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xAI: Grok 4.3 vs OpenAI: GPT-5.4 Mini

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

xAI: Grok 4.3 OpenAI: GPT-5.4 Mini
Vendorx-aiopenai
Quality Score100100
Benchmark Score84.885.9
Input Price$1.25/M$0.75/M
Output Price$2.50/M$4.50/M
Context Window1,000,000400,000
Max Output-128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index87.880.7
ai_index_agentic100.097.1
ai_index_coding67.784.9

Who wins by task?

TaskxAI: Grok 4.3OpenAI: GPT-5.4 Mini
SQL Generation 169 171
Code Review 166 166
Code Completion 121 132
Code Refactoring 163 163
Bug Fixing 181 181
Unit Test Generation 152 153
Code Documentation 143 142
Regex Writing 136 136
CI/CD Pipelines 143 144
Frontend Component Design 145 146
Data Analysis 170 171
CSV / Spreadsheet Cleanup 150 152
ETL Scripting 153 153
JSON Extraction 136 146
Bulk Data Labeling 125 133
OCR / Document Parsing 144 145
Table Extraction from PDFs 144 145
Long-Document Summarization 160 159
Short-Form Summarization 124 131
Blog Post Writing 140 140

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

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