Noometry

Model comparison

Claude 3 Opus vs Qwen3.5-Flash

Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 29.5 on the Noometry Index.

Last verified . 24 shared benchmarks.

Claude 3 Opus Anthropic

29.5

Rank #310 Confirmed

Qwen3.5-Flash Alibaba (Qwen)

42.5

Rank #112 Confirmed

Summary

  • They share 24 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Qwen3.5-Flash in 8 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Qwen3.5-Flash leads 37.4 to 14.8.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.7% for Claude 3 Opus and 84.4% for Qwen3.5-Flash.

Side by side

Claude 3 OpusQwen3.5-Flash
ProviderAnthropicAlibaba (Qwen)
Noometry Index29.542.5
Released2024-02-292026-02-23
WeightsProprietaryProprietary
Context window—1M
Max output—66K
Input $ / M tokens—$0.10
Output $ / M tokens—$0.40
Results tracked4632

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Category by category

Coding Qwen3.5-Flash leads

Claude 3 Opus: 32.9 (#267), Qwen3.5-Flash: 34.2 (#242)

BenchmarkClaude 3 OpusQwen3.5-Flash
LMArena Coding12641412
LMArena WebDev—1244
WeirdML19.2%—
BigCodeBench Instruct45.5%—
LiveBench Coding38.6%—
BigCodeBench Complete57.4%—
ALE-Bench—221.8
HumanEval+77.4%—
MBPP+73.3%—

Agentic & Tool Use Not comparable

Claude 3 Opus: 24.6 (#116), Qwen3.5-Flash: —

BenchmarkClaude 3 OpusQwen3.5-Flash
Cybench10%—
METR Time Horizons29.5%—
Vending-Bench 2—462.69

Reasoning Qwen3.5-Flash leads

Claude 3 Opus: 14.6 (#324), Qwen3.5-Flash: 33.7 (#72)

BenchmarkClaude 3 OpusQwen3.5-Flash
Chess Puzzles5%21%
LMArena Hard Prompts12451403
DTBench61.6%82.9%
LMCA17%29.1%
Epoch Capabilities Index126.91143.98
SimpleBench23.5%—
EnigmaEval0.8%—
LiveBench Reasoning40.6%—
Mystery Game Puzzles—20%
LiveBench Data Analysis57.9%—
ForecastBench58.4—
LiveBench49.2%—
WinoGrande88.5%—

Math Qwen3.5-Flash leads

Claude 3 Opus: 14.8 (#299), Qwen3.5-Flash: 37.4 (#158)

BenchmarkClaude 3 OpusQwen3.5-Flash
OTIS Mock AIME 2024-20254.7%84.4%
LMArena Math12731407
FrontierMath (Tiers 1-3)—18.2%
LiveBench Math43.6%—
MATH Level 537.5%—
FrontierMath (Feb 2025 set)—6.2%
FrontierMath Tier 4 (v1)—0%

Knowledge Qwen3.5-Flash leads

Claude 3 Opus: 24.5 (#267), Qwen3.5-Flash: 43.2 (#93)

BenchmarkClaude 3 OpusQwen3.5-Flash
GPQA Diamond47.2%82.3%
SimpleQA Verified12.6%20.3%
LMArena Expert12231407
Confabulations22.7%—
Vectara Hallucination Rate—10.5%
MMLU84.6%—

Multimodal Not comparable

Claude 3 Opus: 27.1 (#116), Qwen3.5-Flash: —

BenchmarkClaude 3 OpusQwen3.5-Flash
LMArena Vision1023—

Multilingual Qwen3.5-Flash leads

Claude 3 Opus: 41.4 (#207), Qwen3.5-Flash: 50.5 (#121)

BenchmarkClaude 3 OpusQwen3.5-Flash
LMArena Non-English12581385
LMArena Chinese12481446
LMArena French12751412
LMArena German12581390
LMArena Japanese12041368
LMArena Korean11871344
LMArena Russian12801379
LMArena Spanish12461400

Instruction Following Qwen3.5-Flash leads

Claude 3 Opus: 64.1 (#228), Qwen3.5-Flash: 72.6 (#139)

BenchmarkClaude 3 OpusQwen3.5-Flash
LMArena Instruction Following12481374
LiveBench Instruction Following63.9%—

Long Context Qwen3.5-Flash leads

Claude 3 Opus: 38.2 (#202), Qwen3.5-Flash: 42.4 (#124)

BenchmarkClaude 3 OpusQwen3.5-Flash
LMArena Longer Query12591392

Writing & Preference Qwen3.5-Flash leads

Claude 3 Opus: 47.2 (#213), Qwen3.5-Flash: 57.9 (#122)

BenchmarkClaude 3 OpusQwen3.5-Flash
LMArena Text12621397
LMArena Creative Writing12351343
LMArena Multi-Turn12751393
LiveBench Language50.4%—

Frequently asked questions

Is Claude 3 Opus better than Qwen3.5-Flash?

Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 29.5 on the Noometry Index.

Is Claude 3 Opus or Qwen3.5-Flash better for coding?

Qwen3.5-Flash scores higher on coding benchmarks: 34.2 versus 32.9 in the Noometry coding category.

How many benchmarks do Claude 3 Opus and Qwen3.5-Flash share?

24 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Qwen3.5-Flash has 32.

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