Anthropic has shut off access to its Mythos 5 and Fable 5 models. The US Commerce Department has issued a directive that subjects the new models to export controls restricting their use anywhere outside of the US. Anthropic says the only way to ensure compliance is to completely cut access until the issue is resolved. Access to other Anthropic models is not affected.

Elon Musk became the world's first trillionaire on Friday after shares of SpaceX rose 20% from their initial public offering price of $135. Musk was already the world's richest person, claiming the title from Jeff Bezos in 2021 with a net worth of over $185 billion. His worth is now equivalent to more than 3% of the US gross domestic product. It is five million times as large as that of the typical US family.

Researchers have created a new CRISPR-based approach that can selectively destroy cells carrying a mutation in a tumor suppressor found in nearly half of cancers and up to 70% to 90% of cases of some of the most difficult-to-treat cancers. The new approach harnesses CRISPR's ability to find cells with specific mutations and uses its cutting ability to selectively destroy those cells. Making treatments for different cancers using this technique is faster than making a small molecule drug or antibody therapy. Delivery remains a challenge, but a combination of therapies may prove useful for some cancers.

Chinese and European research teams working independently have both achieved building a working nuclear clock. Both exploit the nucleus of a thorium-229 atom to keep time with extraordinary precision. Building a working nuclear clock has so far proven to be challenging, as the required laser light sits in a part of the spectrum that is technically challenging to generate and control. The Chinese team used a more powerful laser, while the European team worked with a crystal containing a higher concentration of the thorium nuclei.

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Ponytail is an AI senior developer. It produces efficient code at low cost and at fast speeds. Ponytail works with every model. Examples and benchmark comparisons are available in the repository.

While the model, runtime, and loop matter, those things aren't the agent. The agent is the history of events that make up its data. This log allows agents to be reconstructed correctly and resumed. The concept of agents as logs unlocks a whole set of capabilities that make even advanced agent use cases easier to reason about and build into everyday applications.

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Meta employees don't think it's a happy place to work at, especially given the seemingly endless layoffs the company has executed over the last few years. The company's Applied AI team is reportedly on the verge of revolt. One of the group's live-streamed, employee-only presentations was interrupted earlier this week with an expletive-laden meltdown targeting a senior Meta AI executive. Many employees in the group say they were forced into the group with no real choice and that the work inside the unit was soul-crushing.

Apple's Siri now works the way it's supposed to. The latest update doesn't do anything revolutionary or innovative, but it shows how Apple has finally entered the modern AI market. The new Siri is roughly competitive with where the leading chatbots were about six months ago. Apple's preinstalled functionality is now competent enough that many users won't need competing AI services.

Vibe coding brought AI into development quickly, but production needs more structure. Agentic engineering embeds AI into workflows with oversight, helping developers build, review and ship software at scale. Dive deeper into the shift

SpaceX President Gwynne Shotwell declined to rule out a future merger with Tesla while tempering expectations about timing.

Building dependable software that lasts and grows will always remain a multiplayer game.

JR Conlin is leaving Mozilla on July 21 after more than 15 years.

Political polarization makes ambitious changes difficult, but inaction would be far more costly.

The market for information is collapsing into the chatbot.

prop-for-that exposes what JavaScript knows, but CSS can't see as live CSS custom properties.