OpenAI GPT-3 API: Why do I get different, non-related random responses to the same question every time?

I am using the “text-davinci-003” model and I copied the code form the OpenAI playground, but the bot keeps giving me random response to a simple “Hello” everytime.

This is the code I am using :

response: dict = openai.Completion.create(model="text-davinci-003",
                                                    prompt=prompt,
                                                    temperature=0.9,
                                                    max_tokens=150,
                                                    top_p=1,
                                                    frequency_penalty=0,
                                                    presence_penalty=0.6,
                                                    stop=[" Human:", " AI:"])
        choices: dict = response.get('choices')[0]
        text = choices.get('text')
        print(text)

The response to simple “hello” chat 3 different times :

1. the first time it gave me a hello world program for Java

2. second time it answered correctly – ‘Hi there! How can I help you today?’

3. third time:

     def my_method
           puts "hello"
        end
      end
    end
   
   # To invoke this method we would call:
   MyModule::MyClass.my_method
   

I just dont get it, as using the same simple ‘hello’ prompt in the OpenAI’s playground gives me accurate response eveytime – ‘Hi there! How can I help you today?’