297
Fiction.LiveBench63.9%—

Writing & Preference GPT-4.1 leads

GPT-4.1: 57.6 (#125), Yi-Lightning: 50.2 (#184)

BenchmarkGPT-4.1Yi-Lightning
LMArena Text13831302
LMArena Creative Writing13631280
LMArena Multi-Turn13981311
EQ-Bench Creative Writing1420—
WildBench85.4%—

Frequently asked questions

Is GPT-4.1 better than Yi-Lightning?

Yi-Lightning is the stronger model overall, scoring 37.1 to 35.9 on the Noometry Index.

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

GPT-4.1 scores higher on coding benchmarks: 34.4 versus 27.4 in the Noometry coding category.

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

18 benchmarks have published results for both models. GPT-4.1 has 52 scored results on Noometry and Yi-Lightning has 18.

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