head-to-head

OpenAI: GPT-5.6 Luna Pro vs Anthropic Claude Sonnet Latest

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-07-11.

	OpenAI: GPT-5.6 Luna Pro	Anthropic Claude Sonnet Latest
Vendor	openai	~anthropic
Quality Score	100	100
Input Price	$1.00/M	$2.00/M
Output Price	$6.00/M	$10.00/M
Context Window	1,050,000	1,000,000
Max Output	128,000	128,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-

Who wins by task?

Task	OpenAI: GPT-5.6 Luna Pro	Anthropic Claude Sonnet Latest
SQL Generation	133	132
Code Completion	118	117
Code Documentation	130	129
Regex Writing	118	117
CSV / Spreadsheet Cleanup	133	132
JSON Extraction	122	121
Bulk Data Labeling	119	118
Long-Document Summarization	137	136
Short-Form Summarization	114	113
Blog Post Writing	121	120

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