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MoonshotAI: Kimi K2.6 vs xAI: Grok 4.20

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-20.

MoonshotAI: Kimi K2.6 xAI: Grok 4.20
Vendormoonshotaix-ai
Quality Score100100
Benchmark Score77.461.5
Input Price$0.67/M$1.25/M
Output Price$3.50/M$2.50/M
Context Window262,1442,000,000
Max Output262,144-
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index70.761.0
ai_index_agentic49.9-
ai_index_coding92.4-
eqbench76.655.8

Who wins by task?

TaskMoonshotAI: Kimi K2.6xAI: Grok 4.20
SQL Generation 167 144
Code Review 164 150
Code Completion 132 122
Code Refactoring 160 153
Bug Fixing 174 154
Unit Test Generation 152 135
Code Documentation 141 141
Regex Writing 136 127
CI/CD Pipelines 142 131
Frontend Component Design 145 131
Data Analysis 165 136
CSV / Spreadsheet Cleanup 150 139
ETL Scripting 151 142
JSON Extraction 146 123
Bulk Data Labeling 133 120
OCR / Document Parsing 144 135
Table Extraction from PDFs 144 135
Long-Document Summarization 157 154
Short-Form Summarization 131 119
Blog Post Writing 139 132

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

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