Chinese technology is making headlines with the rise of DeepSeek, an AI chatbot that has surged to the top of US app downloads. Its development cost is reportedly lower than Western alternatives, and its open-source nature raises both innovation and security concerns. Shirin Ghaffary, AI reporter at Bloomberg, Ciaran Martin, former Head of Cybersecurity at GCHQ, and Kathrin Hille, FT Greater China correspondent, discuss the impact.

The Excel World Championships bring spreadsheets into the realm of competitive gaming. Hosted in Las Vegas, the event sees contestants solving complex data challenges in front of a live audience. Robert McMillan, reporter at The Wall Street Journal, describes the atmosphere of the event and assesses whether Excel really has evolved from office tool to esport.

Presenters: Ros Atkins and Katie Razzall Producer: Simon Richardson Assistant producer: Lucy Wai