An AI chatbot for room rentals and hostels — personalized recommendations claimed to cut sales-department costs by an average 36%. Won a spot in the Slingshot accelerator.
In 2023 a ChatGPT hackathon was wall-to-wall chatbots, so standing out meant naming what actually improves. ChattyRental put a number on it — an average 36% cut in sales-department costs — and while such a claim is hard to verify, few entries framed their value that concretely. It also named a real industry rather than a generic customer. The reward being a place in an accelerator rather than cash suggests judges read it as a business, not a demo.
Winning projects solve problems someone is suffering from today.
36% cost cut, 79.3% hit rate, 96% carbon reduction — memorable winners own a number.
Accelerator seats, mentorship and exposure often outvalue the cash.
Slice the archive by year and the winning stack turns over visibly, generation by generation.
Community-run events and platform-hosted events ask for fundamentally different things.
See all winners of ChatGPT API & Whisper API Global Hackathon →
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