What Should Developers Consider Before Adding AI to a SaaS Product?

I'm interested in learning how developers approach AI integration in SaaS applications.

Adding features such as chatbots, automated support, or AI-based data analysis can be useful, but it also brings challenges related to accuracy, API costs, data security, and performance.

Sometimes, a simple rule-based feature may work better than an AI solution. The right choice depends on the problem, the available data, and the needs of the users.

For those who have worked on SaaS projects, how do you decide whether to use AI for a feature? What has been your biggest challenge when implementing it?