ResponseContentPart

One element of the content array of a ResponseItem.

The concrete subtypes are distinguished on the wire by the type discriminator: InputTextPart and InputImagePart describe what is sent to the model, OutputTextPart and ReasoningTextPart what comes back. A part the SDK does not know is preserved as an UnknownResponseContentPart rather than failing the whole response.

Prefer the input { } DSL over instantiating parts directly:

client.createResponse {
    params { model = ChatModel.DEEPSEEK_FLASH }
    input {
        user {
            text("What is in this image?")
            image("https://example.com/cat.jpg", ImageDetail.LOW)
        }
    }
}

See also

Inheritors