Best free AI Image Generator?

[MatreroG]

It's not really a request but more of a discussion. Has anyone managed to find or come across a free AI Image Generator that is really worthwhile and can generate good examples of pixel art?
Personally, I have tried some free ones but the results are bad or very limited in their scale.

[O Ilusionista]

I saw some too, but nothing impressed me yet.

[ExeLord]

No, not for pixel art. Here the ones I generated with Creative Fabrica's Spark Art:

(click to show/hide)

Ain't getting much better than this yet...

[MatreroG]

Some of this is what I was referring to in the first place.
There are multiple links on the web, most of them have quite a few limitations in their free use, sometimes achieving only a low quality result.

Midjourney is the most popular and was free for a while.

From what I read, a good alternative, at least to what I'm looking for (pixel art), is Leonardo AI. You have to request access to the trial version and due to its high demand it can take a few months. It offers image generation engines, one in particular specialized in pixel art or vintage aesthetics.
I'm on the waiting list to try it.
> https://leonardo.ai/

A guy called Videoman from MGF mentioned Stable Diffusion that I am testing these days. Not an AI generator engine, more of a pixelation tool. The final art is not pixel perfect but it is still interesting to try it.
> https://huggingface.co/PublicPrompts/All-In-One-Pixel-Model