Works with any strong conversational model — Claude Sonnet 5, GPT-5.4, or Gemini 3 Pro. Needs a large enough context window to hold a long thread in full, and strong enough reasoning to track who said what across many replies without losing the thread or merging two people's statements together.Writing & CommunicationYou return from two days offline to a 34-message reply-all thread about a vendor contract renewal, where three different people proposed three different numbers, someone asked a question on Tuesday that never got answered, and two people appear to have agreed to something in a side thread you weren't copied on. You need to know what was actually decided, what's still open, and who owns what, in the next five minutes — not by rereading all 34 messages.
A prompt that pulls apart a messy email thread into what was actually decided, what's still open, who owns what, and a ready-to-send reply — catching the contradictions a simple summary would smooth over.