Tinfoil Chat (https://chat.tinfoil.sh/) is a chatbot advertised as secure thanks to end-to-end data encryption, with each conversation having its own unique key.

7 language models available including Kimi 2.6, GLM 5.1, Deepseek v4 Pro, multimodal, and web connection.

Sharing by url possible, copy / paste easy.

Many elements open-source, including the verification of the encryption: https://github.com/tinfoilsh

According to the tests, per day: 3 free instructions without account, 5 with.