Seven stories from roughly the last day. Summaries only; follow the links for the full reporting.
AI jitters hit tech stocks, even as Anthropic shows it can make money
The Nasdaq fell 2.1% on Friday to close its worst week since June, as investors worried about how much of the AI data-center buildout is being paid for with debt. CoreWeave slid nearly 12% on the day and about 24% for the week, and AMD, Intel, Micron and Broadcom each fell between 4.5% and 6%. In the middle of it, Anthropic told prospective IPO investors its Q3 revenue rose to $16.8 billion, up about 45% from Q2, and that it was cash-flow positive and profitable on an adjusted basis; Reuters reports some investors are now discussing a valuation around $1.5 trillion, below earlier hopes, because growth slowed from the prior quarter.
China proposes export controls on its most advanced AI
China's commerce and science ministries proposed adding 23 AI technologies, covering large models, agents, computing clusters and chip design, to the country's list of restricted or banned exports. For models, the curbs would reach weights and source code for systems with at least 2 trillion parameters, very large training runs, or a global top-10 ranking. Open-source releases and published research are exempt, and serving overseas users through APIs, apps and websites stays allowed. A temporary registration requirement took effect immediately, and public comments close November 15.
BeyondTrust remote-support zero-day used by Chinese spies
CISA is urging organizations to patch CVE-2026-102764, a critical (CVSS 9.3) flaw in BeyondTrust Remote Support versions 26.2.3 and earlier that lets an unauthenticated attacker perform file operations and take over the appliance. Mandiant and Google's threat team say a China-linked group tracked as Armory Castle (also UNC5221) has exploited it as a zero-day since late August, planting webshells and deleting logs. BeyondTrust's cloud customers were patched by October 9; self-hosted customers need the BT26-05-RS patch, and anyone older than 24.3.1 must upgrade first.
Claude cracks a decades-old mystery behind NIST's elliptic curves
Anthropic says Claude worked out where the unexplained seeds for five NIST elliptic curves, including the widely used P-256, came from: outputs of the old C random number generator lrand48, started with Unix timestamps from 1997 and 1998. The NSA supplied those seeds without explanation, which fed long-running suspicion of a hidden backdoor. This isn't a break of the curves; if anything it makes a deliberate backdoor less plausible, and cryptographer Filippo Valsorda independently reproduced the result.
Reflection releases Beam, a big open model under a permissive license
Reflection AI published the weights for Beam, a 501-billion-parameter mixture-of-experts model that uses about 23 billion parameters per token and has a 1 million token context window, aimed at coding, reasoning and agent work. It's on Hugging Face under the Apache 2.0 license, which lets companies use, modify and ship it with very few strings attached. Coming a day after Meta's Muse Spark Open, it's another sign the US open-model push is picking up.
ChatGPT adds parallel agents to GPT-6 Pro and launches Slides
OpenAI updated GPT-6 Pro in ChatGPT so it can split a task across several agents working in parallel, showing their progress as they go, along with faster responses and better tool use, for eligible Pro users. It also rolled out ChatGPT Slides, which builds editable, shareable decks from a chat, files or an outline and exports to PowerPoint, PDF or Google Slides, for eligible Pro, Business and Enterprise users.
Tesla's new Roadster drives upside down and briefly flies
At a SpaceX test site in Texas, Tesla revealed its long-delayed next-generation Roadster, which used a suction system to drive upside down and SpaceX-style cold-gas thrusters to lift off, flip and land. Tesla says production starts in 2028, and the thruster-equipped version isn't approved for public roads. It's a spectacle more than a product for now, but it ties Tesla and SpaceX together more visibly than ever.