head-to-head
StepFun: Step 3.7 Flash vs OpenAI: GPT-5.4
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-05-31.
| StepFun: Step 3.7 Flash | OpenAI: GPT-5.4 | |
|---|---|---|
| Vendor | stepfun | openai |
| Quality Score | 100 | 100 |
| Input Price | $0.20/M | $2.50/M |
| Output Price | $1.15/M | $15.00/M |
| Context Window | 256,000 | 1,050,000 |
| Max Output | 256,000 | 128,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
Who wins by task?
| Task | StepFun: Step 3.7 Flash | OpenAI: GPT-5.4 |
|---|---|---|
| SQL Generation | 131 | 132 |
| Code Review | 126 | 132 |
| Code Completion | 128 | 116 |
| Code Refactoring | 127 | 136 |
| Bug Fixing | 130 | 136 |
| Unit Test Generation | 121 | 124 |
| Code Documentation | 126 | 128 |
| Regex Writing | 119 | 116 |
| CI/CD Pipelines | 117 | 120 |
| CSV / Spreadsheet Cleanup | 128 | 132 |
| ETL Scripting | 122 | 128 |
| JSON Extraction | 131 | 120 |
| Bulk Data Labeling | 129 | 116 |
| OCR / Document Parsing | 128 | 131 |
| Table Extraction from PDFs | 128 | 131 |
| Long-Document Summarization | 129 | 136 |
| Short-Form Summarization | 123 | 112 |
| Blog Post Writing | 119 | 120 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →
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