Noometry

Model comparison

Claude Sonnet 5 vs Yi-Lightning

Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 36.5 on the Noometry Index.

Last verified . 17 shared benchmarks.

Claude Sonnet 5 Anthropic

54.5

Rank #26 Confirmed

Yi-Lightning 01.AI

36.5

Rank #206 Confirmed

Summary

  • They share 17 benchmarks with published results for both. Claude Sonnet 5 scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5 leads 66.1 to 33.5.

Side by side

Claude Sonnet 5Yi-Lightning
ProviderAnthropic01.AI
Noometry Index54.536.5
Released2026-06-292024-12-02
WeightsProprietaryProprietary
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked5118

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Category by category

Coding Claude Sonnet 5 leads

Claude Sonnet 5: 55.5 (#20), Yi-Lightning: 27.0 (#315)

BenchmarkClaude Sonnet 5Yi-Lightning
LMArena Coding14831313
DeepSWE53.8%—
FrontierCode42.7%—
Aider Polyglot—12.9%
CursorBench34.1%—
LMArena WebDev1540—
SciCode53.6%—
GSO37.3%—
WeirdML68.8%—
ALE-Bench1,463—

Agentic & Tool Use Not comparable

Claude Sonnet 5: 42.7 (#16), Yi-Lightning: —

BenchmarkClaude Sonnet 5Yi-Lightning
APEX-Agents54.5%—
GBAEval65.3%—
LMArena Search1194—
Vending-Bench 26,378—

Reasoning Claude Sonnet 5 leads

Claude Sonnet 5: 48.2 (#37), Yi-Lightning: 24.9 (#137)

BenchmarkClaude Sonnet 5Yi-Lightning
LMArena Hard Prompts14611302
SimpleBench60.6%—
NYT Connections (extended)75.1%—
CritPt16.9%—
Chess Puzzles35%—
Mystery Game Puzzles35%—
DTBench92.5%—
LMCA50%—
Surface Evolver Bench60%—
Bench to the Future 30.14—
Epoch Capabilities Index156.34—
ForecastBench61.1—

Math Claude Sonnet 5 leads

Claude Sonnet 5: 66.1 (#21), Yi-Lightning: 33.5 (#173)

BenchmarkClaude Sonnet 5Yi-Lightning
LMArena Math14671300
FrontierMath (Tiers 1-3)65.6%—
FrontierMath Tier 429.3%—
OTIS Mock AIME 2024-202594.7%—
ProofBench77%—

Knowledge Claude Sonnet 5 leads

Claude Sonnet 5: 55.7 (#42), Yi-Lightning: 34.8 (#182)

BenchmarkClaude Sonnet 5Yi-Lightning
LMArena Expert14911286
GPQA Diamond90.5%—
SimpleQA Verified33.7%—

Multimodal Not comparable

Claude Sonnet 5: 42.4 (#26), Yi-Lightning: —

BenchmarkClaude Sonnet 5Yi-Lightning
LMArena Vision1275—
Blueprint-Bench 224.9%—
LMArena Document1466—

Multilingual Claude Sonnet 5 leads

Claude Sonnet 5: 54.0 (#55), Yi-Lightning: 42.4 (#191)

BenchmarkClaude Sonnet 5Yi-Lightning
LMArena Non-English14311269
LMArena Chinese14751320
LMArena French14571304
LMArena German14481267
LMArena Japanese14221228
LMArena Korean14111192
LMArena Russian14521255
LMArena Spanish14361315

Instruction Following Claude Sonnet 5 leads

Claude Sonnet 5: 76.6 (#39), Yi-Lightning: 67.6 (#191)

BenchmarkClaude Sonnet 5Yi-Lightning
LMArena Instruction Following14531278

Long Context Claude Sonnet 5 leads

Claude Sonnet 5: 44.8 (#53), Yi-Lightning: 39.4 (#176)

BenchmarkClaude Sonnet 5Yi-Lightning
LMArena Longer Query14641297

Writing & Preference Claude Sonnet 5 leads

Claude Sonnet 5: 69.4 (#24), Yi-Lightning: 50.4 (#178)

BenchmarkClaude Sonnet 5Yi-Lightning
LMArena Text14431302
LMArena Creative Writing14161280
LMArena Multi-Turn14541311
EQ-Bench Creative Writing1794—
EQ-Bench 41236—

Frequently asked questions

Is Claude Sonnet 5 better than Yi-Lightning?

Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 36.5 on the Noometry Index.

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

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 27.0 in the Noometry coding category.

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

17 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Yi-Lightning has 18.

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