The stock market plummeted this week after a Chinese company showed it could do more with less. Today, we talk about the new AI chatbot DeepSeek, and why people are freaking out about it – from Silicon Valley to Wall Street to Washington.

Crowded airspace and D.C.'s deadly plane crash

Post Reports is the daily podcast from The Washington Post. Unparalleled reporting. Expert insight. Clear analysis. Everything you’ve come to expect from the newsroom of The Post, for your ears. Martine Powers and Elahe Izadi are your hosts, asking the questions you didn’t know you wanted answered. Published weekdays around 5 p.m. Eastern time.