Noometry

Model comparison

Claude Sonnet 4.5 vs Qwen3.5 35B-A3B

Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 42.0 on the Noometry Index. Qwen3.5 35B-A3B costs 8.7× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.

Last verified . 27 shared benchmarks.

Claude Sonnet 4.5 Anthropic

44.1

Rank #81 Confirmed

Qwen3.5 35B-A3B Alibaba (Qwen)

42.0

Rank #123 Confirmed

Summary

  • They share 27 benchmarks with published results for both. Claude Sonnet 4.5 scores higher in 7 categories and Qwen3.5 35B-A3B in 1 category; 7 gaps are clear of the uncertainty.
  • The widest gap is in coding, where Claude Sonnet 4.5 leads 47.3 to 33.8.
  • The biggest single-benchmark swing is SciCode: 44.7% for Claude Sonnet 4.5 and 29.3% for Qwen3.5 35B-A3B.
  • Qwen3.5 35B-A3B is cheaper at $0.25 / $2 per million input/output tokens, against $3 / $15 for Claude Sonnet 4.5.
  • Qwen3.5 35B-A3B accepts more context: 262K tokens versus 200K.
  • Qwen3.5 35B-A3B has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 4.5Qwen3.5 35B-A3B
ProviderAnthropicAlibaba (Qwen)
Noometry Index44.142.0
Released2025-09-292026-02-01
WeightsProprietaryOpen
Context window200K262K
Max output64K66K
Input $ / M tokens$3$0.25
Output $ / M tokens$15$2
Results tracked7328

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Category by category

Coding Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 47.3 (#61), Qwen3.5 35B-A3B: 33.8 (#251)

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
LMArena WebDev13931254
SciCode44.7%29.3%
LMArena Coding14891410
SWE-bench Verified71.3%—
SWE-bench Verified (bash only)71.4%—
SWE-bench Multilingual67%—
GSO14.7%—
WeirdML47.7%—
ALE-Bench796.15—
AlgoTune1.52—

Agentic & Tool Use Not comparable

Claude Sonnet 4.5: 38.3 (#32), Qwen3.5 35B-A3B: —

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
Terminal-Bench46.5%—
Berkeley Function Calling Leaderboard73.2%—
GDPval42.5%—
Remote Labor Index2.1%—
τ²-bench Airline72%—
τ²-bench Banking25.3%—
τ²-bench Retail72.4%—
τ²-bench Telecom84.9%—
Cybench60%—
DeepResearch Bench52.6%—
OSWorld62.9%—
LMArena Search1159—
METR Time Horizons67.4%—
Vending-Bench 23,839—

Reasoning Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 26.9 (#125), Qwen3.5 35B-A3B: 24.6 (#161)

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
CritPt1.1%0.6%
Chess Puzzles12%10%
LMArena Hard Prompts14621400
DTBench83.2%80%
LMCA38.8%29.5%
Epoch Capabilities Index146.84142.52
ARC-AGI-213.6%—
SimpleBench54.3%—
Kagi LLM Benchmark57.9%—
NYT Connections (extended)37.3%—
ARC-AGI-163.7%—
EnigmaEval6%—
EBR-Bench2.4%—
Mystery Game Puzzles17%—
ForecastBench61.9—

Math Qwen3.5 35B-A3B leads

Claude Sonnet 4.5: 32.3 (#216), Qwen3.5 35B-A3B: 39.9 (#97)

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
OTIS Mock AIME 2024-202577.8%70%
LMArena Math14491404
FrontierMath (Tiers 1-3)23.9%—
FrontierMath Tier 42.4%—
MathArena Final-Answer Competitions—56%
ProofBench19%—
Omni-MATH55.3%—
MATH Level 597.7%—
FrontierMath (Feb 2025 set)15.2%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Too close to call

Claude Sonnet 4.5: 48.4 (#76), Qwen3.5 35B-A3B: 47.8 (#79)

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
GPQA Diamond82.3%83.5%
Vectara Hallucination Rate12%10.5%
LMArena Expert14821408
Humanity's Last Exam13.7%—
SimpleQA Verified30.7%—
MMLU-Pro86.9%—
GPQA (HELM)68.6%—

Multimodal Not comparable

Claude Sonnet 4.5: 34.8 (#89), Qwen3.5 35B-A3B: —

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
VPCT39.8%—
LMArena Document1450—

Multilingual Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 53.4 (#69), Qwen3.5 35B-A3B: 50.0 (#127)

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
LMArena Non-English14251378
LMArena Chinese14591457
LMArena French14581412
LMArena German14271367
LMArena Japanese13901325
LMArena Korean14031356
LMArena Russian14371376
LMArena Spanish14571392

Instruction Following Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 75.0 (#78), Qwen3.5 35B-A3B: 72.8 (#128)

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
LMArena Instruction Following14591379
IFEval85%—

Long Context Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 45.2 (#46), Qwen3.5 35B-A3B: 42.4 (#127)

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
LMArena Longer Query14761389

Writing & Preference Claude Sonnet 4.5 leads

Claude Sonnet 4.5: 66.5 (#34), Qwen3.5 35B-A3B: 57.9 (#124)

BenchmarkClaude Sonnet 4.5Qwen3.5 35B-A3B
LMArena Text14391395
LMArena Creative Writing14421346
LMArena Multi-Turn14651390
EQ-Bench Creative Writing1678—
WildBench85.4%—

Frequently asked questions

Is Claude Sonnet 4.5 better than Qwen3.5 35B-A3B?

Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 42.0 on the Noometry Index. Qwen3.5 35B-A3B costs 8.7× less per token, which makes it the better buy when Claude Sonnet 4.5's lead doesn't matter for your workload.

Which is cheaper, Claude Sonnet 4.5 or Qwen3.5 35B-A3B?

Qwen3.5 35B-A3B is cheaper. It lists at $0.25 per million input tokens and $2 per million output tokens; Claude Sonnet 4.5 lists at $3 and $15.

Is Claude Sonnet 4.5 or Qwen3.5 35B-A3B better for coding?

Claude Sonnet 4.5 scores higher on coding benchmarks: 47.3 versus 33.8 in the Noometry coding category.

Which has the bigger context window?

Qwen3.5 35B-A3B does, with 262K tokens against 200K.

How many benchmarks do Claude Sonnet 4.5 and Qwen3.5 35B-A3B share?

27 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Qwen3.5 35B-A3B has 28.

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