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Use this provider when you want Gemini through Vertex AI instead of the Gemini API from AI Studio.

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Setup

1

Choose Google Vertex in the app

Open Coreply and choose Google Vertex under API Provider.
2

Enter your Vertex settings

Fill in the following values:
3

Minimize thinking

Set Provider Options to:
Current Gemini 3.x models use thinkingLevel. minimal is the lowest setting. If you use an older Gemini 2.5 model instead, use {"vertex": {"thinkingConfig": {"thinkingBudget": 0}}}.