Noometry

Model comparison

Claude Opus 4.1 vs Yi-Lightning

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 37.1 on the Noometry Index.

Last verified . 17 shared benchmarks.

Claude Opus 4.1 Anthropic

41.0

Rank #142 Confirmed

Yi-Lightning 01.AI

37.1

Rank #209 Confirmed

Summary

  • They share 17 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and Yi-Lightning in 1 category; 8 gaps are clear of the uncertainty.
  • The widest gap is in coding, where Claude Opus 4.1 leads 44.4 to 27.4.

Side by side

Claude Opus 4.1Yi-Lightning
ProviderAnthropic01.AI
Noometry Index41.037.1
Released2025-08-052024-12-02
WeightsProprietaryProprietary
Context window200K—
Max output32K—
Input $ / M tokens$15—
Output $ / M tokens$75—
Results tracked4818

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Category by category

Coding Claude Opus 4.1 leads

Claude Opus 4.1: 44.4 (#73), Yi-Lightning: 27.4 (#320)

BenchmarkClaude Opus 4.1Yi-Lightning
LMArena Coding14791312
SWE-bench Verified73.3%—
Aider Polyglot—12.9%
LMArena WebDev1390—
WeirdML45.9%—
ALE-Bench674.77—
AlgoTune1.34—

Agentic & Tool Use Not comparable

Claude Opus 4.1: 35.0 (#41), Yi-Lightning: —

BenchmarkClaude Opus 4.1Yi-Lightning
Terminal-Bench38%—
GDPval43.6%—
Cybench42%—
DeepResearch Bench48.3%—
LMArena Search1148—
METR Time Horizons66.8%—

Reasoning Claude Opus 4.1 leads

Claude Opus 4.1: 32.2 (#76), Yi-Lightning: 25.9 (#139)

BenchmarkClaude Opus 4.1Yi-Lightning
LMArena Hard Prompts14431302
SimpleBench60%—
Chess Puzzles7%—
EnigmaEval7.2%—
EBR-Bench7.9%—
Mystery Game Puzzles21%—
DTBench80%—
LMCA37.1%—
Epoch Capabilities Index144.12—
ForecastBench62—

Math Yi-Lightning leads

Claude Opus 4.1: 22.3 (#277), Yi-Lightning: 36.2 (#172)

BenchmarkClaude Opus 4.1Yi-Lightning
LMArena Math14311300
FrontierMath (Tiers 1-3)12.6%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202568.9%—
FrontierMath (Feb 2025 set)7.2%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Opus 4.1 leads

Claude Opus 4.1: 42.0 (#101), Yi-Lightning: 35.4 (#185)

BenchmarkClaude Opus 4.1Yi-Lightning
LMArena Expert14391286
GPQA Diamond77.3%—
Humanity's Last Exam11.5%—
Confabulations17.1%—
Vectara Hallucination Rate11.8%—

Multimodal Not comparable

Claude Opus 4.1: 26.8 (#119), Yi-Lightning: —

BenchmarkClaude Opus 4.1Yi-Lightning
VPCT35%—

Multilingual Claude Opus 4.1 leads

Claude Opus 4.1: 52.0 (#95), Yi-Lightning: 42.2 (#196)

BenchmarkClaude Opus 4.1Yi-Lightning
LMArena Non-English14051269
LMArena Chinese14271320
LMArena French14311305
LMArena German14131267
LMArena Japanese13781228
LMArena Korean13801192
LMArena Russian14221255
LMArena Spanish14481315

Instruction Following Claude Opus 4.1 leads

Claude Opus 4.1: 75.6 (#58), Yi-Lightning: 67.4 (#196)

BenchmarkClaude Opus 4.1Yi-Lightning
LMArena Instruction Following14351278

Long Context Claude Opus 4.1 leads

Claude Opus 4.1: 44.5 (#63), Yi-Lightning: 39.4 (#181)

BenchmarkClaude Opus 4.1Yi-Lightning
LMArena Longer Query14551297

Writing & Preference Claude Opus 4.1 leads

Claude Opus 4.1: 62.4 (#74), Yi-Lightning: 50.2 (#184)

BenchmarkClaude Opus 4.1Yi-Lightning
LMArena Text14191302
LMArena Creative Writing14121280
LMArena Multi-Turn14441311
Short-Story Creative Writing84.7%—

Frequently asked questions

Is Claude Opus 4.1 better than Yi-Lightning?

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 37.1 on the Noometry Index.

Is Claude Opus 4.1 or Yi-Lightning better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 27.4 in the Noometry coding category.

How many benchmarks do Claude Opus 4.1 and Yi-Lightning share?

17 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Yi-Lightning has 18.

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