Noometry

Model comparison

Claude Sonnet 5.5 vs Yi-34B

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 27.8 on the Noometry Index.

Last verified . 14 shared benchmarks.

Claude Sonnet 5.5 Anthropic

61.9

Rank #10 Confirmed

Yi-34B 01.AI

27.8

Rank #329 Confirmed

Summary

  • They share 14 benchmarks with published results for both. Claude Sonnet 5.5 scores higher in 8 categories and Yi-34B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 21.6.
  • The biggest single-benchmark swing is GPQA Diamond: 95.6% for Claude Sonnet 5.5 and 14.7% for Yi-34B.
  • Yi-34B has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5.5Yi-34B
ProviderAnthropic01.AI
Noometry Index61.927.8
Released2026-09-282023-11-02
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked3223

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Category by category

Coding Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 67.3 (#6), Yi-34B: 32.3 (#274)

BenchmarkClaude Sonnet 5.5Yi-34B
LMArena Coding15131112
FrontierCode52.1%—
CursorBench55.5%—
LMArena WebDev1774—
FrontierSWE61.9%—
SciCode61%—
ALE-Bench1,819—

Agentic & Tool Use Not comparable

Claude Sonnet 5.5: 45.0 (#16), Yi-34B: —

BenchmarkClaude Sonnet 5.5Yi-34B
APEX-Agents75.5%—

Reasoning Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 54.0 (#28), Yi-34B: 21.2 (#226)

BenchmarkClaude Sonnet 5.5Yi-34B
LMArena Hard Prompts14951104
Epoch Capabilities Index165.03117.39
NYT Connections (extended)80.5%—
CritPt31.4%—
Mystery Game Puzzles65%—
BIG-Bench Hard—71.7%

Math Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 87.9 (#6), Yi-34B: 21.6 (#282)

BenchmarkClaude Sonnet 5.5Yi-34B
LMArena Math15101114
FrontierMath (Tiers 1-3)88.8%—
FrontierMath Tier 480.5%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
MATH Level 5—5.1%
FrontierMath Erdős2.9%—
GSM8K—76%

Knowledge Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#12), Yi-34B: 7.5 (#309)

BenchmarkClaude Sonnet 5.5Yi-34B
GPQA Diamond95.6%14.7%
LMArena Expert15401061
SimpleQA Verified46.5%—
MMLU—76.3%

Multimodal Not comparable

Claude Sonnet 5.5: 51.5 (#6), Yi-34B: —

BenchmarkClaude Sonnet 5.5Yi-34B
LMArena Vision1289—
Furniture Assembly75%—

Multilingual Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 55.3 (#30), Yi-34B: 29.7 (#264)

BenchmarkClaude Sonnet 5.5Yi-34B
LMArena Non-English14521079
LMArena Chinese15221176
LMArena Russian14511050
LMArena French—1081
LMArena German—1042
LMArena Japanese—993
LMArena Korean—959
LMArena Spanish—1070

Instruction Following Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 78.3 (#11), Yi-34B: 56.2 (#274)

BenchmarkClaude Sonnet 5.5Yi-34B
LMArena Instruction Following14951091

Long Context Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 45.9 (#28), Yi-34B: 33.2 (#264)

BenchmarkClaude Sonnet 5.5Yi-34B
LMArena Longer Query14981094

Writing & Preference Claude Sonnet 5.5 leads

Claude Sonnet 5.5: 66.0 (#40), Yi-34B: 34.1 (#273)

BenchmarkClaude Sonnet 5.5Yi-34B
LMArena Text14711129
LMArena Creative Writing14651108
LMArena Multi-Turn14741113

Frequently asked questions

Is Claude Sonnet 5.5 better than Yi-34B?

Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 27.8 on the Noometry Index.

Is Claude Sonnet 5.5 or Yi-34B better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 32.3 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5.5 and Yi-34B share?

14 benchmarks have published results for both models. Claude Sonnet 5.5 has 32 scored results on Noometry and Yi-34B has 23.

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