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MoonshotAI: Kimi K2.6 vs OpenAI: GPT-5.4 Mini

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-16.

MoonshotAI: Kimi K2.6 OpenAI: GPT-5.4 Mini
Vendormoonshotaiopenai
Quality Score100100
Benchmark Score88.985.9
Input Price$0.68/M$0.75/M
Output Price$3.41/M$4.50/M
Context Window262,144400,000
Max Output262,142128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index88.980.7
ai_index_agentic100.097.1
ai_index_coding77.784.9
eqbench76.6-

Who wins by task?

TaskMoonshotAI: Kimi K2.6OpenAI: GPT-5.4 Mini
SQL Generation 174 171
Code Review 171 166
Code Completion 132 132
Code Refactoring 165 163
Bug Fixing 186 181
Unit Test Generation 156 153
Code Documentation 144 142
Regex Writing 140 136
CI/CD Pipelines 147 144
Frontend Component Design 149 146
Data Analysis 177 171
CSV / Spreadsheet Cleanup 150 152
ETL Scripting 156 153
JSON Extraction 145 146
Bulk Data Labeling 133 133
OCR / Document Parsing 144 145
Table Extraction from PDFs 144 145
Long-Document Summarization 162 159
Short-Form Summarization 133 131
Blog Post Writing 144 140

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

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