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OpenAI: GPT-5.6 Terra Pro vs Google: Gemini 3.1 Flash Lite

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-07-11.

OpenAI: GPT-5.6 Terra Pro Google: Gemini 3.1 Flash Lite
Vendoropenaigoogle
Quality Score100100
Input Price$2.50/M$0.25/M
Output Price$15.00/M$1.50/M
Context Window1,050,0001,048,576
Max Output128,00065,536
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio-✓

Who wins by task?

TaskOpenAI: GPT-5.6 Terra ProGoogle: Gemini 3.1 Flash Lite
SQL Generation 132 133
Code Completion 116 131
Code Documentation 128 131
Regex Writing 116 119
CSV / Spreadsheet Cleanup 132 133
JSON Extraction 120 131
Bulk Data Labeling 116 129
Long-Document Summarization 136 137
Short-Form Summarization 112 123
Blog Post Writing 120 121

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

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