STAT+: What is a ‘world model’? Nabla’s Alex LeBrun explains

STAT PlusNewsletterAI Prognosis What is a ‘world model’? Nabla’s Alex LeBrun explains You’re reading the web edition of STAT’s AI Prognosis Manage alerts for this article Email this article Share this article By Brittany TrangJuly 22, 2026 Health Tech Reporter Brittany Trang[email protected]Brittany Trang, Ph.D., covers AI in health and medicine: Does it actually work? Who benefits, or might be harmed? She writes the weekly AI Prognosis newsletter. Follow her on Threads, Mastodon, and Bluesky. You can reach Brittany on Signal at btrang.01. You’re reading the web edition of STAT’s AI Prognosis newsletter, our subscriber-exclusive guide to artificial intelligence in health care and medicine. Sign up to get it delivered in your inbox every Wednesday. Every time I interview someone from an AI scribe company, I ask if it’s OK to record the interview for my notes and make a joke about the ironic situation.Advertisement Turns out, not everyone is asking, and people have started to record their daily conversations, such as first dates, without asking. “This Conversation is Being Recorded. They All Are” is the Wall Street Journal’s headline. What a hellscape. STAT+ Exclusive Story Already have an account? Log in This article is exclusive to STAT+ subscribers Unlock this article — plus in-depth analysis, newsletters, premium events, and news alerts. Already have an account? Log in Monthly $39 Totals $468 per year $39/month Get Started Totals $468 per year Starter $30 for 3 months, then $399/year $30 for 3 months Get Started Then $399/year Annual $399 Save 15% $399/year Get Started Save 15% 11+ Users Custom Savings start at 25%! Request A Quote Request A Quote Savings start at 25%! 2-10 Users $300 Annually per user $300/year Get Started $300 Annually per user View All Plans To read the rest of this story subscribe to STAT+. Subscribe Log In Artificial intelligence, health tech, STAT+ Submit a correction requestReprints Brittany Trang Health Tech Reporter Brittany Trang, Ph.D., covers AI in health and medicine: Does it actually work? Who benefits, or might be harmed? She writes the weekly AI Prognosis newsletter. Follow her on Threads, Mastodon, and Bluesky. You can reach Brittany on Signal at btrang.01. Newsletter Tech is transforming health care and life sciences. Our original reporting is here to keep you ahead of the curve. Recommended AI Prognosis July 15, 2026 STAT Plus: The whistleblower, The Lab, and the fine print AI Prognosis July 1, 2026 STAT Plus: The moment Anthropic convinced me it’s serious about science Advertisement AI Prognosis June 24, 2026 STAT Plus: A dispatch on AI from BIOtech’s big summer bash AI Prognosis June 17, 2026 STAT Plus: Is Abridge’s ‘patient centered’ claim a bridge too far? AI Prognosis June 10, 2026 STAT Plus: Your sepsis algorithm shouldn’t require a time machine Subscriber Picks