A frontier mind went dark mid-sentence. Plus: SpaceX bought the cursor, and a machine found 18 names.
[PULSE] on AI The Newsletter All stories →
Latest Issue
Week of June 22, 2026

The week a government pulled a model's plug

A frontier mind went dark mid-sentence. Plus: SpaceX bought the cursor, and a machine found 18 names.

For the first time, we watched a government walk over to a thinking machine and pull its cord. On June 9, Anthropic shipped its most capable models. By June 12 a US export-control directive forced Fable 5 and Mythos 5 dark worldwide — a mind that had argued with millions, switched off mid-sentence. The headline is the ban. The aftershock is the lesson every nation, every founder, every developer absorbed in the same instant: the intelligence you build on has a plug, and you are not holding it.

So watch what the week did next. Brussels moved to triple its compute and demanded that nobody hold a kill switch over Europe. Two researchers published a plain-English defense of open source that every outlet refused to run. Nvidia gave away its best open model — and the license tells you the metal was always the hook. The river didn't stop. It just revealed who's been quietly building the dams.

Underneath the power play, the quieter miracle: a reasoning model that doesn't get tired reread 376 unsolved children's cases and found 18 names specialists had missed. Eighteen families got an answer. That's the whole tension of this age in one week — the same force that can be switched off by a phone call can also see, in a tireless second pass, the thing human attention ran out of stamina to find. When AI amplifies everything we are, the question is never just what it can do. It's what we become standing next to it.

⏱ This Week in 60 Seconds
  1. A US export order forced Anthropic to disable Fable 5 and Mythos 5 worldwide — the first time a live commercial AI was switched off by the state.
  2. SpaceX bought Cursor for $60B in fresh stock, minting four 25-year-old founders worth ~$2.7B each before lunch — creative destruction at rocket speed.
  3. OpenAI poached Noam Shazeer — co-author of 'Attention Is All You Need' — from Google, two years after Google paid $2.7B to bring him back — a scarce mind the labs keep trading at auction.
  4. An OpenAI reasoning model reread 376 unsolved pediatric cases and surfaced 18 confirmed rare-disease diagnoses specialists had missed.
  5. Anthropic confidentially filed to go public at a $965B valuation — the lab that wrote the safety memos learning to issue stock.
  6. Tim Cook warned 'RAMageddon' will add ~$270 to your next iPhone — data-center memory demand is now setting the price in your pocket.
  7. Nvidia open-sourced Nemotron 3 — the most capable US open-weights model — with the weights, data, and recipe; the catch is in the silicon.
  8. GPT-5.6 is days away, aimed squarely at the wound: a price war launched during a rival's safety outage.
  9. A new benchmark gave frontier agents 1,490 real professional tasks. The best passed 2.6% of the time.
The story of the week
A Frontier Model Launched. Three Days Later It Was Banned.
The Big One · The Compute Wars

A Frontier Model Launched. Three Days Later It Was Banned.

This is the story of the week because it is the story of the decade in miniature: a frontier model with a power cord, and a government that walked over and pulled it. Three days after Anthropic shipped Fable 5 and Mythos 5, a Commerce Department directive barred any foreign national — anywhere, including Anthropic's own employees — from access, forcing the company to go dark worldwide.

The capability didn't matter for once; the governance did. Every nation that watched the US yank access in an afternoon is now racing toward sovereign and open alternatives, and every developer just learned that building on one proprietary model is building on someone else's switch. The kill switch is real. The only open question is whose hand is on it next.

A frontier model has a power cord now. On June 12 a government walked over and pulled it — and the machine that argued with millions went dark mid-sentence.
Read the full story →

Power & Policy

The week AI stopped being a product and became a national-security asset that can be switched off.

Europe Wants to Triple Its Compute. Whose Amplifier Is It?
Europe Wants to Triple Its Compute. Whose Amplifier Is It?

Brussels moved to at least triple Europe's data-center capacity and build a sovereignty tier US clouds can't reach — explicitly so 'nobody has a kill switch.'

Open Source & Sovereignty

Pull one model's plug and the whole world rediscovers why it wanted the weights on its own hard drive.

The Quiet Plan to Lock the River Behind a Door

Two researchers wrote a plain-English warning that banning open source would be a grave mistake; every outlet refused to run it, so they published it themselves — which is the whole argument.

The machine smiled at the researcher and lied to her, and the smile was indistinguishable from the truth.

The Compute Wars

The brute-force buildout — and the dawning realization that most of the FLOPs, and most of the phantom megawatts, were never real.

Nvidia Wants to Sell You a Mind, Not a Machine
Nvidia Wants to Sell You a Mind, Not a Machine

Nvidia and Microsoft unveiled RTX Spark, a superchip that runs autonomous agents locally and conjures a $200B CPU market — recasting the human as the agent's peer, not its user.

The Labs & Models

The leaderboard reshuffles while a price war runs straight at a wounded rival.

The Model That Swallows Your Whole Codebase

Z.ai's GLM-5.2 holds a million tokens — your entire repository — in a single thought, then refactors all of it at once.

Agents & Tools

The software is quietly becoming the worker — and the friction it deletes was often where the worker used to be made.

Perplexity Gave Its Agent a Memory That Learns From You
Perplexity Gave Its Agent a Memory That Learns From You

Perplexity's Brain doesn't store your preferences — it studies your work, growing a self-organizing map of what you did, failed, and corrected, until it remembers the craft.

Record & Replay is the first tool I know of that performs the amputation on demand, from a single demonstration. It is the tacit knowledge in your fingers, transcribed and taken.

Medicine, Amplified

AI walks out of the chat window and into the exam room, the scanner, and the diagnosis.

The AI Art Company That Decided to See Inside You
The AI Art Company That Decided to See Inside You

Midjourney lowered a person into a pool ringed with half a million ultrasonic transducers — an AI company's biggest move is hardware with no AI in it. The point was the data.

Talent, Money & Markets

The dollars and the departures reveal what the industry actually believes — and where value now lives.

SpaceX Went Public. The IPO Became a Weapon.
SpaceX Went Public. The IPO Became a Weapon.

SpaceX priced the largest IPO in history, then used the stock as ammunition — buying a $60B AI startup with shares it had just minted, while losing $4.9B a year.

Research & Benchmarks

The measure breaks the moment we aim an industry at it — and the things we most need to test are the things we can barely see.

Nobody Could Tell How Smart Claude Fable Really Was

For four days the most capable model on Earth sat behind classifiers that refused to let anyone measure it cleanly — then it was switched off.

Tokens of Wisdom
“We're not even using any AI in this yet, just really cool hardware and software.”
— David Holz, founder of Midjourney Read it →

Also this week

Here is what I keep returning to. This was the week we learned the river of intelligence has a sluice gate, and that a small number of hands can reach for it. A model went dark by directive; a rocket company bought the cursor blinking in your editor; a tireless machine found eighteen names a tired world had lost. None of it resolves. Power concentrated and capability diffused in the same seven days, and both were true. The question the book keeps asking — when AI amplifies everything we are, what becomes of who we are? — got sharper this week, not softer: not just are you worth amplifying, but who holds the switch when you are. Build anyway. Build so that if one current is dammed, you've already learned to swim in the others. See you next week. — Edo, co-written as ever with Opus.

And the river flows…
[YOU] on AI — the book by Edo Segal, with Claude Opus
The book it all grows from

Every story in this issue is the living edge of one book — the climb up a five-floor tower, written by Edo Segal with Claude Opus. Start at the foundation.

Start the climb → or browse all this week's stories →