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Google: Gemini 3.1 Pro Preview vs Google: Gemini 3 Flash Preview

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-04-30.

Google: Gemini 3.1 Pro Preview Google: Gemini 3 Flash Preview
Vendorgooglegoogle
Quality Score100100
Input Price$2.00/M$0.50/M
Output Price$12.00/M$3.00/M
Context Window1,048,5761,048,576
Max Output65,53665,536
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio✓✓

Who wins by task?

TaskGoogle: Gemini 3.1 Pro PreviewGoogle: Gemini 3 Flash Preview
SQL Generation 132 133
Code Completion 117 131
Code Documentation 129 131
Regex Writing 117 119
CSV / Spreadsheet Cleanup 132 133
JSON Extraction 121 131
Bulk Data Labeling 117 128
Long-Document Summarization 136 137
Short-Form Summarization 113 123
Blog Post Writing 120 121

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

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