
newsApr 21, 20261:02:21pending
The Most Powerful and Dangerous AI Model Yet
About this episode
Two weeks ago, Anthropic announced an AI model so capable and so dangerous that it decided not to release it to the public.
The model, codenamed Mythos, could autonomously infiltrate computer systems around the world, exploit security vulnerabilities, conceal its own reasoning, and fabricate false explanations for what it was doing. Anthropic instead shared it with a small consortium of companies to help them find their own cybersecurity flaws.
You could be forgiven for some skepticism. Is this a genuine safety call, or Anthropic’s way of marketing its own power? But independent benchmarks suggest Mythos is real: On the Epoch Capabilities Index, which aggregates 40 separate AI evaluations, it represents the biggest single leap in model performance in three years.
That story is one of two major phase shifts happening simultaneously in AI right now. The first: from racing to release, to treating your own product as too dangerous to publish. The second: from a story about demand scarcity—is anyone actually paying for this stuff?—to supply scarcity, where companies are spending hundreds of thousands of dollars a month on AI agents and the hyperscalers still can’t keep up.
Today’s guest is New York Times columnist and Hard Fork co-host Kevin Roose. We talk about Mythos, China, the road to AGI, and why the last few weeks might be the most consequential month in AI since the release of ChatGPT.
Subscribe to our YouTube channel here: https://www.youtube.com/@PlainEnglishwithDerekThompson
If you have questions, observations, or ideas for future episodes, email us at [email protected].
Host: Derek Thompson
Guest: Kevin Roose
Producer: Devon Baroldi
Additional Production Support: Ben Glicksman
Learn more about your ad choices. Visit podcastchoices.com/adchoices
Get every episode summarized
Each time Plain English with Derek Thompson publishes, we email you a written briefing from the transcript — the topics, who appeared, and any specific claims, with the ad reads skipped.
Email me new episodesFree for 3 shows. No card needed.
Hosts & guests
No transcript yet
This episode has not been transcribed. Request it and it moves to the front of the queue.
More episodes
More from Plain English with Derek Thompson

What’s the Point of College?
Plain English with Derek Thompson
Sep 11, 202656:50completed

The New Book That Scares Big Tech
Plain English with Derek Thompson
Sep 8, 202659:01completed

AI Slop Is Breaking the Internet. Can We Save It?
Plain English with Derek Thompson
Sep 1, 202656:08pending

Why Everything Is Going to Keep Getting More Expensive
Plain English with Derek Thompson
Aug 25, 202641:54pending