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Google: Gemini 3.6 Flash vs OpenAI: GPT-5.6 Sol

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-18.

Google: Gemini 3.6 Flash OpenAI: GPT-5.6 Sol
Vendorgoogleopenai
Quality Score100100
Benchmark Score84.499.3
Input Price$0.75/M$2.50/M
Output Price$3.75/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_index85.1100.0
ai_index_agentic66.895.3
ai_index_coding100.0100.0

Who wins by task?

TaskGoogle: Gemini 3.6 FlashOpenAI: GPT-5.6 Sol
SQL Generation 170 174
Code Review 165 171
Code Completion 132 118
Code Refactoring 163 167
Bug Fixing 178 187
Unit Test Generation 153 157
Code Documentation 142 142
Regex Writing 135 136
CI/CD Pipelines 143 147
Frontend Component Design 145 149
Data Analysis 168 177
CSV / Spreadsheet Cleanup 154 154
ETL Scripting 153 157
JSON Extraction 148 138
Bulk Data Labeling 134 122
OCR / Document Parsing 146 147
Table Extraction from PDFs 146 147
Long-Document Summarization 159 162
Short-Form Summarization 131 122
Blog Post Writing 139 142

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

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