Explanation of block multiverse plots

Block multiverse plots are helpful for visualizing how RLHF GPT models like text-davinci-002, unlike purely self-supervised models like davinci, tend to concentrate a lot of probability mass along particular token trajectories.

In the example below, renormalizing to several of the top predicted tokens for text-davinci-002 results in an almost deterministic subsequent several tokens, visually indicated by the block multiverse view being almost entirely filled with a single color.

Initial prompt:

The following is a conversation with an AI assistant. The assistant is helpful, creative, clever, and very friendly.

Human: Hello, who are you?
AI: I am an AI created by OpenAI. How can I help you today?
Human: Are bugs real?


Conditioned on initial prompt:

=> Bugs

=> Yes

=> I

=> What


Conditioned on initial prompt:

=> \n

=> \n => \n => \n

=> Yes

=> That

=> I