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Gemini 3 Pro Preview

Gemini 3 Pro Preview is the flagship reasoning model in the Gemini 3 generation for demanding agentic and analytical tasks, with improvements in multi-step function calling, complex image reasoning, long-document analysis, and instruction following over Gemini 2.5 Pro.

File InputTool UseReasoningVision (Image)Web Searchtiered-costImplicit Caching
index.ts
import { streamText } from 'ai'
const result = streamText({
model: 'google/gemini-3-pro-preview',
prompt: 'Why is the sky blue?'
})

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