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Claude Code is steganographically marking requests

https://thereallo.dev/blog/claude-code-prompt-steganography
1655•kirushik•14h ago•478 comments

Claude Sonnet 5

https://www.anthropic.com/news/claude-sonnet-5
1025•marinesebastian•11h ago•590 comments

The first early human eggs from stem cells

https://www.conception.bio/science-and-updates/the-first-early-human-eggs-from-stem-cells
24•dsr12•49m ago•2 comments

Matrix Orthogonalization Improves Memory in Recurrent Models

https://ayushtambde.com/blog/matrix-orthogonalization-improves-memory-in-recurrent-models/
12•at2005•46m ago•0 comments

Google copybara: moving code between repositories

https://github.com/google/copybara
150•reconnecting•6h ago•20 comments

Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5

https://twitter.com/AnthropicAI/status/2072106151890809341
519•Pragmata•6h ago•265 comments

Claude Science

https://claude.com/product/claude-science
435•lebovic•12h ago•131 comments

Forestiere Underground Gardens

https://en.wikipedia.org/wiki/Forestiere_Underground_Gardens
49•onemoresoop•4h ago•8 comments

Nano Banana 2 Lite

https://deepmind.google/models/gemini-image/flash-lite/
342•minimaxir•13h ago•140 comments

Pystd, similar-ish functionality with a fraction of the compile time

https://nibblestew.blogspot.com/2026/06/pystd-standard-library-similar-ish.html
11•ibobev•4d ago•2 comments

Leanstral 1.5

https://docs.mistral.ai/models/model-cards/leanstral-1-5-26-06
152•vetronauta•9h ago•45 comments

How does a pull-back car work? Illustrated teardown

https://mechanical-pencil.com/products/car
154•Muhammad523•2d ago•30 comments

From brain waves to words: a new path to communication without surgery

https://ai.meta.com/blog/brain2qwerty-brain-ai-human-communication/?_fb_noscript=1
139•alok-g•8h ago•73 comments

CERN bids farewell to the LHC and enters Long Shutdown 3

https://home.cern/cern-bids-farewell-to-the-lhc-and-enters-long-shutdown-3/
173•HelloUsername•1d ago•43 comments

I ported Kubernetes to the browser

https://ngrok.com/blog/i-ported-kubernetes-to-the-browser
219•peterdemin•9h ago•71 comments

Ante: A new way to blend borrow checking and reference counting

https://verdagon.dev/blog/ante-blending-borrowing-rc
75•g0xA52A2A•2d ago•17 comments

Hatari – Online Atari ST/STE/TT/Falcon Emulator

https://hatari.frama.io/hatari/online/hatari.html
50•gregsadetsky•7h ago•5 comments

Tokyo has only two barley tea makers, we visited one to see how mugicha is made

https://soranews24.com/2026/06/30/tokyo-has-only-two-barley-tea-makers-and-we-visited-one-to-see-...
110•zdw•10h ago•21 comments

Segmenting Robot Video into Actionable Subtasks

https://macrodata.co/blog/annotating-robot-video-subtasks
11•tomaspduarte•1d ago•2 comments

I built a mmWave material classification radar (2025)

https://gauthier-lechevalier.com/radar
165•GL26•12h ago•40 comments

Scaling Laws, Carefully

https://lilianweng.github.io/posts/2026-06-24-scaling-laws/
45•tehnub•4d ago•13 comments

ArXiv's Next Chapter

https://blog.arxiv.org/2026/06/30/arxivs-next-chapter/
18•subset•3h ago•1 comments

Deriving the SVD (Single Value Decomposition) from scratch

https://stillthinking.net/posts/connections-in-math-svd/
25•pcael•2d ago•9 comments

Building a custom octocopter from scratch with no prior hardware experience

https://karolina.mgdubiel.com/drone/
345•noleary•3d ago•73 comments

How employment changes when firms adopt generative AI

https://ramp.com/data/ai-jobs-impact
23•nreece•1h ago•10 comments

Stroustrup's Rule (2024)

https://buttondown.com/hillelwayne/archive/stroustrups-rule/
77•bmacho•3d ago•13 comments

TabFM: A zero-shot foundation model for tabular data

https://research.google/blog/introducing-tabfm-a-zero-shot-foundation-model-for-tabular-data/
65•brandonb•7h ago•8 comments

Long Island's decommissioned nuclear power plant

https://nickcarr.com/scouting-a-decommissioned-nuclear-power-plant/
110•mkmk•6d ago•43 comments

Have you restarted your computer this week?

https://taonaw.com/2026/06/27/have-you-restarted-your-computer.html
145•surprisetalk•15h ago•246 comments

Knoppix

https://www.knopper.net/knoppix/index-en.html
282•hoangvmpc•17h ago•109 comments
Open in hackernews

Redeploying Fable 5

https://www.anthropic.com/news/redeploying-fable-5
85•meetpateltech•2h ago

Comments

BatFastard•1h ago
Yeah! I only knew it for 3 days but I was starting to fall in love!
steve_adams_86•1h ago
It’s nice to have access again, but I’m hesitant to include it in my workflow now. In fact I’d rather not use American models at all if I could.

I have the sense that this limited usage model will persist, Opus at its current token price will gradually be phased out, and eventually the cost of these models will be unsustainable and impractical.

I’d rather not play this game anymore and seek out more reliable providers which may provide less capable models but aren’t going to gradually kneecap my plan or rug-pull me.

Frankly I’m much less concerned with sheer model capability these days and more interested in harnesses. Claude Code is not the best on the market, and I think there’s a lot of exploring and learning to do in that arena.

