Rakuten Group is expanding its AI team under the stewardship of a Google veteran and building models with a focus on cost efficiency.

Ting Cai, now three years into his tenure at the head of the e-commerce pioneer¡¯s artificial intelligence team, has the task of creating AI systems that would augment the company¡¯s many businesses and support the handling of commercial transactions at a minimal cost. He oversees a team that¡¯s grown to 1,000 this year and has a battery of ¡°thousands¡± of Nvidia chips to work with.

Tokyo-based Rakuten is wrestling with a struggling mobile business and constant competition in online shopping, both of which could get a significant boost from effective deployment of new AI tools. But the emphasis on doing that profitably from early on is where the company stands out from other large tech firms.