Koko let 4,000 people get therapeutic help from GPT-3 without telling them first.
"During the AI experiment—which applied to about 30,000 messages, according to Morris—volunteers providing assistance to others had the option to use a response automatically generated by OpenAI's GPT-3 large language model instead of writing one themselves (GPT-3 is the technology behind the recently popular ChatGPT chatbot)."