Google DeepMind unveiled Genie 4, a real-time world model with sound, and Anthropic disclosed that it bought Mithril Medicine, a one-person drug company. Investors are also split over the 85 percent margin implied by Anthropic's IPO filing, and the quick hits cover OpenAI and Google's TPUs, record results at SK Hynix and Trump's plan to ban the term AI. Google DeepMind unveils Genie 4 world modelGenie 4 keeps a scene consistent for about two minutes, makes its own sound and runs with Gemini 3.8 Flash alongside it, but details drift in longer sessions and only trusted testers can use it for now.Google DeepMind · TechCrunch · Hacker News · The New Stack · Video Games Chronicle Anthropic bought Mithril Medicine, a one-person drug startupFounder Cody Tranbarger used Claude to run 11 outside labs and took an antibody for a rare muscular dystrophy to early mouse results, which were not randomized, and Anthropic says human trials could start as soon as late 2028.Anthropic · Reuters (via The Star) · ScienceDaily (PLOS Biology release) OpenAI plans to buy Google's TPU chipsThe Information reports, citing one unnamed source, that OpenAI plans to buy TPUs, and OpenAI has an open job posting for an engineer to speed up its frontier models on TPUs.Reuters (via Investing.com) · OpenAI Physical Intelligence in talks at about 20 billion dollarsBloomberg reports that the robot AI startup is in early talks to raise at least 1 billion dollars at a valuation of about 20 billion, which would nearly double its valuation, even though it has no revenue.Investing.com · Physical Intelligence Axiom formalizes the Classification of Finite Simple GroupsAxiom says its AI agents wrote 43 million lines of Lean with no gaps and found a flaw in one published argument.Axiom · GitHub (AxiomMath) SK Hynix reports a record third quarterRevenue more than quadrupled to about 79 billion dollars, with an 80 percent operating margin, and the company expects memory shortages to last through 2030.SK hynix Newsroom · Seoul Economic Daily Anthropic hiring manager drops the coding interviewFelix Rieseberg says Claude is now better at coding tests and tells junior engineers that drive matters more than seniority.Felix Rieseberg (personal blog) Essay: AI agents brought more workOrestis Ioannou of Bold.org writes that cheap code makes it easy to take on far more work and that reviewing many agents is tiring.O. Ioannou · Hacker News Trump says the US will ban the term AITrump's Truth Social post came with no new order, and a September order already defines Super Intelligence as exactly what the law calls AI.The Hill · The White House Investors split over Anthropic's IPO filingBulls point to an 85 percent gross margin on serving paying customers, while bears point to tangled partner ties, revenue growth that is slowing and more expensive compute ahead.SEC (Anthropic S-1) · Techmeme (summarizing The Information) · Business Insider (via AOL) · CNBC The most important news from Silicon Valley and AI. 15 minutes, every weekday morning. Transcript Good morning. It's Wednesday, October 28, and this is the Valley Morning Briefing. Today: Google DeepMind unveiled Genie 4, its new real-time world model. Anthropic disclosed that it bought a one-person drug company in July. Investors are arguing over an 85 percent margin in Anthropic's IPO filing. Let's start with Google. On Tuesday, Google DeepMind unveiled Genie 4, a world model that builds an interactive scene frame by frame as you move through it. Genie 4 keeps a scene consistent for about two minutes. That is twice as long as Genie 3, which came out a little over a year ago. It is also DeepMind's first real-time world model that makes its own sound. Every world has background noise, and characters can talk and react to what you do. You move with the keyboard. You can also type changes while the world keeps running, such as new weather, a different camera angle or a new person. While Genie 4 generates a world, a Gemini model now runs alongside it. Gemini 3.8 Flash watches the scene and breaks a goal into steps. It checks the new frames to see whether each step worked, and it changes the plan when you step in. Tejas Kulkarni, a research director at DeepMind, told reporters that the field is moving toward hybrid world models like this one. In that setup, Gemini produces the code and the text, and Genie builds the running scene from them. Demis Hassabis, DeepMind's CEO, called it "simulations within simulations". Google offers Genie 4 for film previews, game prototypes and robot training. In one demo, a model called Gemini 4 Argon plans a game of checkers for Apptronik's Apollo humanoid robot, and Genie 4 simulates the game. DeepMind calls this an experiment, and it has not said it trains robots on Genie 4 yet. Project Genie, Google's tool for generating playable worlds, rolled out in January. The next day, Unity's shares fell as much as 35 percent. DeepMind's own post says details can drift, especially