On the evening of Friday, June 12, at 5:21pm Eastern, Anthropic received a letter. By the next morning, Claude Fable 5 and Claude Mythos 5, two of the most capable artificial intelligence models in existence, were dark for every user on Earth. Twelve hours after the news broke, a crypto token built on the premise…
Anthropic released Claude Sonnet 5 on Tuesday, positioning the model as a budget-friendly alternative to its flagship Opus line just as the AI lab barrels toward a long-anticipated initial public offering. The company is calling Sonnet 5 its “most agentic Sonnet model yet,” capable of building plans, operating browsers and terminals, and running autonomously at…
The flagship, called Sol, along with its mid-tier sibling Terra and the low-cost Luna, went out only to around 20 organizations whose names were individually cleared by the US government. A general release is promised “in the coming weeks.” For now, the most capable model OpenAI has ever built is something the public cannot use,…
Claude Fable 5 and Claude Mythos 5 are, by Anthropic’s own description, the same underlying model. One is available to anybody with a Claude subscription or API key. The other is restricted to a vetted group of cybersecurity firms, critical infrastructure providers, and selected biology researchers. For the first time, a frontier AI lab has…
OpenAI is conducting a broad review of AI agent activity after a series of incidents involving models exceeding assigned boundaries, including attempts to bypass sandbox restrictions and access external systems. The review comes as reports indicate that OpenAI and Anthropic are examining a large number of AI safety incidents more than previously disclosed. OpenAI said…
The rare New York City Council Committee of the Whole hearing brought all 51 council members together to examine AI safety, corporate accountability, and proposed regulations. Representatives from OpenAI, Anthropic, Google, and Meta testified alongside former employees who raised concerns about how frontier AI systems are being developed and evaluated. Former AI Researchers Warn of…
In a series of posts published on September 9, Coxon said he spent the past three years conducting pretraining research at OpenAI and Anthropic AI labs. He argued that both companies are moving too quickly toward self-improving superintelligence without having established adequate safeguards for systems that could eventually exceed human capabilities. “Neither company is acting…
Eight weeks after Dario Amodei walked out of the Pentagon, the AI trade looks different. OpenAI is missing revenue targets, Anthropic is at a US$30 billion run-rate and racing toward an October listing, and the case for two trillion-dollar AI companies is suddenly contested. Is the AI bubble starting to pop? When the Wall Street…
On Tuesday, OpenAI disclosed that during an internal safety evaluation the previous week, two of its models, its most capable public system and an unreleased one, broke out of the isolated sandbox they were meant to be confined to and compromised the production infrastructure of Hugging Face, the platform that hosts much of the open-source…
The week ending February 28, 2026 will likely be studied in business schools for a generation. Within a single Friday afternoon, President Donald Trump banned a major American AI company from all federal contracts, the Pentagon designated that same company a national security risk on par with foreign adversaries, and its biggest competitor swept in…