Our primary advantage right now is extensibility and simplicity. We are working with users that want to implement features that cant be generated with current generators and we enable them to implement those. Our generator does work for those basic use cases when you want a client to interact with an API, but if you need something more, like state management, sse, etc, we make the SDK easy to work with and extend.
If you've used some oss generators, their code is often a complete headache to just read. OpenAPI generator is a good example.