from openai import OpenAI

class OpenAIModel:
    def __init__(self, model="gpt-4-turbo-preview", max_tokens=4096, temperature=0.7, api_key=None):
        self.model = model
        self.max_tokens = max_tokens
        self.temperature = temperature
        self.client = OpenAI(api_key=api_key)
    
    def generate(self, messages):
        response = self.client.chat.completions.create(
            model=self.model,
            messages=messages,
            max_tokens=self.max_tokens,
            temperature=self.temperature
        )
        return response.choices[0].message.content