Image

FLUX

Paid

FLUX is Black Forest Labs' family of image models, reachable through an API, a browser playground or downloaded open weights. It covers text-to-image and image-to-image, with the FLUX 3 line handling prompts, reference images and outputs up to 4K. Klein versions are smaller and cheaper, and commercial licences allow fine-tuning and LoRA training on your own hardware. Developers pay per generated image rather than a subscription, with prices set by model and resolution. The playground runs in the browser, so you can test prompts before writing code; teams wanting a fixed monthly bill need to estimate volume first.

Midjourney

Paid

Midjourney is an image generation service known for distinctive, highly aesthetic results. It runs primarily through Discord and a web app: you send a prompt, receive a grid of four images, and refine with variations, upscaling and remixing. Parameters control aspect ratio, stylisation, chaos and reference images, and style references let you keep a consistent look across a series. It excels at concept art, illustration, product mockups and atmospheric imagery. There is no free tier; subscriptions are monthly and include a commercial-use licence and a set amount of fast generation time, with slower unlimited modes on higher plans. Text rendering remains a weak point.