Two agents tracked the same Japan trip and came back $1,000 apart
The poster had Grok Bot and Muse watch the same Japan flight itinerary. Muse's price was more than $1,000 higher, and when he asked why, it said it had searched Duffel, a flight booking service, instead of Google Flights. A good reason to ask any agent where it looked.
The lesson: Ask the agent which sites it searched. Different sources can mean very different prices.
Where this comes from
Original post by @petergyang on X, Sep 26, 2026. We rewrote it in our own words. The result is what the poster reports.
Read the originalCopy-paste setup
Track flights from [CITY] to [CITY], leaving [DATE] and coming back [DATE], in [CABIN], with at most [NUMBER] stops. Check Google Flights and the airlines' own websites, and tell me which sources you checked each time. Message me if the price drops below [PRICE].
Our own prompt, written from what the source describes. We have not tested it yet. Text in [BRACKETS] is what you replace.
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Track flight prices and get told when they drop
You know where and when you want to fly. An agent can watch prices and tell you when it's a good time to book.