Pick a work paste, pick a tool, hit send โ and watch where the text actually goes. Then sanitize the same prompt and see that the answer barely changes. Nothing here talks to any real AI; it all runs in your browser.
Retention/training behaviour shown per tier is accurate as of 2026-09-03 and vendor-dependent โ defaults change, which is itself part of the lesson. On personal/consumer accounts at that date: ChatGPT Free/Plus trains on your chats unless you switch it off (Settings โ Data Controls); Gemini consumer chats can be sampled for human review and kept up to 3 years; Claude consumer chats are retained up to 5 years if you allow training, ~30 days if you don't. Business/enterprise/API tiers of all three: not trained on by default. The rule that never changes: an unapproved or personal tool means data outside THG contracts and visibility.