(Swift) Referencing a Pre-Uploaded Image File by file_id in an AI Request

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Note: This example requires Chilkat v11.4.0 or greater.

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func chilkatTest() {
    var success: Bool = false

    success = false

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let ai = CkoAi()!

    // OpenAI is currently the only AI provider that supports referencing a pre-uploaded image by file_id
    // in a request for text generation.
    ai.provider = "openai"

    // Use your provider's API key.
    ai.apiKey = "MY_API_KEY"

    // Choose a model.
    ai.model = "gpt-5-mini"

    // See the following example showing how to upload a file
    // Upload an Image File to an AI Provider

    // Use the file_id of the pre-uploaded file.
    var file_id: String? = "file-5CnBeuFasqNcAfti3cx4Fe"
    ai.inputAddImageFileId(file_id, mime_type: "application/json")

    ai.inputAddText("What is in this image?")

    // Ask the AI for text output.
    success = ai.ask("text")
    if success == false {
        print("\(ai.lastErrorText!)")
        return
    }

    // Get the text response.
    let sbResponse = CkoStringBuilder()!
    ai.getOutputTextSb(sbResponse)
    print("\(sbResponse.getAsString()!)")

}