Go

Referencing a Pre-Uploaded File by file_id in an AI Request

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Some AI proviers have a Files API that lets you upload content once and then reference it later in generation requests using a file_id. This is especially useful for large documents, reuse across multiple prompts, or keeping inputs structured and separate from your prompt text.

This example demonstrates how to use a file_id in a request.

Go

    success := false

    success = false

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

    ai := chilkat.NewAi()

    // The provider can be "openai", "google", "claude", "mistral", "deepseek", "xai", or any provider
    // that supports referencing pre-uploaded files by a file_id (or file uri).
    ai.SetProvider("openai")

    // Use your provider's API key.
    ai.SetApiKey("MY_API_KEY")

    // Choose a model.
    ai.SetModel("gpt-5-mini")

    // See the following example showing how to upload a file
    // Upload a File to an AI Provider (OpenAI, Google, Antropic, X)

    // Use the file_id of the pre-uploaded file.
    file_id := "file-5G2xncrEiHbVfYPRpFgP9c"
    ai.InputAddFileId(file_id,"application/json")

    ai.InputAddText("Explain why Hamlet delays taking revenge, using only evidence from the file.")

    // Ask the AI for text output.
    success = ai.Ask("text")
    if success == false {
        fmt.Println(ai.LastErrorText())
        ai.DisposeAi()
        return
    }

    // Get the text response.
    sbResponse := chilkat.NewStringBuilder()
    ai.GetOutputTextSb(sbResponse)
    fmt.Println(*sbResponse.GetAsString())

    ai.DisposeAi()
    sbResponse.DisposeStringBuilder()