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OpenAI GPT Mini Latest vs Google: Gemma 4 31B (free)

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

OpenAI GPT Mini Latest Google: Gemma 4 31B (free)
Vendor~openaigoogle
Quality Score100100
Input Price$0.75/MFree
Output Price$4.50/MFree
Context Window400,000262,144
Max Output128,0008,192
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--

Who wins by task?

TaskOpenAI GPT Mini LatestGoogle: Gemma 4 31B (free)
SQL Generation 133 131
Code Review 132 126
Code Completion 130 129
Code Refactoring 136 127
Bug Fixing 136 130
Unit Test Generation 124 121
Code Documentation 130 126
Regex Writing 119 120
CI/CD Pipelines 120 117
CSV / Spreadsheet Cleanup 133 128
ETL Scripting 128 122
JSON Extraction 130 132
Bulk Data Labeling 128 130
OCR / Document Parsing 131 128
Table Extraction from PDFs 131 128
Long-Document Summarization 137 129
Short-Form Summarization 123 124
Blog Post Writing 121 119

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

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