understand the technology
Diffusion, GAN, autoregressive token-based. Three architectures, each with implications for what a generator can do and what training data it needs.
architectures primer ->Because "best" depends on your use case, budget, and licence needs. This is a framework for evaluating any generator on the market, not a ranking of products that ages the moment a vendor reshuffles tiers.
Listicles call this "features". We treat each as a measurable dimension you can score any generator on yourself, with published research where it exists and a self-test protocol where it does not.
read the framework ->Diffusion, GAN, autoregressive token-based. Three architectures, each with implications for what a generator can do and what training data it needs.
architectures primer ->Commercial use, copyright protection, and indemnification are three separate questions. Most guides collapse them into one boolean. That is how people get sued.
the legal stack ->Fifteen questions covering capability, licensing, provenance, cost at scale, and exit. Print it. Reuse it on every new generator that launches.
the checklist ->Denoising Diffusion Probabilistic Models. The paper that established the architecture behind Stable Diffusion, Imagen, and most current generators.
High-Resolution Image Synthesis with Latent Diffusion Models. The Stable Diffusion paper.
Generative Adversarial Nets. The original GAN paper, the previous-generation architecture.
AI guidance and registration policy. Human authorship required for registration.
The vendor's own statement on training-data sourcing and indemnification.
Training-data transparency obligations and the text-and-data-mining opt-out under Article 4 of the Copyright Directive.
Most comparison content ranks named products on undemonstrable criteria like "best for text rendering" or "highest image quality". Those rankings are stale within a quarter and invite trademark complaints from the products ranked lower.
Instead, our /compare page explains the three meaningful ways generators differ, lists the commonly-discussed tools as a directory with links to their own pages, and stops there. If you arrived here from a query like "Midjourney vs DALL-E", what you actually want is "what is architecturally different and which fits my use case", which is the page we wrote.
// updated 2026-04-28