I can share my thoughts 🙂
As far as I know, the only thing that Voiceflow has that Bptpress doesn't have is a direct way of adding voice to your bot, but there are ways to do it in Botpress.
https://discord.com/channels/1108396290624213082/1219321733862002779
https://discord.com/channels/1108396290624213082/1218932019141021699
Bptpress is so much more advanced in every field.
First thing to point out is the amount of integrations each one has.
Botpress GitHub page
https://github.com/botpress/botpress/tree/master/integrations where every integration except the two newest integrations (Messaging API, and Weavel for analytics)
VoiceFlow integrations:
https://www.voiceflow.com/functions
I think the difference is clear 🙂
You might also have noticed that a lot of the Botpress code is available, and you can see how so many things work, it's great!
Botpress also has an API endpoint for pretty much everything.
https://botpress.com/docs/api-documentation/
I like to think that there are no limits with Bptpress, simply just because I haven't run into any.
I could go on and on about why Botpress is better, but I think I proved my point. The last thing that I will point out is the pricing! Botpress is so much cheaper and so much more generous. You don't have to pay extra to get access to something, everything comes with the Free tier. The free tier is more than enough for any tester. I have personally never had to spend any money while in the testing/developing fase.
https://www.voiceflow.com/pricing
https://botpress.com/pricing
I agree with Robert, people and just repeating, without knowing