As we've discussed, it's challenging to understand exactly where a quantum computer can be superior to a conventional one. Horizon appears to be trying to automate this process.
What makes Horizon unique is that it takes conventional source code and then automatically analyzes that to figure out where a quantum computer could speed up an algorithm. Right now, the company can identify potential speedups in code written for Matlab and Octave.
https://techcrunch.com/2020/06/22/horizon-quantum-raises-3-23m-for-its-quantum/