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OpenAI: GPT-5.4 Nano vs Google: Gemini 3.1 Pro Preview

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.

OpenAI: GPT-5.4 Nano Google: Gemini 3.1 Pro Preview
Vendoropenaigoogle
Quality Score100100
Benchmark Score31.566.5
Input Price$0.20/M$2.00/M
Output Price$1.25/M$12.00/M
Context Window400,0001,048,576
Max Output128,00065,536
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio-✓
Benchmark Scores
ai_index34.249.0
eqbench-74.3

Who wins by task?

TaskOpenAI: GPT-5.4 NanoGoogle: Gemini 3.1 Pro Preview
SQL Generation 138 143
Code Review 138 150
Code Completion 132 120
Code Refactoring 141 153
Bug Fixing 142 154
Unit Test Generation 128 135
Code Documentation 134 139
Regex Writing 123 125
CI/CD Pipelines 124 131
Frontend Component Design 126 130
Data Analysis 129 135
CSV / Spreadsheet Cleanup 135 139
ETL Scripting 132 142
JSON Extraction 131 121
Bulk Data Labeling 129 117
OCR / Document Parsing 132 135
Table Extraction from PDFs 132 135
Long-Document Summarization 143 154
Short-Form Summarization 125 117
Blog Post Writing 126 131

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

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