head-to-head

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

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.

	Anthropic: Claude Sonnet Latest	Qwen: Qwen3.5-9B
Vendor	~anthropic	qwen
Quality Score	100	100
Benchmark Score	-	18.3
Input Price	$2.00/M	$0.10/M
Output Price	$10.00/M	$0.15/M
Context Window	1,000,000	262,144
Max Output	128,000	32,768
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	-	22.5

Who wins by task?

Task	Anthropic: Claude Sonnet Latest	Qwen: Qwen3.5-9B
SQL Generation	132	133
Code Review	132	130
Code Completion	117	129
Code Refactoring	136	131
Bug Fixing	136	134
Unit Test Generation	124	123
Code Documentation	129	128
Regex Writing	117	122
CI/CD Pipelines	120	119
Frontend Component Design	122	124
Data Analysis	124	127
CSV / Spreadsheet Cleanup	132	129
ETL Scripting	128	125
JSON Extraction	121	131
Bulk Data Labeling	118	129
OCR / Document Parsing	131	129
Table Extraction from PDFs	131	129
Long-Document Summarization	136	133
Short-Form Summarization	113	125
Blog Post Writing	120	121

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