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Google Gemini Pro Latest vs Google: Gemini 3.1 Pro Preview Custom Tools

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-04-29.

	Google Gemini Pro Latest	Google: Gemini 3.1 Pro Preview Custom Tools
Vendor	~google	google
Quality Score	100	100
Input Price	$2.00/M	$2.00/M
Output Price	$12.00/M	$12.00/M
Context Window	1,048,576	1,048,576
Max Output	65,536	65,536
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	✓	✓

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