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MoonshotAI: Kimi K3 vs xAI: Grok Latest

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-13.

MoonshotAI: Kimi K3 xAI: Grok Latest
Vendormoonshotai~x-ai
Quality Score100100
Benchmark Score96.910.6
Input Price$3.00/M$2.00/M
Output Price$15.00/M$6.00/M
Context Window1,048,576500,000
Max Output--
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index98.512.0
ai_index_agentic89.5-
ai_index_coding100.0-

Who wins by task?

TaskMoonshotAI: Kimi K3xAI: Grok Latest
SQL Generation 173 134
Code Review 170 134
Code Completion 118 118
Code Refactoring 167 137
Bug Fixing 185 138
Unit Test Generation 157 125
Code Documentation 141 131
Regex Writing 135 119
CI/CD Pipelines 147 121
Frontend Component Design 149 123
Data Analysis 175 125
CSV / Spreadsheet Cleanup 153 133
ETL Scripting 157 129
JSON Extraction 138 122
Bulk Data Labeling 122 119
OCR / Document Parsing 147 131
Table Extraction from PDFs 147 131
Long-Document Summarization 161 139
Short-Form Summarization 122 115
Blog Post Writing 141 122

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

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