The best alternatives to Synthesys X are chaosMachine, Kandinsky.io, and Postkit. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Synthesys X?
Universal-2 by AssemblyAI— Speech-to-Text API for conversational data
Create a vector or raster graphic for your project in no time with (almost) a single button. New images are generated on the fly and the chances of seeing exactly the same picture twice approach 0. New graphical features are added several times a week.
Kandinksy.io is a simple to use tool for creating abstract images. The goal for the tool is to provide a new and easy way for everyone to create abstract images without the professional skills required to do image editing.
Postkit allows you to build image templates using CSS, then generate new images from these templates through dynamically generated forms, URL's and our image generation API.