NanoBanana - Image Generation (Nano Banana)

A ComfyUI node in NanoBanana2/Image with 17 inputs and 1 output.

By IxMxAMAR·Created 5 months ago·Updated 2 months ago· 4

◄api_key►

◄modelgemini-3.1-flash-image-preview►

◄custom_model►

◄prompt►

◄aspect_ratio16:9►

◄image_size4K►

◄system_instruction►

◄thinking_levelNONE►

◄temperature1.00►

◄seed-1►

◄candidate_count1►

◄safety_settings_json►

CategoryNanoBanana2/Image

Inputs (17)

Name	Type	Default	Description
api_key	STRING		NanoBanana - API key. Leave blank to use GEMINI_API_KEY env var.
model	COMBO	gemini-3.1-flash-image-preview	NanoBanana - image model. For Imagen models, use the dedicated Imagen Image Generation node instead.
custom_model	STRING		Override with a custom model ID.
prompt	STRING		Image generation prompt. Use [Reference Image N] to refer to inputs.
aspect_ratio	COMBO	16:9	Output image aspect ratio.
image_size	COMBO	4K	Output image resolution.
system_instructionopt	STRING		System instruction for the image generation model.
thinking_levelopt	COMBO	NONE	How much the model should reason before generating.
temperatureopt	FLOAT	1.000–2	Controls randomness in generation.
seedopt	INT	-1-1–2147483647	Random seed for reproducibility (-1 = random).
candidate_countopt	INT	11–4	Number of image candidates to generate. All are returned as a batch — wire into Preview Image or save the lot.
ref_image_1opt	IMAGE		First reference image.
ref_image_2opt	IMAGE		Second reference image.
ref_image_3opt	IMAGE		Third reference image.
ref_image_4opt	IMAGE		Fourth reference image.
safety_settings_jsonopt	STRING		JSON safety settings from Safety Settings node.
networkopt	NB_NETWORK		Optional. Wire a NanoBanana - Network Route node here to route this request through that proxy (e.g. US egress).

Name	Type	Description
image	IMAGE	—