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StepFun: Step 3.7 Flash vs xAI: Grok Build 0.1

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-12.

StepFun: Step 3.7 Flash xAI: Grok Build 0.1
Vendorstepfunx-ai
Quality Score100100
Benchmark Score74.4-
Input Price$0.20/M$1.00/M
Output Price$1.15/M$2.00/M
Context Window256,000256,000
Max Output256,000-
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index70.3-
ai_index_agentic98.2-
ai_index_coding61.2-

Who wins by task?

TaskStepFun: Step 3.7 FlashxAI: Grok Build 0.1
SQL Generation 163 130
Code Review 156 126
Code Completion 130 116
Code Refactoring 151 127
Bug Fixing 171 130
Unit Test Generation 146 121
Code Documentation 136 125
Regex Writing 135 119
CI/CD Pipelines 137 117
Frontend Component Design 142 122
Data Analysis 166 124
CSV / Spreadsheet Cleanup 143 127
ETL Scripting 144 122
JSON Extraction 143 123
Bulk Data Labeling 133 121
OCR / Document Parsing 139 128
Table Extraction from PDFs 139 128
Long-Document Summarization 148 129
Short-Form Summarization 131 115
Blog Post Writing 135 118

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

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