head-to-head

SpaceXAI: Grok 4.3 vs OpenAI: GPT-5.4 Mini

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.

The verdict

For a sample job of 1 million input tokens and 250,000 output tokens, both cost $1.88 at current list prices.

Grok 4.3 reads up to 1,000,000 tokens at once, roughly 1,500 pages of text, against about 600 pages for GPT-5.4 Mini.

On our blended benchmark score GPT-5.4 Mini leads 70.8 to 58.6.

Across the 20 tasks where they differ, GPT-5.4 Mini on 20 (SQL Generation, Code Review, Code Completion and others).

Grok 4.3 was released in April 2026 and GPT-5.4 Mini in March 2026.

Pick Grok 4.3 if you need long documents; pick GPT-5.4 Mini if you need benchmark performance or the stronger all-round task scores.

Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.

Task	SpaceXAI: Grok 4.3	OpenAI: GPT-5.4 Mini
SQL Generation	158	164
Code Review	155	159
Code Completion	120	132
Code Refactoring	155	158
Bug Fixing	164	170
Unit Test Generation	144	148
Code Documentation	139	140
Regex Writing	130	132
CI/CD Pipelines	136	139
Frontend Component Design	138	141
Data Analysis	153	160
CSV / Spreadsheet Cleanup	147	151
ETL Scripting	145	149
JSON Extraction	134	146
Bulk Data Labeling	124	133
OCR / Document Parsing	141	144
Table Extraction from PDFs	141	144
Long-Document Summarization	152	154
Short-Form Summarization	120	129
Blog Post Writing	134	136

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