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Anthropic: Claude Sonnet 5 vs MoonshotAI: Kimi K2.6

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-07-01.

Anthropic: Claude Sonnet 5 MoonshotAI: Kimi K2.6
Vendoranthropicmoonshotai
Quality Score100100
Benchmark Score-77.7
Input Price$2.00/M$0.55/M
Output Price$10.00/M$3.20/M
Context Window1,000,000262,144
Max Output128,000262,144
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index-70.7
ai_index_agentic-49.9
ai_index_coding-92.4
eqbench-76.6

Who wins by task?

TaskAnthropic: Claude Sonnet 5MoonshotAI: Kimi K2.6
SQL Generation 132 167
Code Review 132 164
Code Completion 117 132
Code Refactoring 136 160
Bug Fixing 136 174
Unit Test Generation 124 152
Code Documentation 129 141
Regex Writing 117 136
CI/CD Pipelines 120 142
Frontend Component Design 122 145
Data Analysis 124 165
CSV / Spreadsheet Cleanup 132 150
ETL Scripting 128 151
JSON Extraction 121 146
Bulk Data Labeling 118 134
OCR / Document Parsing 131 144
Table Extraction from PDFs 131 144
Long-Document Summarization 136 157
Short-Form Summarization 113 131
Blog Post Writing 120 139

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

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