section_path: Features and limitations/Limitations
section_name: Limitations
paragraph_text: Limitations
  
  ChatGPT's training data only covers a period up the cut-off date, so it lacks knowledge of recent events. OpenAI has sometimes mitigated this effect by updating the training data. ChatGPT can find more up-to-date information by searching the web, but this doesn't ensure that responses are accurate, as it may access unreliable or misleading websites. ChatGPT is currently unable to access drive files.
  
  Training data also suffers from algorithmic bias. The reward model of ChatGPT, designed around human oversight, can be over-optimized and thus hinder performance, in an example of an optimization pathology known as Goodhart's law. These limitations which may be revealed when ChatGPT responds to prompts including descriptors of people. In one instance, ChatGPT generated a rap in which women and scientists of color were asserted to be inferior to white male scientists.