Option A: ChatGPT: groups the holds and drafts the summary
Best when: Grouping, totals and drafting in one chat
What it does: ChatGPT groups and drafts; you check, approve
Strong at: Totals run as readable Python code
Limit: Complex files may not analyse fully; check invoice count
Free plan: Yes, limited (uploads and analysis capped)
Option B: Claude: groups the export and drafts the Word summary
Best when: One assistant groups and drafts the Word summary
What it does: Claude groups and drafts; you check, approve
Strong at: Produces a formatted Word document from analysed data
Limit: Grouping accuracy not stated; recompute one total
Free plan: Yes
Option C: Mistral Vibe and Gemini: controlled reason list, drafted summary
Best when: You want the reason list under your control
What it does: Mistral Vibe classifies and totals; Gemini drafts; you check
Strong at: Reason list confirmed before any classification runs
Limit: Mistral Vibe learns from a sample; check all rows covered
Free plan: Yes