How to track individual usage?

This code used to work for me before. But now when I run it, I get this error. Did OpenAI change their policy on how many requests we can make per min? Is anyone else getting the same error?

Error:

{'error': {'message': "You've exceeded the 5 request/min rate limit, please slow down and try again.", 'type': 'invalid_request_error', 'param': None, 'code': 'rate_limit_exceeded'}}