Option A: ChatGPT: builds questions from checked memories
Best when: You want questions from confirmed notes, not inventions
What it does: ChatGPT drafts questions and guide; you check facts
Strong at: Source labels stay attached to each question
Limit: Accuracy not confirmed by the cited quote
Free plan: Yes, limited (free tier limits images, voice, deep research, Codex)
Option B: Claude: starts from the relative's comfort
Best when: You want consent and comfort to shape the questions
What it does: Claude interviews you, drafts; you mark expressed preferences
Strong at: Permission checkpoints and low-pressure alternatives built in
Limit: Accuracy not confirmed by the cited quote
Free plan: Yes, limited (usage capped in 5-hour and weekly windows)
Option C: Gemini: finds gaps on a simple life timeline
Best when: You want a timeline as a question map, not biography
What it does: Gemini plans around gaps; you check dates and relationships
Strong at: Blank answer areas keep uncertain history open
Limit: Accuracy not confirmed by the cited quote
Free plan: Yes