ClaudeNode - ComfyUI Built-in Node Documentation

Overview

Generate text responses from an Anthropic Claude model. This node sends a text prompt and optional images to a Claude model and returns the generated text response.

Inputs

Parameter	Description	Data Type	Required	Range
`prompt`	Text input to the model. (default: empty string)	STRING	Yes	N/A
`model`	The Claude model used to generate the response.	COMBO	Yes	`"Opus 4.7"` `"Opus 4.6"` `"Sonnet 4.6"` `"Sonnet 4.5"` `"Haiku 4.5"`
`seed`	Seed controls whether the node should re-run; results are non-deterministic regardless of seed. (default: 0)	INT	Yes	0 to 2147483647
`images`	Optional image(s) to use as context for the model. Up to 20 images.	IMAGE	No	0 to 20 images
`system_prompt`	Foundational instructions that dictate the model’s behavior. (default: empty string)	STRING	No	N/A

Parameter Constraints

Image Limit: A maximum of 20 images can be provided per request.
Temperature Handling: When thinking is enabled or when using the “Opus 4.7” model, the temperature parameter is automatically unset (defaults to 1.0) as required by the Anthropic API. For other models, temperature can be set via the model configuration.
Thinking/Reasoning: The model configuration includes a reasoning_effort setting that controls whether thinking is enabled. When enabled, the node automatically configures the appropriate thinking mode (adaptive or budget-based) depending on the selected model.

Outputs

Output Name	Description	Data Type
`output`	The generated text response from the Claude model. Returns “Empty response from Claude model.” if no text is generated.	STRING

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​Overview

​Inputs

​Parameter Constraints

​Outputs

Overview

Inputs

Parameter Constraints

Outputs