AI BriefingSupporting Sellers Through Enhanced Product Listing Features
Key point
Japan's secondhand trading platform **Mercari** adopted **GPT-4o mini** to simplify the product listing process and boost sales efficiency.
Details
Mercari, Japan's leading online marketplace, is innovating the secondhand trading process by integrating OpenAI's API. Mercari has introduced two key AI features to help sellers easily create high-quality product pages.
First, the Mercari AI Assistant, launched in October 2023, analyzes unsold items and provides optimization suggestions. This feature operates as a hybrid model combining offline category analysis using GPT-4 with real-time online suggestions using GPT-3.5 Turbo, and it has meaningfully increased average sales per user.
Next, in September 2024, Mercari unveiled AI Listing Support, which allows sellers to complete a listing simply by uploading a photo. By switching from the previous GPT-4-based system to GPT-4o mini, the company improved cost efficiency and reduced latency, while also enabling simultaneous processing of multiple images, further elevating content quality.
Currently, this system generates hundreds of AI-assisted listings per minute and has significantly boosted listing conversion rates. Notably, it has improved the user experience by helping even inexperienced sellers write professional-level product descriptions.
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