head-to-head
Google: Gemini 3.5 Flash vs xAI: Grok 4.20
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-07-15.
| Google: Gemini 3.5 Flash | xAI: Grok 4.20 | |
|---|---|---|
| Vendor | x-ai | |
| Quality Score | 100 | 100 |
| Benchmark Score | 84.2 | 61.5 |
| Input Price | $1.50/M | $1.25/M |
| Output Price | $9.00/M | $2.50/M |
| Context Window | 1,048,576 | 2,000,000 |
| Max Output | 65,536 | - |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | ✓ | - |
| Benchmark Scores | ||
| ai_index | 82.8 | 61.0 |
| ai_index_agentic | 61.8 | - |
| ai_index_coding | 100.0 | - |
| eqbench | - | 55.8 |
Who wins by task?
| Task | Google: Gemini 3.5 Flash | xAI: Grok 4.20 |
|---|---|---|
| SQL Generation | 168 | 144 |
| Code Review | 164 | 150 |
| Code Completion | 119 | 122 |
| Code Refactoring | 162 | 153 |
| Bug Fixing | 176 | 154 |
| Unit Test Generation | 152 | 135 |
| Regex Writing | 133 | 127 |
| CI/CD Pipelines | 143 | 131 |
| Frontend Component Design | 145 | 131 |
| Data Analysis | 167 | 136 |
| CSV / Spreadsheet Cleanup | 153 | 139 |
| ETL Scripting | 152 | 142 |
| JSON Extraction | 138 | 123 |
| Bulk Data Labeling | 124 | 120 |
| OCR / Document Parsing | 146 | 135 |
| Table Extraction from PDFs | 146 | 135 |
| Long-Document Summarization | 157 | 154 |
| Short-Form Summarization | 121 | 119 |
| Blog Post Writing | 138 | 132 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →
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