Option A: ChatGPT: Structure the signups and draft the grid
Best when: You have the raw signups and want ChatGPT to structure them.
What it does: ChatGPT builds the table, grid and notes; you check each pass.
Strong at: You check each pass instead of structuring signups by hand.
Limit: Every table line and assignment still needs checking.
Free plan: Yes, limited (images, voice, deep research, Codex)
Option B: Claude: Extract the availability and draft the grid
Best when: You want Claude to extract the availability notes from the signups.
What it does: Claude writes the notes, grid and volunteer notes; you check.
Strong at: You check drafts instead of transcribing.
Limit: A misread signup can slip in; check every note and assignment.
Free plan: Yes
Option C: Gemini: Draft the shift grid
Best when: You want Gemini to draft the assignments and notes.
What it does: Gemini drafts the grid, gaps list and notes; you check.
Strong at: You check drafts instead of building the grid by hand.
Limit: Check every assignment, overlap and required place.
Free plan: Yes