Stable Diffusion

Flux, from the team behind Stable Diffusion, is a family of open and commercial image models that quickly set a new bar for photorealism and prompt fidelity. Its open variants can be self-hosted and fine-tuned, while hosted versions power many apps. Flux is favoured by developers who want state-of-the-art quality with flexible licensing.

Leonardo.ai is a production-focused image platform popular with game studios and designers for generating consistent assets. It layers fine-tuned models, custom training, real-time canvas editing and 3D-texture tools on top of an approachable interface. Generous free credits and asset-pipeline features make it a favourite for creative teams.

Playground AI is an image generator and editor aimed at marketers and small businesses creating graphics, logos and product imagery. It combines a friendly canvas, templates and its own models with a generous free tier. Playground focuses on practical commercial design rather than fine art.

Midjourney is widely regarded as the gold standard for aesthetic AI image generation, prized for its painterly, highly stylised output. Operated through a web app and Discord, it offers powerful style controls, character consistency and high-resolution upscaling. Artists, designers and marketers rely on it for striking concept art and visuals.