Which is better, Claude Opus 4 or Qwen3.5 2B?

Claude Opus 4 vs Qwen3.5 2B

19 SHARED BENCHMARKS

Across 19 shared benchmarks, Claude Opus 4 scores higher on 18 and Qwen3.5 2B on 1. The widest gap is Terminal-Bench Hard, where Claude Opus 4 scores 31.1 against 3.8.

ANTHROPICVSALIBABA19 SHARED18–1 HEAD-TO-HEAD

BenchmarkClaude Opus 4MARGINQwen3.5 2B

AA Intelligence256.9

AA-LCR69.325.6

AIME 20247617

AIME 202575.519

Artificial Analysis Coding Index342.9

GPQA Diamond79.651.6

HLE12.35

IFBench53.741.3

ifeval87.478.6

longbench_v255.638.7

math_500_em98.281.5

mmlu_redux94.279.6

MMLU-Pro86.666.5

mmmlu88.863.1

multichallenge58.633.7

scicode40.97.2

supergpqa56.537.5

Terminal-Bench Hard31.13.8

τ²-Bench Telecom (AA run)73.481.6

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 withALL PAIRINGS →

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

Across the fieldQwen3.6 27B Qwen3.7 Max Qwen3.8 Max Preview Qwen3.7 Plus Preview Qwen3.5 4B Gemini 3.6 Flash Nemotron 3 Super 120B A12B GPT-5.5

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 fieldQwen3.5 4B Gemini 3.6 Flash Nemotron 3 Super 120B A12B GPT-5.5 Claude Opus 4.8 GPT-4o GPT-5.6 Sol Gemini 3.1 Pro