Nano Banana AI image models
Google ships these Gemini image models under one name. Banana Img runs 2.1 by default and Pro for complex scenes, with earlier versions as automatic backups.
DefaultNano Banana 2.1
Released October 6, 2026
Better realism, cleaner text and infographics, steadier characters across edits, and 1K or 2K output for 10 credits per 1K image (4K on paid plans).
High qualityNano Banana Pro
Gemini 3 Pro Image
The highest-detail Nano Banana Pro AI image generator, built for complex scenes and reasoning-heavy prompts. Pick it from the model menu for 34 credits per 1K image.
BackupNano Banana 2
Gemini 3.1 Flash Image
The Flash model before 2.1, with up to 4K output. Banana Img switches to it automatically if version 2.1 is unavailable, so your run still finishes.
BackupNano Banana
Gemini 2.5 Flash Image
The original model that started the series, known for fast conversational edits. It is the last backup for 1K images.