head-to-head
StepFun: Step 3.7 Flash vs xAI: Grok 4.20
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-23.
| StepFun: Step 3.7 Flash | xAI: Grok 4.20 | |
|---|---|---|
| Vendor | stepfun | x-ai |
| Quality Score | 100 | 100 |
| Benchmark Score | 48.0 | 61.5 |
| Input Price | $0.20/M | $1.25/M |
| Output Price | $1.15/M | $2.50/M |
| Context Window | 256,000 | 2,000,000 |
| Max Output | 256,000 | - |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 49.1 | 61.0 |
| ai_index_agentic | 35.5 | - |
| ai_index_coding | 61.6 | - |
| eqbench | - | 55.8 |
Who wins by task?
| Task | StepFun: Step 3.7 Flash | xAI: Grok 4.20 |
|---|---|---|
| SQL Generation | 152 | 144 |
| Code Review | 145 | 150 |
| Code Completion | 129 | 122 |
| Code Refactoring | 143 | 153 |
| Bug Fixing | 154 | 154 |
| Unit Test Generation | 138 | 135 |
| Code Documentation | 132 | 141 |
| Regex Writing | 129 | 127 |
| CI/CD Pipelines | 131 | 131 |
| Frontend Component Design | 135 | 131 |
| Data Analysis | 149 | 136 |
| CSV / Spreadsheet Cleanup | 140 | 139 |
| ETL Scripting | 137 | 142 |
| JSON Extraction | 142 | 123 |
| Bulk Data Labeling | 133 | 120 |
| OCR / Document Parsing | 137 | 135 |
| Table Extraction from PDFs | 137 | 135 |
| Long-Document Summarization | 141 | 154 |
| Short-Form Summarization | 128 | 119 |
| Blog Post Writing | 129 | 132 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →
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