How do model output interleaved text-image with multimodal input?

[URRealHero]

Does the model require further finetune? I'm wondering why the playground use a 'for' loop to generate a story

[URRealHero]

What I mean is how can it generate multi images with each image a caption. If I use a for loop, wouldn't the model repeatedly generate similar scene again and again? How did the playground.py ensure it can generate a sequence of story? How to make a coherent multi-images generation?