Anthropic pulled the plug on its Mythos 5 and Fable 5 models after the U.S. Commerce Department slapped new export controls on them. The rules bar any use of those models outside the United States, and Anthropic decided that the only way to comply was to cut access entirely until the export-control question is settled. All other Anthropic models remain available. Elon Musk hit a new high on Friday when SpaceX’s IPO share price jump from $135 sent his net worth past $1 trillion. He first claimed the world’s richest-person title from Jeff Bezos in 2021 with roughly $185 billion to his name. Now he controls wealth equivalent to more than 3 percent of U.S. GDP—about five million times the net worth of a typical American family. On the science front, researchers rolled out a CRISPR-based method that hunts down cells with a common tumor-suppressor mutation—present in up to half of all cancers and 70–90 percent of the hardest-to-treat cases—and destroys only those cells. It moves faster to potential treatments than developing a small-molecule drug, though safe delivery into patients is still a work in progress. Meanwhile, teams in China and Europe each built a functioning nuclear clock using thorium-229. Both tackled the hard-to-generate laser wavelength differently—one with higher power, the other with a denser crystal matrix—to keep time with unprecedented precision. On the developer side, Sentry rolls out a three-part “201” workshop starting June 24, covering integrations, sampling and advanced debugging with traces, logs and metrics. Ponytail, an open-source GitHub project, promises to work with any AI model to produce efficient code at speed and low cost, complete with benchmarks. And a deep dive on agent architecture argues that the true “agent” is the event log itself—recorded history that lets you pause, reconstruct and reason about AI workflows more reliably than runtime or model tweaks alone.