Blog — Saga Labs

Notes on private and on-device AI. Every number we publish comes from a primary source, linked in the article.

What ChatGPT, Claude and Gemini actually do with your conversations
Retention windows, human review and training defaults for the three main assistants, taken from their own published policies. Google keeps human-reviewed chats for three years after you delete them.
I sent OpenAI and Anthropic a GDPR erasure request. Neither told me what they kept.
Five layers sit between the button and the conversation being gone. We asked OpenAI and Anthropic to delete our data; neither said it was gone, and both were being accurate.