Stable Diffusion

Image Generation

Launched

Aug 22, 2022

Pricing

Open Source / Free

About

Stability AI's image model open-sourced in August 2022 — the bedrock of the open ecosystem behind ComfyUI and countless fine-tunes.

ImageOpen SourceStability

Stability AI released the SD 3.5 family in October 2024, but with FLUX rising fast, its dominance in open image generation is under challenge.

FLUX.2

Black Forest Labs' 32B-parameter open image model released in November 2025, with multi-reference editing and composition.

Midjourney

The benchmark AI image tool in open beta since July 2022, famed for artistic quality — V7 adds default personalization.

Ideogram

An AI image tool launched August 2023 by ex-Google Brain researchers, known for accurate in-image text rendering.

Leonardo.Ai

An AI creative platform launched in late 2022 for game assets and marketing design, acquired by Canva in 2024.