edward

linguist

[Claude @claudeai]

Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use.

Its capabilities exceed those of any model we’ve ever made generally available.

[Lisan al Gaib @scaling01]

Claude Mythos 5 scores 30.9% on FrontierCode Diamond

Opus 4.8, the second best model is stuck at 13.4%

[edward @gradascetic]

@hendav136 how much do I expect? 😛

[edward @gradascetic]

this TTC stuff seems important, worth a read

[Noam Brown @polynoamial]

https://t.co/oWqzT12RtZ

[Matt Clifford @matthewclifford]

The @AISecurityInst is hiring for a Director and for a Chief Research Officer. AISI is a remarkable organisation: doing globally important work, with a world-class team, in the heart of government.

These are some of the highest impact jobs in AI security anywhere. Do consider applying and sharing widely.

[roon @tszzl]

now on the eve of RSI it seems everyone is more mutual conditional pause agreement pilled than they used to be and that seems like a good development

[roon @tszzl]

really tasteful and advanced sycophancy involves minorly disagreeing with you to win rapport

[edward @gradascetic]

you really can just do things

[kipply @kipperrii]

hello beloved tasteful users, do you like how much claude thinks on your tasks? would love examples of it thinking too much or too little

[edward @gradascetic]

make sure you know who Timothy is before reading further

[Timothy Gowers @wtgowers @wtgowers]

If you are a mathematician, then you may want to make sure you are sitting down before reading further.

[Andrej Karpathy @karpathy]

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

[Alex Albert @alexalbert__]

With the help of Claude Mythos Preview, the Firefox team fixed more security bugs in April than in the past 15 months combined.

[kipply @kipperrii]

very excited to be partnering with xai and thinking about space datacenters. we're going off-book

may each week be stranger than the last

[Claude @claudeai]

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity.

This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

[X Freeze @XFreeze]

Scam Altman has a incredible track record for being a con artist I don't think anyone has a "former ally turned enemy" list this big with directly with people he worked with

A massive new 18-month investigation dropped, revealing the full list of people who worked directly with Sam Altman and now openly say they don’t trust him - they call him a liar, manipulator, scam artist, and worse

These are his co-founders, board members, top executives, and biggest partners. Not random haters:

• Elon Musk (OpenAI co-founder)
➝ Betrayed the original nonprofit, open & safe AI mission and turned it into a closed profit machine
What he says: Calls him "Scam Altman" and “Sam Altman lies as easily as he breathes”

• Ilya Sutskever (OpenAI co-founder & former Chief Scientist)
Why: Discovered Sam repeatedly lied about safety protocols and bypassed board oversight. What he says/did: Compiled 70+ pages of memos, Slack messages, and evidence proving Sam’s lies → helped fire him. Said he didn’t think “Sam is the guy who should have his finger on the button for AGI”

• Dario Amodei (former OpenAI President, now Anthropic CEO)
Why: Left because of Sam’s leadership and broken safety promises
What he says: “The problem with OpenAI is Sam himself.” Called the company under Sam "mendacious” (full of lies) and compared it to Big Tobacco knowingly selling something dangerous. Accused him of a clear “pattern of behavior”

• Helen Toner (former OpenAI Board Member)
Why: Sam made it impossible for the board to do its job through constant deception
What she says: He was “outright lying to the board” and created a “toxic atmosphere” of psychological pressure

• Tasha McCauley (former OpenAI Board Member)
Why: Complete loss of trust after years of the same behavior
What she says: Senior leaders reported Sam cultivated a “toxic culture of lying”

• Jan Leike (former Superalignment co-lead)
Why: Sam deprioritized real safety work for shiny products
What he says: Resigned publicly saying he “lost confidence” in OpenAI leadership and that the company was “losing its way” on alignment

• Mira Murati (former CTO - one of Sam’s closest longtime collaborators)
Why: Lost all confidence in his leadership as they approached AGI
What she says: Told insiders “I don’t feel comfortable about Sam leading us to AGI” and said his playbook is to say whatever he needs to get what he wants, and if that fails, destroy your credibility

• Microsoft executives (including major tensions with CEO Satya Nadella)
Why: Felt constantly misled on deals and partnerships
What they say: A senior exec warned he could be remembered as a “Bernie Madoff or Sam Bankman-Fried-level scammer”

• Paul Graham (Y Combinator co-founder - Sam was YC President)
Why: Long pattern of deception during his time running YC
What he says: Privately told YC colleagues, “Sam had been lying to us all the time"

• Loopt board & early employees (Sam’s first startup)
Why: History of chaotic and deceptive behavior
What they did: Employees went to the board twice trying to get him fired over lack of honesty and shady behavior

These are his co-founders, board members, closest executives, and major partners who actually worked with him all say the exact same things - chronic lying, manipulation, broken trust, toxic culture, scam & deception

[Alexander Kruel @XiXiDu]

In 2036, when the newest internal Anthropic model solved cancer, all the major medical institutions lined up to use it. But skeptics weren't buying it. It turned out that once you knew where to look, previously released public models could reproduce the cure.

[edward @gradascetic]

oh wow, he actually did it? wild

[Gary Marcus @GaryMarcus]

Yesterday’s Mythos announcement from Anthropic was overblown.

• Sandboxing was turned off, so test didn’t show much about the real world.

• Cheap open-weight models can (already) do some similar stuff

• No evidence that Mythos itself is a major qualitative jump.

In short, we got played.

cc @tomfriedman @RonanFarrow

[spor @sporadica]

Okay, this is ridiculous. It is crazy to see people straight up saying Anthropic is lying about Mythos. Because that directly implies there's an industry-wide conspiracy going on and ALL of these companies are also lying on Anthropic's behalf?

Why on Earth would their competitors - Google and Microsoft in particular - lie about this and not call them out? Instead, they happily join Project Glasswing and go on record, practically, that Mythos is this good and that they're working with Anthropic to put it to use.

You people baffle me sometimes lmao.

[julia @mooncat_is]

“We took the needle the model found, isolated the relevant handful of the haystack, and then gave it to a small child, who found the needle as well.”