Nano Banana Pro API
About
Build advanced reasoning agents with Nano Banana Pro, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $2.00/1M input and $120.00/1M output tokens. Access Nano Banana Pro via the Vertex API with up to 33K output tokens.
Capabilities
Input Modalities
textimage
Output Modalities
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Reasoning
Yes
Structured Output
No
Tool Use
No
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
66K
Tokens
Input Limit
66K
Tokens
Max Output
33K
Tokens
Pricing
Standard (per 1M tokens)
Input
$2.00
Output
$120.00
Caching (per 1M tokens)
Read
$0.20
Frequently Asked Questions
Nano Banana Pro by Vertex costs $2.00 per 1M input tokens and $120.00 per 1M output tokens. Cached reads cost $0.20 per 1M tokens.
Model Details
ID
gemini-3-pro-image
Provider
VertexFamily
gemini-pro
Release Date
May 28, 2026
Knowledge Cutoff
Jan 1, 2025
API Integration
NPM Package
@ai-sdk/google-vertex
Environment Variables
GOOGLE_VERTEX_PROJECT
GOOGLE_VERTEX_LOCATION
GOOGLE_APPLICATION_CREDENTIALS