OpenAI API Custom Function

/**
 * @customfunction
 * @param {string} prompt - the prompt text
 * @param {string} apikey - Your API Key from Open AI
 * @param {string} model - AI Model
 * @param {string} max_tokens - Maximum tokens to spend
 * @param {number} temperature - Between 0 and 1
 * @param {number} top_p - Between 0 and 1
 * @param {number} frequency_penalty - Between 0 and 1
 * @param {number} presence_penalty - Between 0 and 1
 * @param {string} role - [OPTIONAL] System Role
 */
function OPENAI(prompt,apikey,model,temperature,max_tokens,top_p,frequency_penalty,presence_penalty,role="") {
  var data = {
  "model": model,
  "messages": [{"role": "system", "content": role},
                {"role": "user", "content": prompt }],
  "temperature": temperature,
  "max_tokens": max_tokens,
  "top_p": top_p,
  "frequency_penalty": frequency_penalty,
  "presence_penalty": presence_penalty
}
  var options = {
    'method': 'POST',
    'contentType': 'application/json',
    'headers': {
      'Authorization' : 'Bearer ' + apikey
    },
    'payload': JSON.stringify(data)
  }
  var answer = UrlFetchApp.fetch("https://api.openai.com/v1/chat/completions",options)
  var response = answer.getContentText()
  var json = JSON.parse(response)
  return json.choices[0].message.content
}