Midjourney's image models have multiple "temperature-like" parameters, such as --weird and --chaos. In the documentation you can see examples of how they visual

Midjourney's image models have multiple "temperature-like" parameters, such as --weird and --chaos. In the documentation you can see examples of how they visually affect the output. With high enough values the images seem almost unrelated to the prompt. My (almost entirely unfounded) guess is that ChatGPT has similar parameters, and on a new class of hardware or configuration there was an overflow or underflow issue which caused these parameters to be set to very high values. https://docs.midjourney.com/docs/weird-1 https://docs.midjourney.com/docs/weird-1 https://docs.midjourney.com/docs/chaos-1 https://docs.midjourney.com/docs/chaos-1