Nano Banana model IDs - YingTu API Docs

Model IDs are case-sensitive and belong in the URL path. Do not substitute a marketing name or a retired preview ID in code.

Product name	Model ID	YingTu output tier	Current lifecycle note
Nano Banana	`gemini-2.5-flash-image`	Approximately 1K; omit `imageSize`	Still exposed by YingTu; Google lists earliest shutdown on 2026-10-02
Nano Banana 2 Lite	`gemini-3.1-flash-lite-image`	`1K` only	Stable; no shutdown announced in Google’s current table
Nano Banana 2	`gemini-3.1-flash-image`	`1K`, `2K`, `4K`	Stable; no shutdown announced in Google’s current table
Nano Banana Pro	`gemini-3-pro-image`	`1K`, `2K`, `4K`	Stable; no shutdown announced in Google’s current table

Do not use gemini-2.5-flash-image-preview or gemini-3-pro-image-preview for a current integration. Review Google’s current deprecation schedule before a production migration.

All four current IDs support the documented synchronous generation, asynchronous task, and reference-image editing flows. Exact parameter limits remain in each model’s Parameters page and the current OpenAPI. No fixed model-retirement notice period is currently promised. Material changes may be announced through email, the console, or the public site, but production systems should keep the model ID configurable and review this page plus the documentation changelog regularly.

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Last modified on September 3, 2026