(Tcl) OpenAI (ChatGTP) Create Chat Completion

See more OpenAI ChatGPT Examples

Shows how to create a model response for a given chat conversation.

For more information, see https://platform.openai.com/docs/api-reference/chat/create

Chilkat Tcl Extension Downloads Chilkat Tcl Extension Downloads

load ./chilkat.dll

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

set http [new_CkHttp]

# Implements the following CURL command:

# curl https://api.openai.com/v1/chat/completions \
#   -H "Content-Type: application/json" \
#   -H "Authorization: Bearer $OPENAI_API_KEY" \
#   -d '{
#     "model": "gpt-3.5-turbo",
#     "messages": [{"role": "user", "content": "Hello!"}]
#   }'

# Use the following online tool to generate HTTP code from a CURL command
# Convert a cURL Command to HTTP Source Code

# Use this online tool to generate code from sample JSON:
# Generate Code to Create JSON

# The following JSON is sent in the request body.

# {
#   "model": "gpt-3.5-turbo",
#   "messages": [
#     {
#       "role": "user",
#       "content": "Hello!"
#     }
#   ]
# }

set json [new_CkJsonObject]

CkJsonObject_UpdateString $json "model" "gpt-3.5-turbo"
CkJsonObject_UpdateString $json "messages[0].role" "user"
CkJsonObject_UpdateString $json "messages[0].content" "Hello!"

# Adds the "Authorization: Bearer $OPENAI_API_KEY" header.
# This is NOT a real key.  Change the "sk-vi...." to your own key.
CkHttp_put_AuthToken $http "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"
CkHttp_SetRequestHeader $http "Content-Type" "application/json"

# resp is a CkHttpResponse
set resp [CkHttp_PostJson3 $http "https://api.openai.com/v1/chat/completions" "application/json" $json]
if {[CkHttp_get_LastMethodSuccess $http] == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkJsonObject $json
    exit
}

set sbResponseBody [new_CkStringBuilder]

CkHttpResponse_GetBodySb $resp $sbResponseBody

set jResp [new_CkJsonObject]

CkJsonObject_LoadSb $jResp $sbResponseBody
CkJsonObject_put_EmitCompact $jResp 0

puts "Response Body:"
puts [CkJsonObject_emit $jResp]

set respStatusCode [CkHttpResponse_get_StatusCode $resp]
puts "Response Status Code = $respStatusCode"
if {$respStatusCode >= 400} then {
    puts "Response Header:"
    puts [CkHttpResponse_header $resp]
    puts "Failed."
    delete_CkHttpResponse $resp

    delete_CkHttp $http
    delete_CkJsonObject $json
    delete_CkStringBuilder $sbResponseBody
    delete_CkJsonObject $jResp
    exit
}

delete_CkHttpResponse $resp

# Sample JSON response:
# (Sample code for parsing the JSON response is shown below)

# {
#   "id": "chatcmpl-123",
#   "object": "chat.completion",
#   "created": 1677652288,
#   "choices": [
#     {
#       "index": 0,
#       "message": {
#         "role": "assistant",
#         "content": "\n\nHello there, how may I assist you today?"
#       },
#       "finish_reason": "stop"
#     }
#   ],
#   "usage": {
#     "prompt_tokens": 9,
#     "completion_tokens": 12,
#     "total_tokens": 21
#   }
# }

# Sample code for parsing the JSON response...
# Use the following online tool to generate parsing code from sample JSON:
# Generate Parsing Code from JSON

set id [CkJsonObject_stringOf $jResp "id"]
set v_object [CkJsonObject_stringOf $jResp "object"]
set created [CkJsonObject_IntOf $jResp "created"]
set Prompt_tokens [CkJsonObject_IntOf $jResp "usage.prompt_tokens"]
set Completion_tokens [CkJsonObject_IntOf $jResp "usage.completion_tokens"]
set Total_tokens [CkJsonObject_IntOf $jResp "usage.total_tokens"]
set i 0
set count_i [CkJsonObject_SizeOfArray $jResp "choices"]
while {$i < $count_i} {
    CkJsonObject_put_I $jResp $i
    set index [CkJsonObject_IntOf $jResp "choices[i].index"]
    set Role [CkJsonObject_stringOf $jResp "choices[i].message.role"]
    set Content [CkJsonObject_stringOf $jResp "choices[i].message.content"]
    set finish_reason [CkJsonObject_stringOf $jResp "choices[i].finish_reason"]
    set i [expr $i + 1]
}

delete_CkHttp $http
delete_CkJsonObject $json
delete_CkStringBuilder $sbResponseBody
delete_CkJsonObject $jResp