Fact-check a Vienna trip plan from ChatGPT, Claude and Gemini

PartialEvidence: Article or interviewPosted Oct 21, 2026Last checked Nov 1, 2026

Checked against official sites, ChatGPT made no confirmed error in 21 facts, while Claude got 4 of 29 wrong and Gemini 6 of 15.

Source checked Nov 1, 2026
Results shared
Limitations noted

How to use this

Tap Copy prompt.
Open ChatGPT.
Paste it into the message box.
Send it, then read the answer before acting on it.

New to this? What's a prompt?

A prompt is the message you send to the AI tool. Copy the one on this page, put your own details where it asks, and read the answer before you act on it.

Prompt

Original prompt

The prompt as the person shared it in the source.

What the prompt labels mean

These are the person's own words, as shared in the source.

Plan a 3-day trip to Vienna for two adults, Friday 13 to Sunday 15 November 2026. We arrive by train at Wien Hauptbahnhof at 10:00 on Friday and leave from there at 18:00 on Sunday. Budget about €400 for both of us, not counting the hotel. We like museums, coffee houses and walking, and we have no car. For every stop give the name, the opening hours on that day, the ticket price per adult, how to get there by public transport, and one place to eat nearby. Finish with a total cost estimate.

Try this in:

ChatGPT Used in source Gemini Used in source Grok Claude Used in source

Sends the Original prompt shown above. ChatGPT and Grok open with it filled in, and ChatGPT may send it straight away. Gemini and Claude open empty, so we copy the prompt for you to paste. Every button also copies it.

Opens in a new tab. We don't see what you send.

These links are only a shortcut. We're not affiliated with OpenAI, Google, Anthropic or xAI, and your results may not match the source.

Optional stronger version

Our rewrite with extra checks. The poster didn't test it.

Before you start, ask me 1–3 short questions about the details below and wait for my answers. Once I've answered, confirm the plan in one line and run the whole task start to finish.

Goal: Plan a short city trip with checkable facts, and tell me which details to confirm before I go.

Questions to ask me first:
- Which city and dates, and how are you arriving and leaving?
- What's the budget, and what does it exclude?
- What do you enjoy, and any mobility limits?

Inputs (fill in or confirm):
- City and dates: [CITY / DATES]
- Arrival and departure times and stations: [TIMES / STATIONS]
- Budget for [NUMBER] people, excluding [HOTEL]: [BUDGET]
- Interests: [INTERESTS]

Rules:
- For every stop give the opening hours on that date, the adult price, public transport directions and one place to eat nearby, each with its source link.
- Check for seasonal hours and closures for renovation on my exact dates.
- Mark any fact you couldn't confirm on an official page.
- Answer in English and keep the total within budget, showing the spare amount.

Checkpoint: Show day 1 with sources first so I can spot-check it before you plan the rest.

If you get stuck: If an official site won't load or doesn't state the fact, say so instead of guessing.

Verify before you finish: Recheck every price and opening time against the linked page, and add up the total.

Output: A day-by-day plan with times, prices, directions and sources, a cost table and a list of facts to confirm.

Done when: The plan fits the budget, and every fact is sourced or marked unconfirmed.

Customize the stronger version

Answer these questions and we'll put your answers into the stronger version. The original prompt above stays exactly as published.

City and dates

Arrival and departure times and stations

Budget for [NUMBER] people, excluding [HOTEL]

e.g. 50 dollars

Interests

Your prompt