in longer sessions. Early users found the same thing. The AI tools commentator Matt Wolfe wrote that a Mustang had changed direction by the time the camera turned back to it, and later it became a taxi. On Hacker News, engineers went through Google's own demos. In the dragon flight, a second castle appears when the camera looks left, and a square tower becomes round. One commenter wrote that Genie 4 is very good at keeping things consistent while they stay in frame, but that this does not show a strong world simulation. Others replied that robot training does not need perfect realism. Amanda Caswell of The New Stack says this complicates tests of AI agents. When an agent fails in a simulated world, it is hard to tell whether the agent or the simulation was at fault. Google has published no benchmarks on this, including on whether the same prompt gives the same result twice. For now, only trusted testers can use Genie 4, and Google has not announced a price. It says Google AI Ultra subscribers and some API partners will get it in the coming weeks. Anthropic disclosed on Tuesday that it bought Mithril Medicine, a drug startup with a single full-time employee. Mithril's work is now Anthropic's first in-house drug program. The deal closed in July, and Anthropic gave no price. Mithril's founder, Cody Tranbarger, worked in biotech business and operations, at the gene-editing company Prime Medicine and at the venture firm Atlas Venture. He used Claude to manage contracts, logistics and experiments with 11 outside labs. Eight paid consultants and advisers helped with the science, and contract labs did the bench work. In under 18 months, Mithril took an antibody for a rare childhood form of muscular dystrophy from an idea to results in mice. Anthropic's own technical report lists the limits of those results. Seven mice got the highest dose. They had about twice the grip strength of the four untreated mice that were still alive. But the mice were not randomized. The two groups were also tested four to five months apart, after the colony had moved. The report, which is not yet peer reviewed, calls for a blinded repeat. It also lists Claude's mistakes. At least three of them reached outside labs, in emails that people had edited and sent. A 2024 review in PLOS Biology found that only about 5 percent of therapies tested in animals ever win approval. The company also published results from six partners. At the biotech Enveda, Claude reviewed more than a thousand pages of manufacturing records. It caught all 11 problems that human reviewers had found, plus seven they had missed. Bristol Myers Squibb uses Claude to plan clinical trials. Michael Pourdehnad, who leads early clinical development there, said Claude produced, from a single prompt, an analysis that would otherwise take days. Anthropic sells Claude to big drugmakers, including Bristol Myers Squibb, Genentech and Novo Nordisk. In September, Anthropic's head of life sciences, Eric Kauderer-Abrams, told Reuters that Anthropic was not running clinical trials for now, partly because of competition concerns. He said: "We're not competing with pharma and biotech companies that make their business in bringing drugs to market." Two people familiar with the effort told Reuters that customers may worry Anthropic will learn from their drug programs. Anthropic's new post does not say who would run trials for Mithril's drugs. On X, some commentators called Mithril the one-person company that Sam Altman predicted. Others pointed out that the news came one day after Anthropic's IPO filing went public. Tranbarger now works at Anthropic and plans several new programs. Anthropic says that if his drug candidates hold up, a drug could be ready for human trials as soon as late 2028. Now, the quick hits. The Information reports, citing one unnamed source, that OpenAI plans to buy Google's TPU chips. The report gives no size or price, and OpenAI declined to comment. OpenAI also has an open job posting for an engineer who would be in charge of speeding up its frontier models on TPUs. The company is one of Nvidia's biggest customers, and it began renting Google's chips last year. A purchase would make Google a chip supplier to OpenAI and Anthropic. Bloomberg reports that Physical Intelligence, which builds AI models for robots, is in early talks to raise at least 1 billion dollars at a valuation of about 20 billion. That would nearly double its valuation from earlier this year. Its new API for outside developers drew interest from investors. The company has no revenue. Its rival Skild AI is valued at 14 billion dollars, and it says its annual recurring revenue passed 100 million dollars. Axiom, an AI math startup, says its AI agents have formalized the Classification of Finite Simple Groups in Lean. About a hundred mathematicians wrote that proof over several decades. The Lean code is 43 million lines long, and Axiom says it has no gaps. Axiom also found a flaw in one pub