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StepFun: Step 3.7 Flash vs MoonshotAI Kimi Latest

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-05-31.

StepFun: Step 3.7 Flash MoonshotAI Kimi Latest
Vendorstepfun~moonshotai
Quality Score100100
Input Price$0.20/M$0.68/M
Output Price$1.15/M$3.42/M
Context Window256,000262,144
Max Output256,000262,144
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--

Who wins by task?

TaskStepFun: Step 3.7 FlashMoonshotAI Kimi Latest
SQL Generation 131 130
Code Review 126 126
Code Completion 128 128
Code Refactoring 127 127
Bug Fixing 130 130
Unit Test Generation 121 121
Code Documentation 126 125
Regex Writing 119 119
CI/CD Pipelines 117 117
ETL Scripting 122 122
JSON Extraction 131 131
Bulk Data Labeling 129 128
OCR / Document Parsing 128 128
Table Extraction from PDFs 128 128
Long-Document Summarization 129 129
Short-Form Summarization 123 123
Blog Post Writing 119 118

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

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