head-to-head

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

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

Who wins by task?

Task	OpenAI: GPT-5.6 Luna Pro (batch)	Anthropic: Claude Sonnet 5
SQL Generation	133	140
Code Review	132	144
Code Completion	131	118
Code Refactoring	136	146
Bug Fixing	136	148
Unit Test Generation	124	131
Code Documentation	131	135
Regex Writing	119	123
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	121
Bulk Data Labeling	129	118
OCR / Document Parsing	131	134
Table Extraction from PDFs	131	134
Long-Document Summarization	137	146
Short-Form Summarization	123	116
Blog Post Writing	121	128

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