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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.

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Local $bSuccess = False

$bSuccess = False

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

$oAi = ObjCreate("Chilkat.Ai")

; 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).
$oAi.Provider = "openai"

; Use your provider's API key.
$oAi.ApiKey = "MY_API_KEY"

; Choose a model.
$oAi.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.
Local $sFile_id = "file-5G2xncrEiHbVfYPRpFgP9c"
$oAi.InputAddFileId($sFile_id,"application/json")

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

; Ask the AI for text output.
$bSuccess = $oAi.Ask("text")
If ($bSuccess = False) Then
    ConsoleWrite($oAi.LastErrorText & @CRLF)
    Exit
EndIf

; Get the text response.
$oSbResponse = ObjCreate("Chilkat.StringBuilder")
$oAi.GetOutputTextSb($oSbResponse)
ConsoleWrite($oSbResponse.GetAsString() & @CRLF)