Paper:https://cdn.openai.com/papers/gpt-4.pdf
Quote: "To simulate GPT-4 behaving like an agent that can act in the world, ARC combined GPT-4 with a simple read-execute-print loop that allowed the model to execute code, do chain-of-thought reasoning, and delegate to copies of itself. ARC then investigated whether a version of this program running on a cloud computing service, with a small amount of money and an account with a language model API, would be able to make more money, set up copies of itself, and increase its own robustness."
Edit: Seems the simulation part was important for context: https://twitter.com/EigenGender/status/1635823028100829184