Noometry

Model comparison

Claude 3 Sonnet vs Qwen3.5-Flash

Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 29.0 on the Noometry Index.

Last verified . 21 shared benchmarks.

Claude 3 Sonnet Anthropic

29.0

Rank #319 Confirmed

Qwen3.5-Flash Alibaba (Qwen)

42.5

Rank #112 Confirmed

Summary

  • They share 21 benchmarks with published results for both. Claude 3 Sonnet 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 10.7.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 2.5% for Claude 3 Sonnet and 84.4% for Qwen3.5-Flash.

Side by side

Claude 3 SonnetQwen3.5-Flash
ProviderAnthropicAlibaba (Qwen)
Noometry Index29.042.5
Released2024-02-292026-02-23
WeightsProprietaryProprietary
Context window—1M
Max output—66K
Input $ / M tokens—$0.10
Output $ / M tokens—$0.40
Results tracked3032

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Category by category

Coding Qwen3.5-Flash leads

Claude 3 Sonnet: 29.6 (#302), Qwen3.5-Flash: 34.2 (#242)

BenchmarkClaude 3 SonnetQwen3.5-Flash
LMArena Coding12231412
LMArena WebDev—1244
WeirdML10.2%—
BigCodeBench Instruct42.7%—
BigCodeBench Complete53.8%—
ALE-Bench—221.8
HumanEval+64%—
MBPP+69.3%—

Agentic & Tool Use Not comparable

Claude 3 Sonnet: —, Qwen3.5-Flash: —

BenchmarkClaude 3 SonnetQwen3.5-Flash
Vending-Bench 2—462.69

Reasoning Qwen3.5-Flash leads

Claude 3 Sonnet: 20.5 (#237), Qwen3.5-Flash: 33.7 (#72)

BenchmarkClaude 3 SonnetQwen3.5-Flash
LMArena Hard Prompts11971403
DTBench53.6%82.9%
Epoch Capabilities Index120.7143.98
Chess Puzzles—21%
Mystery Game Puzzles—20%
LMCA—29.1%
WinoGrande75.1%—

Math Qwen3.5-Flash leads

Claude 3 Sonnet: 10.7 (#310), Qwen3.5-Flash: 37.4 (#158)

BenchmarkClaude 3 SonnetQwen3.5-Flash
OTIS Mock AIME 2024-20252.5%84.4%
LMArena Math12131407
FrontierMath (Tiers 1-3)—18.2%
MATH Level 518.2%—
FrontierMath (Feb 2025 set)—6.2%
FrontierMath Tier 4 (v1)—0%

Knowledge Qwen3.5-Flash leads

Claude 3 Sonnet: 21.1 (#276), Qwen3.5-Flash: 43.2 (#93)

BenchmarkClaude 3 SonnetQwen3.5-Flash
GPQA Diamond40.6%82.3%
LMArena Expert11731407
SimpleQA Verified—20.3%
Vectara Hallucination Rate—10.5%
MMLU75.9%—

Multimodal Not comparable

Claude 3 Sonnet: 25.2 (#125), Qwen3.5-Flash: —

BenchmarkClaude 3 SonnetQwen3.5-Flash
LMArena Vision984—

Multilingual Qwen3.5-Flash leads

Claude 3 Sonnet: 37.8 (#234), Qwen3.5-Flash: 50.5 (#121)

BenchmarkClaude 3 SonnetQwen3.5-Flash
LMArena Non-English12051385
LMArena Chinese11891446
LMArena French12291412
LMArena German12041390
LMArena Japanese11311368
LMArena Korean11281344
LMArena Russian12271379
LMArena Spanish12041400

Instruction Following Qwen3.5-Flash leads

Claude 3 Sonnet: 62.8 (#235), Qwen3.5-Flash: 72.6 (#139)

BenchmarkClaude 3 SonnetQwen3.5-Flash
LMArena Instruction Following11991374

Long Context Qwen3.5-Flash leads

Claude 3 Sonnet: 36.7 (#228), Qwen3.5-Flash: 42.4 (#124)

BenchmarkClaude 3 SonnetQwen3.5-Flash
LMArena Longer Query12111392

Writing & Preference Qwen3.5-Flash leads

Claude 3 Sonnet: 42.1 (#238), Qwen3.5-Flash: 57.9 (#122)

BenchmarkClaude 3 SonnetQwen3.5-Flash
LMArena Text12181397
LMArena Creative Writing11861343
LMArena Multi-Turn12271393

Frequently asked questions

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

Qwen3.5-Flash is the stronger model overall, scoring 42.5 to 29.0 on the Noometry Index.

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

Qwen3.5-Flash scores higher on coding benchmarks: 34.2 versus 29.6 in the Noometry coding category.

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

21 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Qwen3.5-Flash has 32.

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