head-to-head
SpaceXAI: Grok 4.5 vs SpaceXAI: Grok 4.20
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.
| SpaceXAI: Grok 4.5 | SpaceXAI: Grok 4.20 | |
|---|---|---|
| Vendor | x-ai | x-ai |
| Quality Score | 100 | 100 |
| Benchmark Score | 65.0 | 50.6 |
| Input Price | $2.00/M | $1.25/M |
| Output Price | $6.00/M | $2.50/M |
| Context Window | 500,000 | 2,000,000 |
| Max Output | 450,000 | 1,800,000 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
| Benchmark Scores | ||
| ai_index | 64.0 | 42.3 |
| eqbench | - | 55.8 |
Who wins by task?
| Task | SpaceXAI: Grok 4.5 | SpaceXAI: Grok 4.20 |
|---|---|---|
| SQL Generation | 140 | 142 |
| Code Review | 144 | 146 |
| Code Completion | 119 | 121 |
| Code Refactoring | 146 | 150 |
| Bug Fixing | 148 | 150 |
| Unit Test Generation | 131 | 133 |
| Code Documentation | 136 | 139 |
| Regex Writing | 124 | 125 |
| CI/CD Pipelines | 127 | 129 |
| Frontend Component Design | 129 | 129 |
| Data Analysis | 133 | 133 |
| CSV / Spreadsheet Cleanup | 135 | 138 |
| ETL Scripting | 137 | 139 |
| JSON Extraction | 122 | 123 |
| Bulk Data Labeling | 119 | 120 |
| OCR / Document Parsing | 134 | 134 |
| Table Extraction from PDFs | 134 | 134 |
| Long-Document Summarization | 147 | 151 |
| Short-Form Summarization | 117 | 118 |
| Blog Post Writing | 128 | 130 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →
Related comparisons
Anthropic: Claude Haiku Latest vs SpaceXAI: Grok 4.20
Anthropic: Claude Opus 5 (batch) vs SpaceXAI: Grok 4.5
Anthropic: Claude Sonnet 5 vs SpaceXAI: Grok 4.20
Anthropic: Claude Sonnet Latest vs SpaceXAI: Grok 4.20
ByteDance Seed: Seed-2.0-Code vs SpaceXAI: Grok 4.5
ByteDance Seed: Seed 2.1 Turbo vs SpaceXAI: Grok 4.5
DeepSeek: DeepSeek V4 Flash Vision Exp vs SpaceXAI: Grok 4.5
Google: Gemini 3.1 Flash Lite vs SpaceXAI: Grok 4.20