head-to-head

Anthropic: Claude Sonnet Latest vs Qwen: Qwen3.5 Plus 2026-04-20

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

	Anthropic: Claude Sonnet Latest	Qwen: Qwen3.5 Plus 2026-04-20
Vendor	~anthropic	qwen
Quality Score	100	100
Input Price	$2.00/M	$0.30/M
Output Price	$10.00/M	$1.80/M
Context Window	1,000,000	1,000,000
Max Output	128,000	65,536
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-

Who wins by task?

Task	Anthropic: Claude Sonnet Latest	Qwen: Qwen3.5 Plus 2026-04-20
SQL Generation	132	133
Code Completion	117	131
Code Documentation	129	131
Regex Writing	117	119
CSV / Spreadsheet Cleanup	132	133
JSON Extraction	121	131
Bulk Data Labeling	118	129
Long-Document Summarization	136	137
Short-Form Summarization	113	123
Blog Post Writing	120	121

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