Option A: Gemini: maps the result, drafts the explanation
Best when: You want AI for both passes with a check between
What it does: AI maps and drafts; you check map and explanation
Strong at: Several supported files can go into one prompt
Limit: File analysis can fail; check each file was read
Free plan: Yes
Option B: Claude: builds the map and drafts the explanation
Best when: You want the first pass on map and draft done for you
What it does: AI builds map and draft; you check both
Strong at: Files go into one chat or a project Files section
Limit: Non-PDF documents give text only; embedded images are not read
Free plan: Yes
Option C: ChatGPT: maps the result and drafts, you check
Best when: You want ChatGPT to map and draft, checking both
What it does: AI maps and drafts; you check both
Strong at: Quote extraction from uploaded files is a listed use
Limit: Free plan caps uploads; drafting not covered on cited pages
Free plan: Yes, limited (upload and feature caps)