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OpenAI: GPT-5.6 Sol (batch) vs Google: Gemini 3.5 Flash

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

OpenAI: GPT-5.6 Sol (batch) Google: Gemini 3.5 Flash
Vendoropenaigoogle
Quality Score100100
Benchmark Score99.384.3
Input Price$2.50/M$1.50/M
Output Price$15.00/M$9.00/M
Context Window1,050,0001,048,576
Max Output128,00065,536
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio-✓
Benchmark Scores
ai_index100.085.7
ai_index_agentic95.365.5
ai_index_coding100.0100.0

Who wins by task?

TaskOpenAI: GPT-5.6 Sol (batch)Google: Gemini 3.5 Flash
SQL Generation 174 169
Code Review 171 165
Code Completion 118 119
Code Refactoring 167 163
Bug Fixing 187 178
Unit Test Generation 157 153
Code Documentation 142 141
Regex Writing 136 134
CI/CD Pipelines 147 143
Frontend Component Design 149 145
Data Analysis 177 168
CSV / Spreadsheet Cleanup 154 153
ETL Scripting 157 153
JSON Extraction 138 138
Bulk Data Labeling 122 124
OCR / Document Parsing 147 146
Table Extraction from PDFs 147 146
Long-Document Summarization 162 158
Short-Form Summarization 122 122
Blog Post Writing 142 139

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

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