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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 2026-08-08.

OpenAI: GPT-5.6 Luna (batch) MoonshotAI: Kimi K2.7 Code
Vendoropenaimoonshotai
Quality Score100100
Benchmark Score88.273.5
Input Price$0.10/M$0.70/M
Output Price$0.60/M$3.50/M
Context Window1,050,000262,144
Max Output128,000262,144
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index86.371.0
ai_index_agentic77.450.0
ai_index_coding100.0100.0

Who wins by task?

TaskOpenAI: GPT-5.6 Luna (batch)MoonshotAI: Kimi K2.7 Code
SQL Generation 172 163
Code Review 167 156
Code Completion 133 129
Code Refactoring 164 151
Bug Fixing 180 166
Unit Test Generation 154 147
Code Documentation 143 135
Regex Writing 137 133
CI/CD Pipelines 144 138
Frontend Component Design 146 143
Data Analysis 171 162
CSV / Spreadsheet Cleanup 154 147
ETL Scripting 154 144
JSON Extraction 149 147
Bulk Data Labeling 135 134
OCR / Document Parsing 146 142
Table Extraction from PDFs 146 142
Long-Document Summarization 160 147
Short-Form Summarization 132 130
Blog Post Writing 140 134

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

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