When to use and next steps

Basic

Step 1 of 3

When to use SD 1.5

Situation	Use SD 1.5
You need 512×512 (or 512-based) output	Yes — native resolution.
You want fast iterations or lower cost	Yes — lighter and faster than SDXL/SD 3.
You rely on a community LoRA for SD 1.5	Yes — huge LoRA ecosystem.
You’re prototyping or exploring concepts	Yes — quick turnaround.
You’ll upscale the best results later	Yes — generate at 512, upscale keepers.