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Google: Gemini 3.6 Flash vs OpenAI: GPT-5.6 Sol Pro (batch)

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-13.

Google: Gemini 3.6 Flash OpenAI: GPT-5.6 Sol Pro (batch)
Vendorgoogleopenai
Quality Score100100
Benchmark Score84.4-
Input Price$1.50/M$2.50/M
Output Price$7.50/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_index85.1-
ai_index_agentic66.8-
ai_index_coding100.0-

Who wins by task?

TaskGoogle: Gemini 3.6 FlashOpenAI: GPT-5.6 Sol Pro (batch)
SQL Generation 169 132
Code Review 165 132
Code Completion 119 116
Code Refactoring 163 136
Bug Fixing 178 136
Unit Test Generation 153 124
Code Documentation 141 128
Regex Writing 134 116
CI/CD Pipelines 143 120
Frontend Component Design 145 122
Data Analysis 168 124
CSV / Spreadsheet Cleanup 153 132
ETL Scripting 153 128
JSON Extraction 139 120
Bulk Data Labeling 125 116
OCR / Document Parsing 146 131
Table Extraction from PDFs 146 131
Long-Document Summarization 158 136
Short-Form Summarization 122 112
Blog Post Writing 139 120

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

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