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xAI: Grok 4.20 vs OpenAI: GPT-5.4 Mini

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-16.

xAI: Grok 4.20 OpenAI: GPT-5.4 Mini
Vendorx-aiopenai
Quality Score100100
Benchmark Score74.785.9
Input Price$1.25/M$0.75/M
Output Price$2.50/M$4.50/M
Context Window2,000,000400,000
Max Output-128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index81.480.7
ai_index_agentic88.997.1
ai_index_coding69.684.9
eqbench55.8-

Who wins by task?

TaskxAI: Grok 4.20OpenAI: GPT-5.4 Mini
SQL Generation 171 171
Code Review 170 166
Code Completion 122 132
Code Refactoring 168 163
Bug Fixing 185 181
Unit Test Generation 154 153
Code Documentation 147 142
Regex Writing 137 136
CI/CD Pipelines 146 144
Frontend Component Design 146 146
Data Analysis 170 171
CSV / Spreadsheet Cleanup 153 152
ETL Scripting 157 153
JSON Extraction 136 146
Bulk Data Labeling 125 133
Long-Document Summarization 166 159
Short-Form Summarization 124 131
Blog Post Writing 143 140

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

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