LY Corp bets big on OpenAI, aims for 800K saved hours and ¥110B in new sales

LY Corporation, the Japanese tech giant behind LINE and Yahoo! JAPAN, isn’t dabbling in generative AI—it’s going all-in. With over 200 million monthly active users across its platforms, the company has partnered with OpenAI to reimagine everything from how millions of people search for restaurants to how its own employees access internal data. The scale here is genuinely massive. LINE isn’t just a messaging app in Japan; it’s infrastructure. And now, LY is layering GPT-4o directly into that daily flow with the LINE AI Assistant, a tool designed to feel less like a query box and more like a friend in your chat list.

What’s more interesting than the consumer-facing features is the hard productivity math LY Corp is putting behind this. The company isn’t just chasing ‘WOW’ moments—it’s tracking hours. Their internal tool, SeekAI, uses RAG to sift through internal documentation and databases. The projected payoff? An estimated 700,000 to 800,000 working hours saved annually. That’s not a vague promise of efficiency; that’s a line item you can take to the board. Mr. Gen Miyazawa, who leads the Generative AI Group, frames the speed of adoption as a deliberate strategy, comparing the current moment to the dawn of the internet when moving fast and trying things was the only way to learn.

That speed, however, required a serious conversation about safety. LY Corp hammered out clear guarantees with OpenAI: zero data retention, no training on employee inputs, and no secondary use of data. It’s a crucial detail that often gets glossed over, but it’s the foundational trust that lets a company with this much sensitive user data deploy AI across 32 different use cases as of December 2024. The external applications are equally sharp, using GPT-4 to summarize reviews on Yahoo! JAPAN Search and even auto-generate travel plans, directly attacking the decision paralysis that plagues online shopping and trip booking.

LY Corp is now forecasting a direct revenue impact from these AI integrations, projecting annual sales increases of ¥110 billion. When a company that already touches a huge chunk of Japan’s internet-connected population starts connecting AI to the bottom line with that kind of specific figure, it’s worth paying attention. The bet here is that embedding AI into services people already use daily—without making them jump to a separate chatbot—is the real path to both user satisfaction and serious growth.