Option A: Gemini Notebook: maps and drafts the delta plan
Best when: You want an AI first pass before checking against originals
What it does: Gemini Notebook maps and drafts; you check against originals
Strong at: Answers questions grounded in your sources
Limit: Free notebook limited to 50 sources
Free plan: Yes
Option B: ChatGPT: builds the table and drafts the delta plan
Best when: You want ChatGPT to build and draft from pasted material
What it does: ChatGPT builds and drafts; you check against originals kept locally
Strong at: Answers questions; writes, rewrites and summarises text
Limit: Free file uploads limited to 3 per day
Free plan: Yes, limited (uploads, images, voice, analysis)
Option C: ChatGPT: builds and drafts, LanguageTool checks language
Best when: You want ChatGPT to draft plus a language pass on top
What it does: ChatGPT builds and drafts; LanguageTool fixes language; you decide
Strong at: Checks grammar and spelling in 30+ languages
Limit: Free coverage narrower than Premium
Free plan: ChatGPT: Yes, limited; LanguageTool: Yes, limited