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OpenAI: GPT-6 Luna Pro (batch) vs Anthropic: Claude Opus 5.5 (batch)

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

OpenAI: GPT-6 Luna Pro (batch) Anthropic: Claude Opus 5.5 (batch)
Vendoropenaianthropic
Quality Score100100
Benchmark Score-100.0
Input Price$0.05/M$2.00/M
Output Price$0.25/M$10.00/M
Context Window1,050,0001,000,000
Max Output128,000128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index-95.1

Who wins by task?

TaskOpenAI: GPT-6 Luna Pro (batch)Anthropic: Claude Opus 5.5 (batch)
SQL Generation 134 144
Code Review 132 150
Code Completion 131 119
Code Refactoring 136 151
Bug Fixing 136 154
Unit Test Generation 124 135
Code Documentation 131 138
Regex Writing 119 127
CI/CD Pipelines 120 131
Frontend Component Design 122 133
Data Analysis 124 138
CSV / Spreadsheet Cleanup 134 136
ETL Scripting 128 141
JSON Extraction 131 121
Bulk Data Labeling 129 118
OCR / Document Parsing 131 135
Table Extraction from PDFs 131 135
Long-Document Summarization 138 152
Short-Form Summarization 123 118
Blog Post Writing 122 132

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

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