Gemini 3.1 Flash Image (Preview) API
About
Integrate multimodal vision capabilities using Gemini 3.1 Flash Image (Preview), designed to process both text and images seamlessly. This model delivers cost-effective pricing at $0.25/1M input and $1.50/1M output tokens. Access Gemini 3.1 Flash Image (Preview) via the DevPass (LLM Gateway) API with up to 66K output tokens.
Capabilities
Input Modalities
textimage
Output Modalities
textimage
Limits
Context Window
66K
Tokens
Input Limit
66K
Tokens
Max Output
66K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.25
Output
$1.50
Frequently Asked Questions
Gemini 3.1 Flash Image (Preview) by DevPass (LLM Gateway) costs $0.25 per 1M input tokens and $1.50 per 1M output tokens.
Model Details
ID
gemini-3.1-flash-image-preview
Provider
DevPass (LLM Gateway)Family
gemini
Release Date
Feb 26, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
LLMGATEWAY_API_KEY
API Base URL
https://api.llmgateway.io/v1