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xAI: Grok 4.20 vs OpenAI: GPT-5.4

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-20.

xAI: Grok 4.20 OpenAI: GPT-5.4
Vendorx-aiopenai
Quality Score100100
Benchmark Score61.590.4
Input Price$1.25/M$2.50/M
Output Price$2.50/M$15.00/M
Context Window2,000,0001,050,000
Max Output-128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index61.084.8
ai_index_agentic-67.8
ai_index_coding-100.0
eqbench55.882.4

Who wins by task?

TaskxAI: Grok 4.20OpenAI: GPT-5.4
SQL Generation 144 174
Code Review 150 175
Code Completion 122 120
Code Refactoring 153 174
Bug Fixing 154 188
Unit Test Generation 135 159
Code Documentation 141 146
Regex Writing 127 136
CI/CD Pipelines 131 149
Frontend Component Design 131 149
Data Analysis 136 173
CSV / Spreadsheet Cleanup 139 157
ETL Scripting 142 161
JSON Extraction 123 137
Bulk Data Labeling 120 122
OCR / Document Parsing 135 149
Table Extraction from PDFs 135 149
Long-Document Summarization 154 168
Short-Form Summarization 119 122
Blog Post Writing 132 144

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

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