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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?'
})

Providers

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Provider
Context
Latency
Throughput
Input
Output
Cache
Web Search
Per Query
Capabilities
ZDR
No Training
Release Date
Going away May 15, 2026
Google
Legal:Terms
Privacy
1M
3.3s
149tps
$2.00/M
$12.00/M
Read:
$0.2/M
Write:
$14.00/K
+ input costs
11/18/2025
Going away May 15, 2026
Google Vertex AI
Legal:Terms
Privacy
1M
7.2s
255tps
$2.00/M
$12.00/M
Read:
$0.2/M
Write:
$14.00/K
+ input costs
11/18/2025