X日报 · AI科技

This is a super exciting release - Claude Fable 5 is the same underlying model as Mythos but with added safeguards. The benchmarks are great and it's SOTA on everything by a margin but I'll add that *qualitatively* also, this is a major-version-bump-deserving step change forward (imo of the same order as Claude 4.5 was in November), peaking especially for long problem-solving sessions on very difficult problems. You can give it a lot more ambitious tasks than what you're used to, the model "gets it" and it will just go, and it's never felt this tempting to stop looking at the code at all (but don't do this in prod!). The model still has quirks that people will run into and the safeguards are configured to be a little too trigger happy for launch, which can hopefully be tuned over time.

I feel a lot of things changing as working software increasingly comes out on a tap. The Jevon's paradox kicks in and I feel my own demand for software growing substantially. You can ask for anything - explainers, visualizers, dashboards, bespoke single-use apps (e.g. a full wandb that is hyper-specific just for your project), you can 10X your test suite, auto-optimize code, run giant research projects with custom HTML for the results, anything! "Free your mind" (Matrix ref). Really looking forward to all the things people build!

Today I'm publishing a new essay, Policy on the AI Exponential. AI is progressing extremely fast—much faster than the policy process was built to handle. The essay lays out where I think the technology is now, and the action needed to close the gap: https://t.co/Lh6PWae178

Here is our current plan for OpenAI:

https://t.co/r29FUUee3A

We’re launching Claude Corps, a national fellowship program matching people early in their careers with US nonprofits.

We'll teach 1,000 people to use Claude, and pay them to use AI to advance their hosts’ missions.

https://t.co/QI6JmlAdSr

AI is advancing at a pace our policymaking institutions were never built for—and the gap between the two is becoming the central challenge of the technology. In his latest essay, our CEO Dario Amodei lays out how to close it.

We're launching three new initiatives to support the efforts he outlines.

We’re rolling out changes to make Fable 5’s safeguards for frontier LLM development visible.

Starting this week, flagged requests will visibly fall back to Opus 4.8—the same as our safeguards for cyber and bio. You will see this every time it happens. On the API, any flagged requests will return a reason for their refusal (coming to server-side fallback in the next few days).

We wanted to deploy Fable 5 to our users quickly and safely. Visible safeguards can be probed, so they have to be robust, which takes time to get right. Invisible safeguards can be targeted more narrowly, allowing us to ship quickly with very few false positives. We went with invisible safeguards for this reason—and that was the wrong tradeoff. You should have visibility into the safeguards we have in place, and why. We’re sorry for not getting the balance right.

Making the safeguards visible makes them easier to work around, so keeping them robust to jailbreaks will unfortunately mean more false positives while we improve the classifiers. We're also tuning our bio and cyber classifiers to trigger less often on harmless requests. We know this is frustrating and we’ll do our best to keep this period as short as possible.

If you think a request has been mistakenly flagged: run /feedback in Claude Code, click thumbs-down on the fallback in https://t.co/LtktniD5HY or Cowork, or file the safeguard appeal form for API requests. Your reports help us tune these classifiers and we appreciate your feedback.
https://t.co/TDAAYRGqDt

Un desarrollador ucraniano creó un agujero negro en su terminal para obligarse a tomar descansos.

Cuanto más trabajas sin parar, más crece y deforma tu código con su lente gravitacional. Descansas y se encoge.
https://t.co/HYkNMjgvTZ

I made a personal black hole that makes you take breaks 🕳️

A shader for Ghostty that spawns a small black hole in your terminal - it drifts around, gravitationally lensing your text. The longer you work without stopping, the bigger it gets, until it's basically demanding you go touch grass

Take a break and it quietly shrinks away

We heard you wanted to use Codex rate limit resets on your own time.

Starting today, we’re rolling out the ability to save rate limit resets to use later.

We’re starting Go, Plus, Pro, and Business users with one free reset: https://t.co/gucyTi04wc

We will hold a media teleconference at 11am ET on June 17 to preview the Katalyst Space mission to boost the orbit of NASA’s Neil Gehrels Swift Observatory. Learn how to listen in: https://t.co/mu6x0jmqUF https://t.co/yq8JXd8ztm

Deployment of 24 @Starlink satellites confirmed

Major cheat code for life: Master the art of the fresh start. From a bad morning. From a bad interaction. From a missed workout. From a poor decision. The goal isn't to avoid the fall. It's to shorten the time between the fall and the reset. Fast recovery compounds.

The older I get, the more I realize the power of always having something on the calendar you're excited about. It can really be anything. Difficult physical challenge, big project, fun trip, ambitious goal, whatever. It creates energy and gets you through the lows. Life hack.

My current lifemaxxing stack:

- 4:30am wake up
- Read classic books
- 3 hours creative work before 8am
- Lift/run 6x/week
- Eat single ingredient foods
- Present time with fam/friends
- 20-min evening sauna
- Wild Roman skincare routine
- 8:30pm bedtime

Wouldn't change a thing.

This is still insane... https://t.co/GPIuEphXH2

Michael Truell (@mntruell) fell in love with coding at 12. The company he co-founded, @cursor_ai, went from 15 people to 700 in two years.

Today, over 60% of the Fortune 500 build with its AI coding platform. https://t.co/1UROi02oHJ