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

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-18.

MoonshotAI: Kimi K2.6 OpenAI: GPT-5.4
Vendormoonshotaiopenai
Quality Score100100
Benchmark Score84.094.2
Input Price$0.68/M$2.50/M
Output Price$3.41/M$15.00/M
Context Window262,1441,050,000
Max Output262,142128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index70.784.8
ai_index_agentic100.0100.0
ai_index_coding77.794.5
eqbench76.682.4

Who wins by task?

TaskMoonshotAI: Kimi K2.6OpenAI: GPT-5.4
SQL Generation 171 178
Code Review 167 178
Code Completion 132 120
Code Refactoring 163 175
Bug Fixing 183 194
Unit Test Generation 154 161
Code Documentation 142 147
Regex Writing 138 138
CI/CD Pipelines 145 151
Frontend Component Design 147 151
Data Analysis 174 179
CSV / Spreadsheet Cleanup 150 157
ETL Scripting 154 163
JSON Extraction 145 137
Bulk Data Labeling 133 122
OCR / Document Parsing 143 149
Table Extraction from PDFs 143 149
Long-Document Summarization 159 170
Short-Form Summarization 132 123
Blog Post Writing 141 146

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

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