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OpenAI: GPT-5.6 Sol (batch) vs StepFun: Step 3.7 Flash

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-13.

OpenAI: GPT-5.6 Sol (batch) StepFun: Step 3.7 Flash
Vendoropenaistepfun
Quality Score100100
Benchmark Score99.350.1
Input Price$2.50/M$0.20/M
Output Price$15.00/M$1.15/M
Context Window1,050,000262,144
Max Output128,000256,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index100.051.0
ai_index_agentic95.335.9
ai_index_coding100.065.3

Who wins by task?

TaskOpenAI: GPT-5.6 Sol (batch)StepFun: Step 3.7 Flash
SQL Generation 174 153
Code Review 171 146
Code Completion 118 130
Code Refactoring 167 144
Bug Fixing 187 155
Unit Test Generation 157 139
Code Documentation 142 133
Regex Writing 136 129
CI/CD Pipelines 147 131
Frontend Component Design 149 136
Data Analysis 177 150
CSV / Spreadsheet Cleanup 154 141
ETL Scripting 157 138
JSON Extraction 138 142
Bulk Data Labeling 122 133
OCR / Document Parsing 147 138
Table Extraction from PDFs 147 138
Long-Document Summarization 162 142
Short-Form Summarization 122 128
Blog Post Writing 142 130

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

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