PowerBuilder

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.

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Ai
string ls_File_id
oleobject loo_SbResponse

li_Success = 0

li_Success = 0

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

loo_Ai = create oleobject
li_rc = loo_Ai.ConnectToNewObject("Chilkat.Ai")
if li_rc < 0 then
    destroy loo_Ai
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// 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).
loo_Ai.Provider = "openai"

// Use your provider's API key.
loo_Ai.ApiKey = "MY_API_KEY"

// Choose a model.
loo_Ai.Model = "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.
ls_File_id = "file-5G2xncrEiHbVfYPRpFgP9c"
loo_Ai.InputAddFileId(ls_File_id,"application/json")

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

// Ask the AI for text output.
li_Success = loo_Ai.Ask("text")
if li_Success = 0 then
    Write-Debug loo_Ai.LastErrorText
    destroy loo_Ai
    return
end if

// Get the text response.
loo_SbResponse = create oleobject
li_rc = loo_SbResponse.ConnectToNewObject("Chilkat.StringBuilder")

loo_Ai.GetOutputTextSb(loo_SbResponse)
Write-Debug loo_SbResponse.GetAsString()


destroy loo_Ai
destroy loo_SbResponse