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MoonshotAI: Kimi K3 vs OpenAI: GPT-5.6 Sol

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-18.

MoonshotAI: Kimi K3 OpenAI: GPT-5.6 Sol
Vendormoonshotaiopenai
Quality Score100100
Benchmark Score96.999.3
Input Price$3.00/M$2.50/M
Output Price$15.00/M$15.00/M
Context Window1,048,5761,050,000
Max Output-128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index98.5100.0
ai_index_agentic89.595.3
ai_index_coding100.0100.0

Who wins by task?

TaskMoonshotAI: Kimi K3OpenAI: GPT-5.6 Sol
SQL Generation 173 174
Code Review 170 171
Code Completion 118 118
Code Refactoring 167 167
Bug Fixing 185 187
Unit Test Generation 157 157
Code Documentation 141 142
Regex Writing 135 136
CI/CD Pipelines 147 147
Frontend Component Design 149 149
Data Analysis 175 177
CSV / Spreadsheet Cleanup 153 154
ETL Scripting 157 157
JSON Extraction 138 138
Bulk Data Labeling 122 122
OCR / Document Parsing 147 147
Table Extraction from PDFs 147 147
Long-Document Summarization 161 162
Short-Form Summarization 122 122
Blog Post Writing 141 142

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

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