If you use Adobe Firefly for free, you just need an Adobe account, and you get 2000 free credits for generating images with its core features. There are various subscription plans if you need more advanced options and more credits.  · Adobe Firefly is also built into the Adobe Creative Cloud plans that include Photoshop, Lightroom, Illustrator, and Adobe Express, so you don't need to pay extra to use it inside those solutions once you already have a Creative Cloud subscription.

DALL-E is a generative AI model from OpenAI that uses a text-to-image mechanism to create high-quality outputs. You can use it directly inside ChatGPT and iterate on the images in a conversation, instead of going to a separate app or interface. Apart from that, it's not really integrated into any other design tools, but you can save your creations and use them elsewhere. DALL-E has a limited free version but is also included in the ChatGPT subscriptions. It works on browsers and inside ChatGPT apps for computers and mobile devices.  · NightCafe Creator combines multiple AI models inside one in

Adobe Firefly is a standalone product that works on any modern web browser on Windows, macOS, and Linux. You can use it on PCs, laptops, and even tablets, so you're not limited to a specific operating system. · If you're looking to use Adobe Firefly as part of Creative Cloud products, it works only on the operating system on which the host product works. Usually, Photoshop, Lightroom, and Illustrator have versions for Windows and macOS.