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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 2026-06-12.

Google: Gemini 3.5 Flash OpenAI: GPT-5.4
Vendorgoogleopenai
Quality Score100100
Benchmark Score88.396.4
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_index91.393.7
ai_index_agentic100.0100.0
ai_index_coding74.294.5
eqbench-82.4

Who wins by task?

TaskGoogle: Gemini 3.5 FlashOpenAI: GPT-5.4
SQL Generation 170 179
Code Review 167 180
Code Completion 119 120
Code Refactoring 164 177
Bug Fixing 183 196
Unit Test Generation 153 162
Code Documentation 142 148
Regex Writing 136 138
CI/CD Pipelines 144 152
Frontend Component Design 146 152
Data Analysis 172 181
CSV / Spreadsheet Cleanup 150 158
ETL Scripting 154 164
JSON Extraction 136 137
Bulk Data Labeling 123 122
OCR / Document Parsing 145 149
Table Extraction from PDFs 145 149
Long-Document Summarization 160 171
Short-Form Summarization 122 123
Blog Post Writing 140 147

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

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