Leonardo AI's pitch is "every model under one roof." Browse their model gallery and you'll see dozens of options — different base models, different community fine-tunes, different aesthetic specializations. ZSky AI takes the opposite approach: a smaller curated set of models, free, with the trade-offs handled invisibly so you don't think about which "checkpoint" to use.

Both work. They're built for different brains.

This post is for the person trying to decide which one matches how they think.

TL;DR

ZSky AI Leonardo AI

Free tier Unlimited (with ads) 150 daily tokens (~30 images)

Paid plans $19–$79/mo $12–$60/mo

Model count Curated (small set) Large library + community models

Model picker Auto / minimal Always front-and-center

Onboarding speed Prompt and go Pick model, pick preset, prompt

Image-to-image Yes Yes

Video Yes Yes (Motion add-on)

Negative prompts Yes Yes

Where Leonardo Wins

Model variety.…