Noometry

Model comparison

Claude Opus 5.5 vs Yi-34B

Claude Opus 5.5 is the stronger model overall, scoring 68.5 to 27.4 on the Noometry Index.

Last verified . 12 shared benchmarks.

Claude Opus 5.5 Anthropic

68.5

Rank #3 Confirmed

Yi-34B 01.AI

27.4

Rank #325 Confirmed

Summary

  • They share 12 benchmarks with published results for both. Claude Opus 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 Opus 5.5 leads 92.4 to 19.8.
  • The biggest single-benchmark swing is GPQA Diamond: 90.6% for Claude Opus 5.5 and 14.7% for Yi-34B.
  • Yi-34B has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5Yi-34B
ProviderAnthropic01.AI
Noometry Index68.527.4
Released2026-09-222023-11-02
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked3523

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Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.4 (#1), Yi-34B: 31.8 (#269)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Coding15451112
FrontierCode54.4%—
CursorBench57.8%—
LMArena WebDev1820—
FrontierSWE62.3%—
SciCode66.9%—
MirrorCode77.4%—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#13), Yi-34B: —

BenchmarkClaude Opus 5.5Yi-34B
APEX-Agents73.5%—
GDP.pdf30.6%—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 79.5 (#2), Yi-34B: 20.3 (#222)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Hard Prompts15451104
ARC-AGI-292.5%—
NYT Connections (extended)88.5%—
ARC-AGI-197.5%—
CritPt31.7%—
EBR-Bench71.4%—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—
BIG-Bench Hard—71.7%
Epoch Capabilities Index—117.28

Math Claude Opus 5.5 leads

Claude Opus 5.5: 92.4 (#2), Yi-34B: 19.8 (#277)

BenchmarkClaude Opus 5.5Yi-34B
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
LMArena Math—1114
MATH Level 5—5.1%
GSM8K—76%

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.6 (#9), Yi-34B: 7.5 (#304)

BenchmarkClaude Opus 5.5Yi-34B
GPQA Diamond90.6%14.7%
LMArena Expert15641061
SimpleQA Verified72.2%—
MMLU—76.3%

Multimodal Not comparable

Claude Opus 5.5: 56.5 (#2), Yi-34B: —

BenchmarkClaude Opus 5.5Yi-34B
Furniture Assembly83.3%—

Multilingual Claude Opus 5.5 leads

Claude Opus 5.5: 59.8 (#1), Yi-34B: 29.9 (#259)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Non-English15131079
LMArena Chinese15721175
LMArena Russian15321050
LMArena French—1080
LMArena German—1042
LMArena Japanese—993
LMArena Korean—959
LMArena Spanish—1070

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.1 (#2), Yi-34B: 56.4 (#269)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Instruction Following15351091

Long Context Claude Opus 5.5 leads

Claude Opus 5.5: 47.3 (#18), Yi-34B: 33.2 (#259)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Longer Query15401094

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.7 (#3), Yi-34B: 34.3 (#268)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Text15181129
LMArena Creative Writing15381108
LMArena Multi-Turn15201113
EQ-Bench Creative Writing2050—

Frequently asked questions

Is Claude Opus 5.5 better than Yi-34B?

Claude Opus 5.5 is the stronger model overall, scoring 68.5 to 27.4 on the Noometry Index.

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

Claude Opus 5.5 scores higher on coding benchmarks: 71.4 versus 31.8 in the Noometry coding category.

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

12 benchmarks have published results for both models. Claude Opus 5.5 has 35 scored results on Noometry and Yi-34B has 23.

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