head-to-head

OpenAI: GPT-5.6 Luna Pro vs Anthropic: Claude Sonnet 5 (batch)

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

	OpenAI: GPT-5.6 Luna Pro	Anthropic: Claude Sonnet 5 (batch)
Vendor	openai	anthropic
Quality Score	100	100
Benchmark Score	-	63.9
Input Price	$0.20/M	$1.00/M
Output Price	$1.20/M	$5.00/M
Context Window	1,050,000	1,000,000
Max Output	128,000	128,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	-	63.0

Who wins by task?

Task	OpenAI: GPT-5.6 Luna Pro	Anthropic: Claude Sonnet 5 (batch)
SQL Generation	133	141
Code Review	132	144
Code Completion	131	120
Code Refactoring	136	146
Bug Fixing	136	148
Unit Test Generation	124	131
Code Documentation	131	136
Regex Writing	119	125
CI/CD Pipelines	120	127
Frontend Component Design	122	129
Data Analysis	124	133
CSV / Spreadsheet Cleanup	133	135
ETL Scripting	128	136
JSON Extraction	131	122
Bulk Data Labeling	129	120
OCR / Document Parsing	131	134
Table Extraction from PDFs	131	134
Long-Document Summarization	137	147
Short-Form Summarization	123	118
Blog Post Writing	121	129

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