GPT-4 APi takes too long to respond?

gpt-4 model is taking almost 4x gpt-3.5-turbo for the same questions I ask?
gtp-4 ~28 sec
gtp-3.5-turbo ~7sec
Is that expected for a question like : Can you tell me about cars?

Understood. I cannot test gpt-4 because I have not been given API access by OpenAI; but for turbo I just got a 10 second completion time:

Subsequent tests showed up to 15 sec completion times for this small prompt.