Honestly, after doing some research and trying out a few options myself, I’ve found that the best platform really depends on what you're trying to build and how technical you are. For example, if you're going for something really advanced—like an AI tutor that can explain concepts, answer questions, and feel natural in conversation—I'd personally recommend using OpenAI’s GPT-4 through their API or even just customizing a ChatGPT model. It's incredibly smart, and you can train it with your own tone or subject focus. I like that you can do a lot without heavy coding if you use their 'Custom GPT' feature." If you're more into a structured chatbot—like something that follows a quiz format or handles FAQs—Google Dialogflow is pretty solid. It integrates well with websites and even voice apps. But I found it a bit rigid when it comes to free-flowing conversations. Now, if you’re into low-code or want more control, Botpress is a great visual tool. You can plug in GPT as the brain but still control how the chatbot behaves and what it shows. It's more hands-on but super powerful. There’s also Rasa, which I think is amazing if you’re a developer and want to build something from scratch with total flexibility. But it’s a bit complex for beginners. Honestly, I’d say start with OpenAI’s ChatGPT or Dialogflow, depending on what you’re comfortable with. You can always scale up as your idea grows."