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Google: Gemini 3.1 Pro Preview Custom Tools
google/gemini-3.1-pro-preview-customtools
VisionTool useJSONReasoningStreaming
Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...
Pricing
Input
$2.00 / 1M
Output
$12.00 / 1M
Specs
Context
1,048,756 tokens
Input
text, audio, image, video, file
Output
text
Released: 2026-02
Supported parameters
include_reasoningmax_tokensreasoningresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_p