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AI 101 — What are scaling laws?

The Frontier

AI 101 — What are scaling laws?

Scaling laws are the empirical rules describing how an AI model's performance improves in a smooth, predictable curve as three things grow: the size of the model, the amount of data it trains on, and the computing power spent training it. They are not physics — nobody proved them in a lab the way gravity was proven — they are patterns that kept holding every time someone measured them, which is why the entire AI industry now plans around them. The pattern got its canonical statement in a Janua

Pentagon says it has stopped using all Anthropic products

The Guardrails

Pentagon says it has stopped using all Anthropic products

The military's break with Claude is now on the record — and it lands the same week the White House was busy making up with Anthropic's chief executive. The Pentagon "has ceased the use of Anthropic products," a department official said in a statement to the BBC on Monday — the first on-the-record confirmation that Claude is fully out of the US military's AI stack. The cut had been ordered months ago: defense secretary Pete Hegseth designated Anthropic a national-security supply-chain risk on 2

Ghost sells out its first run of a $3,499 personal AI computer

The Arena

Ghost sells out its first run of a $3,499 personal AI computer

A screenless box that does nothing but run your AI agents sold out its first batch hours after preorders opened — while two much bigger money moves landed overnight, one of them entirely on the companies' own word. Ghost, a 19-year-old founder's startup, sold out batch one of Core, a $3,499 screenless computer built for one job: running your personal AI agents. The New York company emerged from stealth on Monday with an $11 million seed led by Andreessen Horowitz, alongside Abstract, Audacious

Five found the same MCP hole — the protocol itself is the problem

The Guardrails

Five found the same MCP hole — the protocol itself is the problem

The agent stack keeps discovering that its plumbing trusts the wrong things — and tonight's lead is a security flaw that five unrelated organizations had to patch separately before anyone called it by name. One vulnerability, five vendors: researchers say MCP's trust model is structurally broken. Independent researcher Syed Anas Mohiuddin has spent four months disclosing what he calls "protocol pivoting" — an attack where an adversary gets in through one protocol, then rides the trust assumpti

Altman says the world must accept AI's 'bad things'

The Guardrails

Altman says the world must accept AI's 'bad things'

A heavy news day for AI governance and open weights: OpenAI's CEO is publicly pricing the trade-off his industry keeps dodging, Reflection finally put specs on the model it teased yesterday, and AMD is trying to set the terms before Nvidia's RTX Spark lands. Altman says the world should accept AI's "bad things" — and the labs' new pact agrees. In an interview released Monday on Politico's Decoded podcast, Sam Altman said OpenAI's position is "we believe that the world should accept some bad th

Today in AI — October 5, 2026

The Arena

Today in AI — October 5, 2026

The day the ecosystem stopped pretending everyone is a partner: Meta and Microsoft quietly cut their Claude budgets, Washington gave AI policy a new name, and New York City put lab executives under oath. Elsewhere, one model learned to drive a robot, and Mac users finally got Apple Intelligence off their disks. Models & Research * Reka AI's Rho-1 collapses the multimodal stack into a single 19-billion-parameter model. The research preview runs text, images, video and robot control as token

OpenAI adds text watermarking to ChatGPT and Codex — EU first

The Guardrails

OpenAI adds text watermarking to ChatGPT and Codex — EU first

Regulation is now shipping inside the product: OpenAI's EU-only watermark rollout lands today, Wikimedia publishes its evidence against OpenAI's agents, and two of Anthropic's biggest customers are easing off Claude. OpenAI is turning on invisible text watermarking in ChatGPT and Codex — starting with the European Union. Over the coming weeks, eligible EU users across all plans will get a machine-readable signal called textGrain woven into the text the model produces, while API customers anywh

Meta raced to patch a VM escape in Muse before launch

The Guardrails

Meta raced to patch a VM escape in Muse before launch

Three stories today share a theme: systems that were supposed to be contained — an agent platform, a preprint archive, a text watermark — all straining at the edges. Meta's own security teams didn't think Muse was ready to ship. 404 Media reports that in the weeks before launch, engineers found several vulnerabilities in the viral agent product, at least one of which could have let a normal Muse user break out of the sandbox and reach sensitive internal Meta databases. The evidence is an inte

The Take — A diary in Claude isn't a written threat

The Guardrails

The Take — A diary in Claude isn't a written threat

I think charging Carli Michelle Heller with a second-degree felony over a sentence she typed into Claude at 5:10 a.m. stretches Florida's written-threat statute past recognition. A message addressed to nobody is not a writing transmitted "in any manner in which it may be viewed by another person" — unless the only person who views it is your chatbot vendor's safety reviewer, and if that is the rule, nothing you type into any moderated app is private anymore. Our morning brief and yesterday's d

Norway's AI glasses ban lands before anyone defined AI glasses

The Guardrails

Norway's AI glasses ban lands before anyone defined AI glasses

Norway will ask parliament for the first national ban on AI glasses in public places anywhere — and the government says up front it has not decided which devices the ban would cover. The scope gap is the story. What Norway is actually proposing Digitalisation minister Torgeir Micaelsen announced Monday that the minority government will send the Storting a bill banning AI glasses in selected public places "as soon as possible." The list in the government's statement covers parks, beaches, mu

Norway moves to ban AI glasses in parks, schools and shops

The Guardrails

Norway moves to ban AI glasses in parks, schools and shops

One parliament is getting a bill about AI glasses, OpenAI is putting ads where you watch it draw, and Cohere is handing enterprises a dial for agent spending. Norway will propose a temporary ban on AI glasses in selected public places — the first national legislative move against the devices anywhere. Digitalisation Minister Torgeir Micaelsen announced the plan on Monday: the bill goes to the Storting "as soon as possible" and would cover parks, beaches, museums, shopping centres, concerts and

Groq engineers sue board over Nvidia's $20B deal

The Arena

Groq engineers sue board over Nvidia's $20B deal

Chip money is colliding with employee equity to start the week — alongside a Cerebras rebound and Europe's newest robotics unicorn. Two former Groq engineers have sued the company in Delaware, alleging the $20 billion Nvidia deal that absorbed most of the company short-changed rank-and-file employees. Benjamin Serebrin and Joshua Rubin filed the suit in Delaware around October 3–4, according to the Financial Times, which first reported it: the claim is that common shareholders "cashed out chea

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