Nano Banana Pro Preview API
About
Build advanced reasoning agents with Nano Banana Pro Preview, 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 $12.00/1M output tokens. Access Nano Banana Pro Preview via the FastRouter API with up to 33K output tokens.
Capabilities
Input Modalities
textimage
Output Modalities
textimage
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
$12.00
Frequently Asked Questions
Nano Banana Pro Preview by FastRouter costs $2.00 per 1M input tokens and $12.00 per 1M output tokens.
Model Details
ID
google/gemini-3-pro-image-preview
Provider
FastRouterFamily
gemini-pro
Release Date
Nov 20, 2025
Knowledge Cutoff
Jan 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
FASTROUTER_API_KEY
API Base URL
https://go.fastrouter.ai/api/v1