Noometry

Model comparison

Claude Opus 5 vs Yi-Lightning

Claude Opus 5 is the stronger model overall, scoring 67.8 to 37.1 on the Noometry Index.

Last verified . 17 shared benchmarks.

Claude Opus 5 Anthropic

67.8

Rank #4 Confirmed

Yi-Lightning 01.AI

37.1

Rank #209 Confirmed

Summary

  • They share 17 benchmarks with published results for both. Claude Opus 5 scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Opus 5 leads 77.2 to 25.9.

Side by side

Claude Opus 5Yi-Lightning
ProviderAnthropic01.AI
Noometry Index67.837.1
Released2026-07-242024-12-02
WeightsProprietaryProprietary
Context window1M—
Max output128K—
Input $ / M tokens$5—
Output $ / M tokens$25—
Results tracked5718

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Category by category

Coding Claude Opus 5 leads

Claude Opus 5: 67.5 (#5), Yi-Lightning: 27.4 (#320)

BenchmarkClaude Opus 5Yi-Lightning
LMArena Coding15341312
DeepSWE73.6%—
FrontierCode53.4%—
Aider Polyglot—12.9%
CursorBench46.6%—
LMArena WebDev1691—
FrontierSWE52%—
SciCode56.4%—
WeirdML91.8%—
ALE-Bench2,165—

Agentic & Tool Use Not comparable

Claude Opus 5: 55.6 (#1), Yi-Lightning: —

BenchmarkClaude Opus 5Yi-Lightning
APEX-Agents65.8%—
OSWorld 2.031.4%—
τ²-bench Banking48.7%—
PostTrainBench35%—
BALROG63.4%—
GBAEval79.6%—
GDP.pdf24%—
Vending-Bench 211,182—

Reasoning Claude Opus 5 leads

Claude Opus 5: 77.2 (#4), Yi-Lightning: 25.9 (#139)

BenchmarkClaude Opus 5Yi-Lightning
LMArena Hard Prompts15261302
ARC-AGI-290.4%—
SimpleBench80.6%—
NYT Connections (extended)94.3%—
ARC-AGI-197.5%—
CritPt29.1%—
Chess Puzzles42%—
EBR-Bench45.7%—
Mystery Game Puzzles59%—
DTBench97.9%—
LMCA64.5%—
Bench to the Future 30.12—
Epoch Capabilities Index162.78—

Math Claude Opus 5 leads

Claude Opus 5: 86.2 (#8), Yi-Lightning: 36.2 (#172)

BenchmarkClaude Opus 5Yi-Lightning
LMArena Math15311300
FrontierMath (Tiers 1-3)85.6%—
FrontierMath Tier 473.2%—
OTIS Mock AIME 2024-202598.9%—
ProofBench99%—

Knowledge Claude Opus 5 leads

Claude Opus 5: 66.8 (#9), Yi-Lightning: 35.4 (#185)

BenchmarkClaude Opus 5Yi-Lightning
LMArena Expert15571286
GPQA Diamond93.9%—
SimpleQA Verified59.9%—

Multimodal Not comparable

Claude Opus 5: 50.8 (#8), Yi-Lightning: —

BenchmarkClaude Opus 5Yi-Lightning
LMArena Vision1319—
Blueprint-Bench 230.4%—
Furniture Assembly60.8%—
LMArena Document1516—

Multilingual Claude Opus 5 leads

Claude Opus 5: 58.8 (#4), Yi-Lightning: 42.2 (#196)

BenchmarkClaude Opus 5Yi-Lightning
LMArena Non-English15011269
LMArena Chinese15741320
LMArena French15191305
LMArena German15241267
LMArena Japanese15161228
LMArena Korean15211192
LMArena Russian15071255
LMArena Spanish15191315

Instruction Following Claude Opus 5 leads

Claude Opus 5: 79.2 (#7), Yi-Lightning: 67.4 (#196)

BenchmarkClaude Opus 5Yi-Lightning
LMArena Instruction Following15171278

Long Context Claude Opus 5 leads

Claude Opus 5: 46.5 (#21), Yi-Lightning: 39.4 (#181)

BenchmarkClaude Opus 5Yi-Lightning
LMArena Longer Query15151297

Writing & Preference Claude Opus 5 leads

Claude Opus 5: 79.2 (#1), Yi-Lightning: 50.2 (#184)

BenchmarkClaude Opus 5Yi-Lightning
LMArena Text15071302
LMArena Creative Writing14911280
LMArena Multi-Turn14991311
EQ-Bench Creative Writing2133—
EQ-Bench 41385—

Frequently asked questions

Is Claude Opus 5 better than Yi-Lightning?

Claude Opus 5 is the stronger model overall, scoring 67.8 to 37.1 on the Noometry Index.

Is Claude Opus 5 or Yi-Lightning better for coding?

Claude Opus 5 scores higher on coding benchmarks: 67.5 versus 27.4 in the Noometry coding category.

How many benchmarks do Claude Opus 5 and Yi-Lightning share?

17 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and Yi-Lightning has 18.

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