Validate your ChatGPT or Gemini travel itinerary

AI writes a confident itinerary. It does not check whether the places are open.

A ChatGPT London itinerary listing six places — Tower of London, Sky Garden, Locanda Locatelli, Churchill War Rooms, Tate Modern, Borough Market — becomes a Tripnostic review where each place carries a status flag: Locanda Locatelli permanently closed, Tower of London and Sky Garden and Churchill War Rooms flagged to book ahead, Tate Modern and Borough Market checked open for every day of the trip.

The problem

An AI itinerary reads beautifully and is often wrong in ways you only discover on the trip: places that moved or closed, hours that do not match your dates, sights that need tickets booked weeks ahead, or stops scattered across the city with no regard for transit.

How Tripnostic handles it

  • Paste the AI itinerary as-is. Tripnostic pulls out each place and looks it up against real data.
  • Each stop is checked for opening hours on your dates, closures, and what needs booking ahead.
  • Places are regrouped by neighborhood so the AI’s day order does not send you back and forth across town.
Check my trip

Tripnostic product preview

tripnostic.com/trips
Tripnostic review screen showing trip-date validation, booking-ahead flags, and a checked places list.

Questions

Why does an AI itinerary need checking?
Language models generate plausible-sounding plans from training data, not live information. Opening hours, closures, ticketing, and even whether a place still exists are exactly the details they get wrong — and the ones that ruin a day.
Do I need to reformat the itinerary first?
No. Paste it however ChatGPT or Gemini gave it to you — day headings, bullets, prose. Tripnostic handles the extraction.
Is Tripnostic free?
Yes. Paste an itinerary and get it validated at no cost.

Related resources

More guides

AI itinerary checks

What's on where you're going