UK Prime Minister Rishi Sunak tries to revive Conservative morale with a speech in London, four Chinese generative artificial intelligence start-ups have been valued at more than $1bn in the past three months, and US shale oil companies are under the spotlight over allegations of manipulating prices. Plus, the frontrunner in Mexico’s presidential election is promising more of the same.Mentioned in this podcast:Rishi Sunak to warn Britain ‘at a crossroads’ as he readies Tories for electionUS shale companies accused of collusion over oil priceFour start-ups lead China’s race to match OpenAI’s ChatGPTMexico’s presidential frontrunner defends sweeping legal reformsThe FT News Briefing is produced by Fiona Symon, Sonja Hutson, Kasia Broussalian and Marc Filippino. Additional help by Denise Guerra, Sam Giovinco, Peter Barber, Michael Lello, David da Silva and Gavin Kallmann. Our engineer is Monica Lopez. Topher Forhecz is the FT’s executive producer. The FT’s global head of audio is Cheryl Brumley. The show’s theme song is by Metaphor Music.Read a transcript of this episode on FT.com Hosted on Acast. See acast.com/privacy for more information.