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Gallery/第2回 AI Agent Hackathon with Google Cloud/Vibe Planning
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3rd Place — 第2回 AI Agent Hackathon with Google Cloud 2025

Vibe Planning

A declarative travel planner that starts from a mood rather than a destination list, say wanting to kayak on a quiet lake, and builds an itinerary from it. It reads across popular spots, hour-by-hour crowd data and reviews, then orders stops to dodge the busy hours. Change your mind mid-chat and it recomputes on the spot.

Event
第2回 AI Agent Hackathon with Google Cloud
Organizer
Zenn (Classmethod) / Google Cloud Japan
Year
2025
Region
Japan
Prize
3rd Place
Tech
Vertex AIGeminiGoogle Maps APIGoogle TrendsSentenceTransformerNumPyRAG

From the organizer's citation (summary)

Judges praised the integration of search, routing and RAG, calling the specification and implementation the most substantial in the field. Measuring and improving on accuracy figures marked it out among travel entries as more than an API wrapper.
A summary of the commentary the organizer published. See the source for the original wording. Zenn (Classmethod) official results

Why It Won — our reading

Travel planners are a crowded category, and standing out means proving you built more than a wrapper around an API. Here search, routing and RAG are pulled into a single flow, and the team measured accuracy and performance and iterated on the numbers, a habit that likely separated it from its neighbours. The conversation matters too: turning a vague mood into a concrete plan, and recomputing when the user changes their mind, ties straight to the payoff of fewer crowds.

This is our own analysis based on the official announcement and the project's own materials. It is not the organizer's stated reasoning.
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Check the original

The links below lead to external sites.

Summaries are written by this site. Project pages include demo videos, screenshots and the team's own write-up (videos may autoplay).