OpenAI Chat in Go

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The content and code samples on this page were generated by using the ai CLI with customized prompts in this repository.

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Please review the content and code before using it in your application.

This sample demonstrates how to use the OpenAI Chat API in a Go console application.

main.go
openai_chat_completions_hello_world.go

How to generate this sample

Command

ai dev new openai-chat --go

Output

AI - Azure AI CLI, Version 1.0.0
Copyright (c) 2024 Microsoft Corporation. All Rights Reserved.

This PUBLIC PREVIEW version may change at any time.
See: https://aka.ms/azure-ai-cli-public-preview

Generating 'openai-chat' in 'openai-chat-go' (3 files)...

go.mod
main.go
openai_chat_completions_hello_world.go

Generating 'openai-chat' in 'openai-chat-go' (3 files)... DONE!

main.go

STEP 1: Read the configuration settings from environment variables:

main.go

openAIAPIKey := os.Getenv("AZURE_OPENAI_API_KEY")
if openAIAPIKey == "" {
    openAIAPIKey = "<insert your OpenAI API key here>"
}
openAIEndpoint := os.Getenv("AZURE_OPENAI_ENDPOINT")
if openAIEndpoint == "" {
    openAIEndpoint = "<insert your OpenAI endpoint here>"
}
openAIChatDeploymentName := os.Getenv("AZURE_OPENAI_CHAT_DEPLOYMENT")
if openAIChatDeploymentName == "" {
    openAIChatDeploymentName = "<insert your OpenAI chat deployment name here>"
}
openAISystemPrompt := os.Getenv("AZURE_OPENAI_SYSTEM_PROMPT")
if openAISystemPrompt == "" {
    openAISystemPrompt = "You are a helpful AI assistant."
}

STEP 2: Initialize the helper class with the configuration settings:

main.go

chat, err := NewOpenAIChatCompletionsExample(openAIEndpoint, openAIAPIKey, openAIChatDeploymentName, openAISystemPrompt)
if err != nil {
    log.Fatalf("ERROR: %s", err)
}

STEP 3: Obtain user input, use the helper class to get the assistant's response, and display responses as they are received:

main.go

for {
    fmt.Print("User: ")
    input, _ := getUserInput()
    if input == "exit" || input == "" {
        break
    }

    response, err := chat.GetChatCompletions(input)
    if err != nil {
        log.Fatalf("ERROR: %s", err)
    }

    fmt.Printf("Assistant: %s\n\n", response)
}

openai_chat_completions_hello_world.go

STEP 1: Create the client and initialize chat message history with a system message:

openai_chat_completions_hello_world.go

client, err := azopenai.NewClientWithKeyCredential(openAIEndpoint, keyCredential, nil)
if err != nil {
    return nil, err
}

messages := []azopenai.ChatRequestMessageClassification{
    &azopenai.ChatRequestSystemMessage{
        Content: &openAISystemPrompt,
    },
}

STEP 2: When the user provides input, add the user message to the chat message history:

openai_chat_completions_hello_world.go

func (chat *OpenAIChatCompletionsExample) GetChatCompletions(userPrompt string) (string, error) {
    chat.options.Messages = append(chat.options.Messages, &azopenai.ChatRequestUserMessage{Content: azopenai.NewChatRequestUserMessageContent(userPrompt)})

STEP 3: Send the chat message history to the OpenAI Chat API and process the response:

openai_chat_completions_hello_world.go

resp, err := chat.client.GetChatCompletions(context.TODO(), *chat.options, nil)
if err != nil {
    return "", err
}

responseContent := *resp.Choices[0].Message.Content
chat.options.Messages = append(chat.options.Messages, &azopenai.ChatRequestAssistantMessage{Content: to.Ptr(responseContent)})

return responseContent, nil
}