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Google: Gemini 3.5 Flash vs OpenAI: GPT-5.4

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-22.

Google: Gemini 3.5 Flash OpenAI: GPT-5.4
Vendorgoogleopenai
Quality Score100100
Benchmark Score84.590.4
Input Price$1.50/M$2.50/M
Output Price$9.00/M$15.00/M
Context Window1,048,5761,050,000
Max Output65,536128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio✓-
Benchmark Scores
ai_index82.884.8
ai_index_agentic61.867.8
ai_index_coding100.0100.0
eqbench-82.4

Who wins by task?

TaskGoogle: Gemini 3.5 FlashOpenAI: GPT-5.4
SQL Generation 168 174
Code Review 164 175
Code Completion 119 120
Code Refactoring 162 174
Bug Fixing 176 188
Unit Test Generation 152 159
Code Documentation 141 146
Regex Writing 133 136
CI/CD Pipelines 143 149
Frontend Component Design 145 149
Data Analysis 167 173
CSV / Spreadsheet Cleanup 153 157
ETL Scripting 152 161
JSON Extraction 138 137
Bulk Data Labeling 124 122
OCR / Document Parsing 146 149
Table Extraction from PDFs 146 149
Long-Document Summarization 157 168
Short-Form Summarization 121 122
Blog Post Writing 138 144

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

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