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OpenAI: GPT-5.6 Luna Pro (batch) vs OpenAI: GPT-5.6 Terra

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

OpenAI: GPT-5.6 Luna Pro (batch) OpenAI: GPT-5.6 Terra
Vendoropenaiopenai
Quality Score100100
Benchmark Score-71.1
Input Price$0.10/M$2.00/M
Output Price$0.60/M$12.00/M
Context Window1,050,0001,050,000
Max Output128,000128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index-69.4

Who wins by task?

TaskOpenAI: GPT-5.6 Luna Pro (batch)OpenAI: GPT-5.6 Terra
SQL Generation 133 140
Code Review 132 145
Code Completion 131 118
Code Refactoring 136 147
Bug Fixing 136 149
Unit Test Generation 124 132
Code Documentation 131 135
Regex Writing 119 124
CI/CD Pipelines 120 128
Frontend Component Design 122 130
Data Analysis 124 134
CSV / Spreadsheet Cleanup 133 135
ETL Scripting 128 137
JSON Extraction 131 121
Bulk Data Labeling 129 117
OCR / Document Parsing 131 134
Table Extraction from PDFs 131 134
Long-Document Summarization 137 147
Short-Form Summarization 123 116
Blog Post Writing 121 128

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

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