I put together an analysis comparing the privacy and encryption practices of 15 major AI chat platforms.

The report looks at: – whether conversations are used for model training by default – whether platforms provide end-to-end encryption or only TLS in transit – whether users can export or control their data – whether systems support multi-model routing

Platforms evaluated include ChatGPT, Claude, Gemini, Grok, Perplexity, DuckDuckGo AI Chat, and others.

One finding: only 7 of the 15 platforms currently offer end-to-end encryption.

Would be curious to hear feedback from people building AI infra or privacy tooling.