Noometry

Model comparison

Claude Opus 5.5 vs Yi-34B

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 27.8 on the Noometry Index.

Last verified . 16 shared benchmarks.

Claude Opus 5.5 Anthropic

68.6

Rank #3 Confirmed

Yi-34B 01.AI

27.8

Rank #329 Confirmed

Summary

  • They share 16 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 91.8 to 21.6.
  • 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 Index68.627.8
Released2026-09-222023-11-02
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked4423

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.9 (#3), Yi-34B: 32.3 (#274)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Coding15471112
FrontierCode54.6%—
CursorBench57.8%—
LMArena WebDev1813—
FrontierSWE62.3%—
SciCode66.9%—
MirrorCode77.4%—
ALE-Bench2,147—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#15), Yi-34B: —

BenchmarkClaude Opus 5.5Yi-34B
APEX-Agents73.5%—
GDP.pdf30.6%—
Vending-Bench 29,235—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 80.2 (#3), Yi-34B: 21.2 (#226)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Hard Prompts15351104
Epoch Capabilities Index167.33117.39
ARC-AGI-293.3%—
NYT Connections (extended)88.5%—
ARC-AGI-198.5%—
CritPt31.7%—
EBR-Bench71.4%—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—
BIG-Bench Hard—71.7%

Math Claude Opus 5.5 leads

Claude Opus 5.5: 91.8 (#3), Yi-34B: 21.6 (#282)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Math15061114
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
MATH Level 5—5.1%
FrontierMath Erdős2.9%—
GSM8K—76%

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.4 (#10), Yi-34B: 7.5 (#309)

BenchmarkClaude Opus 5.5Yi-34B
GPQA Diamond90.6%14.7%
LMArena Expert15471061
SimpleQA Verified72.2%—
MMLU—76.3%

Multimodal Not comparable

Claude Opus 5.5: 57.8 (#1), Yi-34B: —

BenchmarkClaude Opus 5.5Yi-34B
LMArena Vision1321—
Blueprint-Bench 251.2%—
Furniture Assembly83.3%—

Multilingual Claude Opus 5.5 leads

Claude Opus 5.5: 59.1 (#2), Yi-34B: 29.7 (#264)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Non-English15071079
LMArena Chinese15881176
LMArena French15141081
LMArena Russian15201050
LMArena Spanish15071070
LMArena German—1042
LMArena Japanese—993
LMArena Korean—959

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.0 (#3), Yi-34B: 56.2 (#274)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Instruction Following15371091

Long Context Claude Opus 5.5 leads

Claude Opus 5.5: 47.1 (#19), Yi-34B: 33.2 (#264)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Longer Query15321094

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.2 (#3), Yi-34B: 34.1 (#273)

BenchmarkClaude Opus 5.5Yi-34B
LMArena Text15151129
LMArena Creative Writing15331108
LMArena Multi-Turn14991113
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 68.6 to 27.8 on the Noometry Index.

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

Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 32.3 in the Noometry coding category.

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

16 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and Yi-34B has 23.

Related comparisons

Go deeper