Noometry

Model comparison

Claude Sonnet 5 vs Yi-1.5-34B

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 30.6 on the Noometry Index.

Last verified . 18 shared benchmarks.

Claude Sonnet 5 Anthropic

54.6

Rank #29 Confirmed

Yi-1.5-34B 01.AI

30.6

Rank #289 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Claude Sonnet 5 scores higher in 8 categories and Yi-1.5-34B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Claude Sonnet 5 leads 55.6 to 14.8.
  • The biggest single-benchmark swing is GPQA Diamond: 90.5% for Claude Sonnet 5 and 32% for Yi-1.5-34B.
  • Yi-1.5-34B has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5Yi-1.5-34B
ProviderAnthropic01.AI
Noometry Index54.630.6
Released2026-06-292024-05-13
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked5121

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Category by category

Coding Claude Sonnet 5 leads

Claude Sonnet 5: 55.5 (#26), Yi-1.5-34B: 32.4 (#272)

BenchmarkClaude Sonnet 5Yi-1.5-34B
LMArena Coding14831169
DeepSWE53.8%—
FrontierCode42.7%—
CursorBench34.1%—
LMArena WebDev1541—
SciCode54.3%—
GSO37.3%—
WeirdML68.8%—
BigCodeBench Instruct—33.9%
BigCodeBench Complete—43.8%
ALE-Bench1,463—

Agentic & Tool Use Not comparable

Claude Sonnet 5: 42.8 (#18), Yi-1.5-34B: —

BenchmarkClaude Sonnet 5Yi-1.5-34B
APEX-Agents54.5%—
GBAEval65.3%—
LMArena Search1194—
Vending-Bench 26,378—

Reasoning Claude Sonnet 5 leads

Claude Sonnet 5: 49.1 (#39), Yi-1.5-34B: 22.5 (#191)

BenchmarkClaude Sonnet 5Yi-1.5-34B
LMArena Hard Prompts14611160
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 Index156.21—
ForecastBench61.1—

Math Claude Sonnet 5 leads

Claude Sonnet 5: 66.2 (#27), Yi-1.5-34B: 27.5 (#249)

BenchmarkClaude Sonnet 5Yi-1.5-34B
LMArena Math14671182
FrontierMath (Tiers 1-3)65.6%—
FrontierMath Tier 429.3%—
OTIS Mock AIME 2024-202594.7%—
ProofBench77%—
MATH Level 5—25.5%

Knowledge Claude Sonnet 5 leads

Claude Sonnet 5: 55.6 (#47), Yi-1.5-34B: 14.8 (#295)

BenchmarkClaude Sonnet 5Yi-1.5-34B
GPQA Diamond90.5%32%
LMArena Expert14901144
SimpleQA Verified33.7%—

Multimodal Not comparable

Claude Sonnet 5: 42.4 (#31), Yi-1.5-34B: —

BenchmarkClaude Sonnet 5Yi-1.5-34B
LMArena Vision1274—
Blueprint-Bench 224.9%—
LMArena Document1466—

Multilingual Claude Sonnet 5 leads

Claude Sonnet 5: 53.8 (#55), Yi-1.5-34B: 32.3 (#256)

BenchmarkClaude Sonnet 5Yi-1.5-34B
LMArena Non-English14311121
LMArena Chinese14771213
LMArena French14601156
LMArena German14401111
LMArena Japanese14221021
LMArena Korean14111005
LMArena Russian14511091
LMArena Spanish14371121

Instruction Following Claude Sonnet 5 leads

Claude Sonnet 5: 76.3 (#41), Yi-1.5-34B: 59.2 (#257)

BenchmarkClaude Sonnet 5Yi-1.5-34B
LMArena Instruction Following14521139

Long Context Claude Sonnet 5 leads

Claude Sonnet 5: 44.8 (#55), Yi-1.5-34B: 34.6 (#248)

BenchmarkClaude Sonnet 5Yi-1.5-34B
LMArena Longer Query14631143

Writing & Preference Claude Sonnet 5 leads

Claude Sonnet 5: 69.2 (#25), Yi-1.5-34B: 37.4 (#257)

BenchmarkClaude Sonnet 5Yi-1.5-34B
LMArena Text14421173
LMArena Creative Writing14161135
LMArena Multi-Turn14541153
EQ-Bench Creative Writing1794—
EQ-Bench 41236—

Frequently asked questions

Is Claude Sonnet 5 better than Yi-1.5-34B?

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 30.6 on the Noometry Index.

Is Claude Sonnet 5 or Yi-1.5-34B better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 32.4 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5 and Yi-1.5-34B share?

18 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Yi-1.5-34B has 21.

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