Nano Banana 2 Lite (Gemini 3.1 Flash-Lite Image)

Google’s cost-efficient native image generation model for high-volume workloads.

Model ID

gemini-3.1-flash-lite-image

Pass this exact public ID in the top-level model field. Do not substitute an upstream provider alias.

Property	Value
Provider	`google-agent-platform`
Modality	`image`
Processing	`Synchronous response`
Endpoint	`/api/gengen/v1/images/generations`
Resolutions	`1K`
Aspect ratios	`1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9`
Output delivery	`Public HTTPS URL only`
URL retention	`24 hours`
Watermark control	`Not supported`

Generated images are returned as public HTTPS URLs only. Each URL is retained for 24 hours; copy the image to storage you control before it expires.

Availability and final customer prices can change. Check the Dashboard model catalog before production use.

See the API reference overview for authentication, request conventions, and response schemas.