Option A: Gemini Notebook: drafts the matrix, then the pack
Best when: You want the matrix and pack drafted in one place
What it does: Gemini Notebook drafts both; you correct and decide
Strong at: Matrix feeds straight into the pack
Limit: You check every row against the originals
Free plan: Yes, limited (notebook and source caps)
Option B: Coda: builds the matrix, then drafts the pack
Best when: You work in Coda already
What it does: Coda builds and drafts; you check each stage
Strong at: Matrix and pack come from one workspace
Limit: Rows need your check against the originals
Free plan: Yes, limited (attachments capped at 1 GB per doc)
Option C: Notion AI: you write the pack, it summarises your draft
Best when: You want to write it all yourself
What it does: You write; Notion AI summarises so gaps show
Strong at: Your own judgement stays in the pack
Limit: AI only summarises; you do the drafting
Free plan: Paid plan needed