Which is better, Claude Opus 4.5 or Qwen3.5 2B?

Claude Opus 4.5 vs Qwen3.5 2B

29 SHARED BENCHMARKS

Across 29 shared benchmarks, Claude Opus 4.5 scores higher on 29 and Qwen3.5 2B on 0. The widest gap is scicode, where Claude Opus 4.5 scores 50 against 7.2.

ANTHROPICVSALIBABA29 SHARED29–0 HEAD-TO-HEAD

BenchmarkClaude Opus 4.5MARGINQwen3.5 2B

AA Agentic Index59.60.8

AA Intelligence356.9

AA-LCR77.325.6

AA-Omniscience14-60.2

AIME 202592.819

Artificial Analysis Coding Index47.82.9

C-Eval92.273.2

critpt4.60

gdpval47.30

GPQA Diamond8751.6

HLE30.85

IFBench5841.3

longbench_v264.438.7

MathVista80.248.7

mmlu_redux95.679.6

MMLU-Pro9066.5

mmmlu90.863.1

MMMU-Pro7443

MMStar73.255.1

multichallenge5933.7

OCRBench86.586.1

OmniScience Accuracy46.68.1

OmniScience Non-Hallucination3925.8

RealWorldQA7765.1

scicode507.2

SimpleVQA69.735.2

supergpqa70.637.5

Terminal-Bench Hard473.8

τ²-Bench Telecom (AA run)89.581.6

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.

Compare Claude Opus 4.5 withALL PAIRINGS →

AnthropicClaude Opus 4.8 Claude Opus 4.6 Claude Sonnet 4.5 Claude 3.5 Sonnet Claude Fable 5 Claude Opus 5

Across the fieldQwen3.6 27B Qwen3.7 Max Qwen3.8 Max Preview Qwen3.7 Plus Preview Claude Opus 4 Qwen3.5 4B Gemini 3.6 Flash Nemotron 3 Super 120B A12B

Compare Qwen3.5 2B 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 fieldDeepSeek-V4-Pro DeepSeek-V3 Kimi K2.6 Kimi K2.5 o3 GPT-5.1 Claude Opus 5 Gemma 4 26B A4B