They seem to all pitch the same features (or very similar) and the actual NLP / intent recognition bits are a black box.<p>Running experiments consistently across them would be quite resource intensive but may be the only option.<p>I'm wondering if anyone has had similar experiences and any insights around how they did it.
Whatever your use case, a chatbot is not the answer. Please reconsider what you are doing and make an FAQ for easy questions then pay for real support for interactions that need it. Chatbots solve nothing, and are about as hostile as you can get toward your users. If you're trying to build a system that closes the blinds or plays music on command, fine. But any kind of pawning of actual support on a chatbot is basically just saying fuck you to your customers.
If you want better transparency and control over the NLP/intent recognition bits and you still prefer a rapid-prototyping no-code vendor, I'd recommend BotDistrikt.