GeminiImage - ComfyUI Built-in Node Documentation

Complete documentation for the GeminiImage node in ComfyUI. Learn its inputs, outputs, parameters and usage.

This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! Edit on GitHub

The GeminiImage node generates text and image responses from Google’s Gemini AI models. It allows you to provide multimodal inputs including text prompts, images, and files to create coherent text and image outputs. The node handles all API communication and response parsing with the latest Gemini models.

Inputs

Parameter	Data Type	Input Type	Default	Range	Description
prompt	STRING	required	""	-	Text prompt for generation
model	COMBO	required	gemini_2_5_flash_image_preview	Available Gemini models Options extracted from GeminiImageModel enum	The Gemini model to use for generating responses.
seed	INT	required	42	0 to 18446744073709551615	When seed is fixed to a specific value, the model makes a best effort to provide the same response for repeated requests. Deterministic output isn’t guaranteed. Also, changing the model or parameter settings, such as the temperature, can cause variations in the response even when you use the same seed value. By default, a random seed value is used.
images	IMAGE	optional	None	-	Optional image(s) to use as context for the model. To include multiple images, you can use the Batch Images node.
files	GEMINI_INPUT_FILES	optional	None	-	Optional file(s) to use as context for the model. Accepts inputs from the Gemini Generate Content Input Files node.

Note: The node includes hidden parameters (auth_token, comfy_api_key, unique_id) that are automatically handled by the system and do not require user input.

Outputs

Output Name	Data Type	Description
IMAGE	IMAGE	The generated image response from the Gemini model
STRING	STRING	The generated text response from the Gemini model