Integration with ChatGPT API

Published March 19, 2023・Last updated May 10, 2025・1 min read

ChatGPT is a large language model (LLM) that understands and processes human prompts to produce helpful responses. OpenAI provides an API to interact with the ChatGPT model (gpt-3.5-turbo).

Prerequisites

OpenAI account
Generated API key
Enabled billing

Integration

Below is an example of interacting with ChatGPT API based on a given prompt.

const handlePrompt = async (prompt) => {
  const response = await axios.post(
    'https://api.openai.com/v1/chat/completions',
    {
      model: 'gpt-3.5-turbo',
      messages: [
        {
          role: 'user',
          content: prompt
        }
      ]
    },
    {
      headers: {
        Authorization: `Bearer ${process.env.OPENAI_API_KEY}`
      }
    }
  );
  return response?.data?.choices?.[0]?.message?.content;
};

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