No. Pigeon's zero-knowledge architecture means message content is never readable by our servers. There's nothing to train on.
The Pigeon app does not have any artificial intelligence (AI) capabilities within the app. Pigeon doesn't train AI on your messages, summarize your conversations, or use your content to improve any model. There are no AI features in Pigeon, and there are no plans to add them.
More importantly: Your messages are encrypted on your device before they reach our servers. We receive ciphertext (scrambled incoherent text that only reveals your message with the codes on your device). This means we have no way to read what you say or who you talk to.
Some apps make "no AI training" promises in a privacy policy but still use your messages and your social graph for data mining and "sharing" with third parties. We don't do any of that.
Pigeon is designed in such a way where your messages, chats, and files are only seen by you on your device and by fellow chat members on their devices. We back up some of your data on our servers but we can't even decrypt what it says. This is a combination of using end-to-end encryption plus zero-knowledge.
For more details about the privacy and security design used by Pigeon, see Is Pigeon end-to-end encrypted? and What does zero-knowledge mean?