Tcl

Multimodal Input: File Data

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Demonstrates sending a request that includes both text and PDF file data for the AI to analyze.

Note: At the time of writing this example, xAI, Perplexity, and DeepSeek do not have the ability to accept non-image multimodal data or URLs.

Tcl

load ./chilkat.dll

set success 0

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

set ai [new_CkAi]

# The provider can be "openai", "google", or "claude".
# At the time of writing this example, "deepseek", "xai", and "perplexity" do not have the ability to process non-image multimodal inputs.
# Support for additional providers will be added in future versions of Chilkat.
CkAi_put_Provider $ai "claude"

# Use your provider's API key.
CkAi_put_ApiKey $ai "MY_API_KEY"

# Choose a model.
CkAi_put_Model $ai "claude-opus-4-1-20250805"

# Add both text input, and PDF file data.
CkAi_InputAddText $ai "What is in this file?"

set bd [new_CkBinData]

# We're passing a relative local file path here.. (relative the the app's current working directory)
set success [CkBinData_LoadFile $bd "qa_data/pdf/shakespeare.pdf"]
if {$success == 0} then {
    puts [CkBinData_lastErrorText $bd]
    delete_CkAi $ai
    delete_CkBinData $bd
    exit
}

# Provide the filename in the 1st argument.  The file extension is important to indicate the type of file.
CkAi_InputAddFileData $ai "shakespeare.pdf" $bd ""

# Ask the AI for text output.
set success [CkAi_Ask $ai "text"]
if {$success == 0} then {
    puts [CkAi_lastErrorText $ai]
    delete_CkAi $ai
    delete_CkBinData $bd
    exit
}

# Get the text response.
set sbResponse [new_CkStringBuilder]

CkAi_GetOutputTextSb $ai $sbResponse
puts [CkStringBuilder_getAsString $sbResponse]

# -------------------------------------------------------------
# The response is in markdown format.
# Also see Markdown to HTML Conversion Examples.
# -------------------------------------------------------------

# Sample output:

# This PDF file contains a famous quote from William Shakespeare's "Romeo and Juliet". The quote appears twice on the page:
# 
# "These violent delights have violent ends
# And in their triumph die, like fire and powder,
# Which as they kiss consume. The sweetest honey
# Is loathsome in his own deliciousness
# And in the taste confounds the appetite.
# Therefore love moderately; long love doth so;
# Too swift arrives as tardy as too slow."
# 
# The file also includes a portrait image of William Shakespeare. This particular quote is spoken by Friar Lawrence in the play, warning about the dangers of passionate, 
# immoderate love - suggesting that love that burns too intensely tends to burn out quickly, just as fire and gunpowder consume each other when they meet.

delete_CkAi $ai
delete_CkBinData $bd
delete_CkStringBuilder $sbResponse