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StepFun: Step 3.7 Flash vs SpaceXAI: Grok Build 0.1

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

StepFun: Step 3.7 Flash SpaceXAI: Grok Build 0.1
Vendorstepfunx-ai
Quality Score100100
Benchmark Score29.1-
Input Price$0.20/M$1.00/M
Output Price$1.15/M$2.00/M
Context Window262,144256,000
Max Output230,400230,400
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index32.1-

Who wins by task?

TaskStepFun: Step 3.7 FlashSpaceXAI: Grok Build 0.1
SQL Generation 135 130
Code Review 132 126
Code Completion 129 116
Code Refactoring 132 127
Bug Fixing 136 130
Unit Test Generation 125 121
Code Documentation 129 125
Regex Writing 122 119
CI/CD Pipelines 121 117
Frontend Component Design 125 122
Data Analysis 128 124
CSV / Spreadsheet Cleanup 129 127
ETL Scripting 127 122
JSON Extraction 131 123
Bulk Data Labeling 129 121
OCR / Document Parsing 129 128
Table Extraction from PDFs 129 128
Long-Document Summarization 134 129
Short-Form Summarization 125 115
Blog Post Writing 123 118

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

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