How text to image AI works
Most modern image models are diffusion models: they start from random noise and remove it step by step, guided by your text, until an image appears. Latent diffusion — the approach behind Stable Diffusion — does this in a compressed space so it runs fast enough for everyday use [1]. Newer models add better text understanding, so they follow long, specific prompts more faithfully.
The prompt formula
Most strong prompts answer the same questions, in this order:
- Style or medium — photo, oil painting, anime, 3D render, poster.
- Subject — who or what, with one or two defining details.
- Action and setting — what's happening, and where.
- Light — golden hour, softbox, neon, candlelight.
- Camera or composition — lens, angle, framing.
Why compare models
Every model has a personality: some are photographic, some painterly, some great with text, some fast. Running the same prompt on several models in Arena is the quickest way to find the one that suits your idea — then keep the seed and refine.
