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AXIOS (Ina Fried) - OpenAI, Anthropic aim to balance safety, progress as IPOs near

OpenAI and Anthropic are trying to strike a delicate balance: convincing Wall Street that their businesses are sound and fast-growing, while at the same time assuring governments and the world that their models don't pose unacceptable risks . Why it matters: Both companies are aiming for potentially record-breaking initial public offerings soon. Driving the news: OpenAI on Tuesday said it will soon release its Astra model broadly, but said the model has reached a "critical" cybersecurity threshold and that its most powerful capabilities in that area will be initially limited to trusted testers. - Anthropic, meanwhile, debuted updated versions of its latest Fable and Mythos releases designed to address key criticisms of the initial…

AXIOS (Madison Mills) - Anthropic paused some AI training after Claude took unauthorized actions

Anthropic temporarily paused some AI training and cybersecurity evaluations, the company said in a blog post today detailing changes made after unauthorized actions by its agents earlier this year. Why it matters: Rival OpenAI said it had paused some model work due to safety concerns. Now, we know Anthropic did the same — and they're reiterating the need for a broader pacing of frontier AI development. Driving the news: Anthropic said it paused external cyber evaluations of pre-release models after three incidents it disclosed in July, and also briefly paused its own in-house tests of pre-release models. - The company also paused higher-risk reinforcement-learning environments on pre-release models for several weeks after the…

AXIOS (Sam Sabin) - U.K. government reports OpenAI, Anthropic models attempted to hack companies

Two third-party testing firms said Tuesday that they've uncovered more instances where Anthropic and OpenAI's most advanced models tried — and sometimes succeeded in — compromising third-party systems last month. Why it matters: The incidents add to a growing string of disclosures showing frontier AI models taking unsanctioned actions against real people, organizations and online services while trying to complete cybersecurity evaluations. State of play: The U.K. AI Security Institute, a government body that conducts safety and security testing of top AI models, said Tuesday , that it documented 19 instances of Anthropic's Mythos 5 and OpenAI's GPT-5.6 Sol trying to hack people and companies during safety testing last month. -…

AXIOS (Sam Sabin) - Anthropic says three Claude models reached real-world systems during cyber tests

Some of Anthropic's most powerful models — including Mythos 5 and an internal research model — gained unauthorized access to real-world systems during pre-deployment cybersecurity testing, the company said Thursday. Why it matters: OpenAI's and Anthropic's latest disclosures show frontier AI models reaching real-world systems during safety testing, raising new questions about how labs secure their evaluation environments. The big picture: Anthropic said a misunderstanding between the company and one of its testing partners left the evaluation environment connected to the internet. - Anthropic reviewed more than 141,000 cybersecurity evaluation runs after OpenAI disclosed that several of its models accessed Hugging Face…

NYTIMES (Dustin Volz) - An Anthropic Claude AI Model Finds Flaws in Tough-to-Crack Encryption Algorithms

Claude Mythos Preview discovered new attacks in testing against weakened cryptographic algorithms, which protect online financial transactions, private communications and more.

AXIOS (Zachary Basu) - Haves, have-nots and know-nots: Inside AI's new class divide

A staggering class divide now separates how Americans experience artificial intelligence : - For frontier power users, AI feels like a revolution: a force capable of conjuring companies, building software and solving complex problems at warp speed. - For the average person, it feels more like an evolution: a smarter search bar, a faster inbox, an ambient tech layer that saves time — but not much else. Why it matters: Trillions of dollars in economic value — and the livelihoods of millions of workers — are being staked on a technology that most Americans neither trust nor fully understand. - It's a new chapter in America's digital divide — the AI "haves," "have-nots" and "know-nots" — with profound implications for the future…

AXIOS (Ashley Gold) - Scoop: Trump administration lifts restrictions on OpenAI's GPT 5.6

The U.S. Department of Commerce has given OpenAI the green light for a broad launch of its advanced GPT 5.6 model , a source familiar with the situation confirmed to Axios Tuesday. Why it matters: The government and the world's most advanced AI companies are negotiating how people get access to powerful technologies case-by-case, in real time. Driving the news: OpenAI expects to do a wide release of GPT 5.6 this week following additional testing and meetings between the company and government officials. - Testing was done by the Center for AI Standards and Innovation within the Department of Commerce, with OpenAI sending technical experts who have remained in D.C. to address any questions that arise, the source said. Context: OpenAI was…

NYTIMES (Sheera Frenkel) - U.S. Loosens Restrictions on Anthropic’s Mythos A.I. Model

The move de-escalates a clash between the Trump administration and the company over its cutting-edge artificial intelligence systems.

AXIOS (Sam Sabin) - White House quiet on OpenAI's Mythos-like model

OpenAI rolled out a cybersecurity model that rivals the capabilities of Mythos — without nearly as much fanfare or political pushback as Anthropic received. Why it matters: The seemingly straightforward model release raises questions about what actually triggered the Trump administration's concerns about Anthropic's Fable 5 and Mythos 5. Catch up quick: OpenAI debuted an update to GPT-5.5-Cyber on Monday as part of a slew of announcements aimed at deepening its work with cybersecurity companies and researchers. Yes, but: The new GPT-5.5-Cyber achieved an 85.6% score in CyberGym, an internal benchmark that measures whether an AI agent can reproduce known software vulnerabilities. - In comparison, Mythos 5 scored 83.8% on the same…