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ByteDance Seed: Seed-2.0-Code vs StepFun: Step 3.7 Flash

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

ByteDance Seed: Seed-2.0-Code StepFun: Step 3.7 Flash
Vendorbytedance-seedstepfun
Quality Score100100
Benchmark Score-50.1
Input Price$0.50/M$0.20/M
Output Price$3.00/M$1.15/M
Context Window262,144262,144
Max Output131,072256,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index-51.0
ai_index_agentic-35.9
ai_index_coding-65.3

Who wins by task?

TaskByteDance Seed: Seed-2.0-CodeStepFun: Step 3.7 Flash
SQL Generation 130 153
Code Review 126 146
Code Completion 128 130
Code Refactoring 127 144
Bug Fixing 130 155
Unit Test Generation 121 139
Code Documentation 125 133
Regex Writing 119 129
CI/CD Pipelines 117 131
Frontend Component Design 122 136
Data Analysis 124 150
CSV / Spreadsheet Cleanup 128 141
ETL Scripting 122 138
JSON Extraction 131 142
Bulk Data Labeling 128 133
OCR / Document Parsing 128 138
Table Extraction from PDFs 128 138
Long-Document Summarization 129 142
Short-Form Summarization 123 128
Blog Post Writing 118 130

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

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