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OpenAI: GPT-5.6 Luna (batch) vs MoonshotAI: Kimi K2.7 Code

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

OpenAI: GPT-5.6 Luna (batch) MoonshotAI: Kimi K2.7 Code
Vendoropenaimoonshotai
Quality Score100100
Benchmark Score62.340.9
Input Price$0.10/M$0.71/M
Output Price$0.60/M$3.30/M
Context Window1,050,000262,144
Max Output128,000235,929
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index61.642.6

Who wins by task?

TaskOpenAI: GPT-5.6 Luna (batch)MoonshotAI: Kimi K2.7 Code
SQL Generation 141 136
Code Review 143 134
Code Completion 133 129
Code Refactoring 145 134
Bug Fixing 147 138
Unit Test Generation 131 126
Code Documentation 137 129
Regex Writing 126 123
CI/CD Pipelines 127 122
Frontend Component Design 129 127
Data Analysis 133 130
CSV / Spreadsheet Cleanup 136 129
ETL Scripting 136 128
JSON Extraction 131 131
Bulk Data Labeling 129 128
OCR / Document Parsing 134 130
Table Extraction from PDFs 134 130
Long-Document Summarization 147 136
Short-Form Summarization 126 125
Blog Post Writing 129 124

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

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