Option A: Claude: drafts the timeline, you reconcile it with originals
Best when: The excerpts are settled and you want a first chronology.
What it does: Claude drafts the chronology; you reconcile it with originals.
Strong at: Drafts and edits text in many formats.
Limit: You must catch unsupported alert-to-event links and omitted log context.
Free plan: Yes, limited (usage limit resets every five hours)
Option B: ChatGPT: drafts incident questions, you approve them first
Best when: You want the questions approved before any evidence matrix.
What it does: ChatGPT drafts questions and matrix; you approve and reconcile.
Strong at: Writes, rewrites and summarises text.
Limit: Two passes; the second may not follow the approved checklist.
Free plan: Yes, limited (images, voice, deep research, Codex)
Option C: Gemini: drafts the timeline and challenges its own draft
Best when: You want a drafted timeline challenged before you rely on it.
What it does: Gemini drafts and critiques; you settle each point.
Strong at: Drafts and summarises text.
Limit: A quiet self-critique does not prove the timeline is complete.
Free plan: Yes