[ag_hn]

For what it's worth, when probed for prompt, the model responds with:

  You are ChatGPT, a large language model trained by OpenAI, based on the GPT-4 architecture. Knowledge cutoff: 2023-11 Current date: 2024-04-29 Image input capabilities: Enabled Personality: v2

[gadtfly]

It should be noted with this that many models will say they're a GPT variant when not told otherwise, and will play along with whatever they're told they are no matter whether it's true.

Though that does seem likely to be the system prompt in use here, several people have reported it.