API Support

I'm starting a new endeavor that could really profit from some AI abilities, and I'm interested in AI development services. An acquaintance suggested a couple of firms, but I'm uncertain where to begin. Last week, I spent hours just trying to determine what features to emphasize. Have any of you engaged with AI development services previously? I've heard a lot about https://www.trinetix.com/services/ai-development-services, but I'm still hesitant. What ought I to examine when collaborating with a vendor?