No path is ranked. Choose by who should do the reading or arithmetic, how much traceability to source passages is needed, and which tool the team already uses.
Option A: Gemini: drafts the table and calendar
Best when: You want a calendar draft from a modest backlog
What it does: Gemini drafts table and calendar; you gate
Strong at: Chats by text, voice, photo or camera
Limit: Capacity conflicts are listed, not solved; you resolve them
Free plan: Yes
Option B: Notion AI: fills properties, you place items
Best when: You want to do the ordering yourself in Notion
What it does: Notion AI fills properties; you place items
Strong at: Drafts, edits and translates content in your workspace
Limit: Autofill guesses from page text; check every value
Free plan: Paid plan needed (Free and Plus get a trial)
Option C: You build the table; Claude builds the workbook
Best when: You want an editable workbook owners can adjust
What it does: You build the table; Claude builds the workbook
Strong at: Drafts and edits text in many formats
Limit: Formula checks catch order errors; you confirm each flag
Free plan: Yes