AI Hallucination

You might say

This AI travel guide sounds confident, but I do not want to trust the opening hours. Research the official website or reservation page online and include the source link and update date.

An AI hallucination is information a model generates that looks credible but is inaccurate, unsupported, or invented.An AI can invent venue hours, a nonexistent link, an outdated rule, or a function that is not in a project. Fluent wording is not evidence. An Agent can research changing external facts online, but conclusions still need official or original sources, tool results, tests, and human judgment.

Know first

AI Application Basics

Hallucination

How an opening time in an AI guide gets verified

Sample AI travel guide · unverified

“The city museum is open until 10 PM on Mondays. Go at night to avoid crowds.”

opening time needs checking

MON · 8:00 PMIt is already in the itinerary, but no official hours were checked.

How to verify facts in a travel guide

A model generates; it does not inherently collect evidence: A model is good at organizing language from patterns, but can fill gaps with plausible details when context is missing, material is outdated, or no single answer exists.

Online research must lead to primary sources: For changing external facts such as opening hours, policies, or prices, an Agent can research online. Open the official site, announcement, or original file, then check publication date, applicability, and whether independent sources agree. A search summary or secondary repost alone leaves the claim uncertain.

You can say this to an AI Agent

My family will use this AI-generated travel guide. Research every venue's opening hours and reservation rules online, prioritizing official websites, announcements, or reservation pages. Include the source link and publication or update date. Mark claims supported only by search summaries, secondary reposts, or no original source as uncertain, and do not invent links. Remove closed or unavailable visits after checking.

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AI says the city museum is open until 10 PM on Monday and puts it in the evening itinerary. What is the best action?

A. Keep asking the same AI if it is sure without checking another sourceB. Research the museum's official website, official reservation page, and daily sessions online, then check the date before keeping it in the itineraryC. Follow the guide because it includes a specific time