head-to-head

Google: Gemini 3.1 Pro Preview vs MoonshotAI: Kimi K2.5

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.

Google: Gemini 3.1 Pro Preview MoonshotAI: Kimi K2.5
Vendorgooglemoonshotai
Quality Score100100
Benchmark Score66.559.2
Input Price$2.00/M$0.45/M
Output Price$12.00/M$2.25/M
Context Window1,048,576262,144
Max Output65,536235,929
Tool Calling
Structured Output
Reasoning Mode
Vision
Audio-
Benchmark Scores
ai_index49.038.7
eqbench74.372.5

Who wins by task?

TaskGoogle: Gemini 3.1 Pro PreviewMoonshotAI: Kimi K2.5
SQL Generation 143 140
Code Review 150 142
Code Completion 120 131
Code Refactoring 153 143
Bug Fixing 154 146
Unit Test Generation 135 131
Code Documentation 139 135
Regex Writing 125 126
CI/CD Pipelines 131 127
Frontend Component Design 130 129
Data Analysis 135 134
CSV / Spreadsheet Cleanup 139 134
ETL Scripting 142 135
JSON Extraction 121 131
Bulk Data Labeling 117 129
OCR / Document Parsing 135 132
Table Extraction from PDFs 135 132
Long-Document Summarization 154 145
Short-Form Summarization 117 126
Blog Post Writing 131 128

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

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