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Anthropic: Claude Sonnet 5 vs Qwen: Qwen3.5-9B

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-07-01.

Anthropic: Claude Sonnet 5 Qwen: Qwen3.5-9B
Vendoranthropicqwen
Quality Score100100
Benchmark Score-42.2
Input Price$2.00/M$0.10/M
Output Price$10.00/M$0.15/M
Context Window1,000,000262,144
Max Output128,000262,144
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index-41.2
ai_index_coding-47.3

Who wins by task?

TaskAnthropic: Claude Sonnet 5Qwen: Qwen3.5-9B
SQL Generation 132 144
Code Review 132 139
Code Completion 117 130
Code Refactoring 136 138
Bug Fixing 136 144
Unit Test Generation 124 132
Code Documentation 129 131
Regex Writing 117 126
CI/CD Pipelines 120 126
Frontend Component Design 122 131
Data Analysis 124 138
CSV / Spreadsheet Cleanup 132 137
ETL Scripting 128 132
JSON Extraction 121 139
Bulk Data Labeling 118 132
OCR / Document Parsing 131 135
Table Extraction from PDFs 131 135
Long-Document Summarization 136 138
Short-Form Summarization 113 127
Blog Post Writing 120 126

Scores reflect capability match + benchmark data + pricing for each task. Methodology →

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