Which is better, Claude Opus 4.6 or Qwen3.5 4B?

Claude Opus 4.6 vs Qwen3.5 4B

27 SHARED BENCHMARKS

Across 27 shared benchmarks, Claude Opus 4.6 scores higher on 24 and Qwen3.5 4B on 3. The widest gap is τ³-Bench, where Claude Opus 4.6 scores 72.4 against 8.2. Qwen3.5 4B is the cheaper of the two on tracked API pricing ($0.03 against $5.00 per million input tokens).

ANTHROPICVSALIBABA27 SHARED24–3 HEAD-TO-HEAD

BenchmarkClaude Opus 4.6MARGINQwen3.5 4B

AA Agentic Index67.636.3

AA Intelligence3820

AA-LCR7863

AA-Omniscience13.7-58.4

aime_202696.799

AIME25 no tools95.654.3

Artificial Analysis Coding Index48.122.6

critpt12.60

ERQA40.846.3

gdpval55.98.3

GPQA Diamond91.377.1

HLE53.19.9

hmmt_feb_202696.284.1

IFBench62.559.2

LiveCodeBench v688.855.8

MMLU-Pro89.179.1

mmmlu91.176.1

MMMU-Pro77.365.4

multichallenge5649

OmniScience Accuracy4715.1

OmniScience Non-Hallucination37.213.4

RealWorldQA73.976.3

scicode5218.3

Terminal-Bench Hard65.418.2

τ²-Bench (Retail)91.971.9

τ²-Bench Telecom (AA run)99.392.1

τ³-Bench72.48.2

Best tracked score per model per benchmark (default configuration; source-attributed). ↓ marks lower-is-better metrics. Open either model for its full surface, provenance and pricing. Quoted rates are the price-setter row we currently track for each model — its direct or vendor-official listing where one exists (anthropic-official, direct), otherwise the lowest tracked offer.

Compare Claude Opus 4.6 withALL PAIRINGS →

AnthropicClaude Opus 4.8 Claude Sonnet 4.5 Claude 3.5 Sonnet Claude Fable 5 Claude Opus 4.5 Claude Opus 5

Across the fieldGemini 3.6 Flash Nemotron 3 Super 120B A12B GPT-5.5 GPT-4o GPT-5.6 Sol Gemini 3.1 Pro GPT-5.4 GPT-5.2

Compare Qwen3.5 4B withALL PAIRINGS →

AlibabaQwen3.5 35B A3B Qwen3 VL 4B (Reasoning)Qwen3.5 397B A17B Qwen2.5 Instruct 72B Qwen3.5 27B Qwen3.6 Plus

Across the fieldClaude Sonnet 4.5 Claude 3.5 Sonnet Gemini 3 Pro Claude Fable 5 GPT-5 Claude Opus 4.5 DeepSeek-V4-Pro DeepSeek-V3