Option A: ChatGPT: drafts replies, then applies your fixes
Best when: You want a first full draft quickly from checked notes
What it does: ChatGPT drafts replies and applies your fixes; you check twice
Strong at: Starts from a complete draft, not a blank page
Limit: May phrase things you never supplied; check every line
Free plan: Yes, limited (uploads, images, voice and analysis)
Option B: Claude: drafts each reply from the trimmed list
Best when: You want to keep every checking and approval decision
What it does: Claude drafts replies; you check and approve each one
Strong at: Prompt limits the draft to what the reviews say
Limit: Can add content or miss the shop voice; compare each reply
Free plan: Yes, limited (usage capped in 5-hour windows)
Option C: Claude drafts, Grammarly tunes the voice
Best when: You want a drafted reply plus a wording polish
What it does: Claude drafts, Grammarly tunes voice; you compare and save
Strong at: Grammarly only sees the draft you already checked
Limit: Two tools means two pastes; compare every wording edit
Free plan: Claude: Yes, limited; Grammarly: Yes, limited