One street, built three ways, for AI previz

Hasamaru Studio asks a question the previz trend usually skips. People are using GPT-6 Astra to drive Blender and then generate AI video from the blockout. Fine. But how much 3D do you actually need before the reference's texture and mood survive?

They built the same street three times, at three levels of detail, and compared. A comparison is worth more than another flawless flythrough, because it gives you a stopping rule. Detail has a cost. If the middle version already carries the atmosphere, the hero sculpt is vanity. If only the richest one does, the cheap blockout was a lie.

Astra in Blender is the means. The three streets are the result, and they are only interesting side by side.