Use paid software for my ai startup, or build our own?

We are just 2 founders building this ai startup. This is an application that replaces what humans do with ai (openai, google gemini etc). In the past months, we have built a software that enables our application. It connects many ai apis with speech recognition so it has enabled our initial version. This tech is not our core product but a facilitator However, there is this a new company that is superior to our facilitator and does almost everything we wanted (with less flexibility) We feel like ditching a month of work and just paying for this, and focus on other stuff. On one hand, I feel that our business should use whatever that is out there with minimum friction to deliver value to our customers. On the other, I feel a bit hesitant replacing a crucial layer that would have been one of proprietary moat with a paid software. Feels like huge “ai” component we thought would just be a paid service. Sure there are so many other parts but this was one of them. Anyways, what would you do