The whole Fable debacle has dramatically changed my perspective on the market and what I want from it/who I should support.

altmanaltman•1h ago
I mean that's the software playbook, get users addicted by offering it cheap and once you have them hooked, you raise the prices. There is no reason to think any non american company wouldn't follow this strategy. It's a different matter than the export control issue entirely and one that is systematic to software in general.
steve_adams_86•48m ago
> There is no reason to think any non american company wouldn't follow this strategy.

This is generally true, but there are some providers offering inference at relatively stable prices. They aren’t Opus-tier models, but some appear to be at or close to Sonnet 4.5 or so. For much of the work I do, this is fine.

Essentially if you aren’t at the frontier, you can find cheaper tokens that aren’t about to be rug-pulled or decommissioned on a whim.

gonight•58m ago
I agree with this, the last three months have been complete nonsense. I'll take a less capable model with a workflow I know well over playing "what got silently removed this time" or "figure out the latest model's quirks". The behavior of the american AI field/industry this year feels unstable and unsustainable, and I'm personally ready to wash my hands of this and find/build something reliable.
arjie•56m ago
Was there a use-case where you deployed Fable where you couldn’t use Opus in a non-interactive case? Perhaps Sonnet 5 will fill the gap because it’s better in agentic loops.

It’s so expensive, though. Useful interactively in coding agent but boy if you have a kind of task that Fable can do in an agentic loop that Opus can’t then you’re in a good place. Doubtless the frontier will move forward. These kinds of “problems of the future” are great to have solutions for.

And for an interactive agentic loop, not using Fable is just missing out on something. There’s no lock-in there.

zarzavat•1m ago
Don't worry, now that Fable is freely available, a Chinese distill will be out a few months from now. To riff on Musk, the US AI industry is the bootloader for the Chinese AI industry.
anhtudev•1h ago
Nice! I go to the x20 again.
hughw•1h ago
I've been wrestling for days with a recalcitrant Opus 4.8 unable to close the circle on an algorithm I'm sure, based on the three previous days' experience, Fable 5 will cut right through.
trunnell•1h ago
Hooray! Glad everyone came to their senses and we can all get on with business.

I bet it'll continue to be messy at the frontier for the foreseeable future as society gradually wakes up to the consequences of strong AI.

ChrisArchitect•1h ago
Discussion: https://news.ycombinator.com/item?id=48740771
mil22•1h ago
"For Pro, Max, Team, and select Enterprise plans, Fable 5 will be included for up to 50% of weekly usage limits through July 7, after which it will be available via usage credits."

The party will be short-lived.

mkw5053•1h ago
Huge bummer. So what's the point of an anthropic subscription? Or is this just the end of subscriptions? Looking forward to gpt-5.6 (assuming we can still use our subscriptions there).
matthew-wegner•45m ago
An Anthropic subscription is a 90%+ off discount for tech influencers to hype up an IPO (no different from companies directly paying Instagram influencers, except less overt).

And yes, after the IPO.

UltraSane•44m ago
At least it is the end of endless arguments over subscription quotas.
nl•13m ago
Opus isn't nothing!

I think the 5x subscription is here to stay - I'd bet they make money on that from lots of people not using it.

The 20x is already unavailable in Teams plans.

NickNaraghi•19m ago
You had two weeks to build up a queue of everything you wanted to do with it!
tekacs•59m ago
I really hope that one day we reach a point where we feel confident enough in the standards of care in upstream software, that we can get rid of these safeguards.

This isn't said out of naiveté or the idea that companies won't cheap out, but at some point – if access to models for defense is broadly available enough – we have to take a step back and say, "Aggressively insure your code against attack with AI on your side, because after <date> the other side will just _have_ AI."

I feel like something lost in a lot of the discussion around mythos and fable is that computer security absolutely has a substantial defender's advantage. It is indeed possible to ship e.g. surfaces that would be super resilient to attack (e.g. no unnecessary open surfaces, etc.) modulo category-shift attacks like RowHammer, etc.

Besides, just making sure that more people in the world actually have access to non-lobotomized models, this is _necessary_ if open source is (hopefully) going to continue to progress and if jailbreaks aren't totally vanquished.

twalla•59m ago
"some routine tasks like coding and debugging will fall back to Opus 4.8."

disappointed but not surprised

teruakohatu•58m ago
I hope the redeployed Fable 5 is the same as the version they pulled without any substantially increased restrictions.
tekacs•57m ago
Per the article, the safety margin on the classifier is even worse than it was before. It sounds like the model itself hasn't changed.
sparkling•38m ago
>Our testing confirmed that many less capable models—including Claude Opus 4.8, GPT-5.5, and Kimi K2.7—could identify the same vulnerabilities as Fable 5 did in the report.

That is nice advertising for Kimi, huh?

JoachimSchipper•25m ago
In a way, but note that the government actors here have Opinions on the Chinese having capable models.
rcr-anti•36m ago
I had already cancelled my subscription after finding the original Fable safeguards literally unusable (very basic chemistry, cryptography use cases), but with the false positives being admittedly worse now and the subscription not covering Fable for long I fail to see the point of consumer subscriptions now. Perhaps that's the goal, but it's a tough sell when Minimax M3 and GLM 5.2 are comfortably in Opus 4.5-4.8 territory but 1/5th-1/20th the price.
nl•16m ago
This post has been marked as a dupe, but it provides a lot more details than the other announcements of Fable's re-enablement provide:

> The export control directive on June 12 came after the government became aware of a report in which Amazon researchers had found a method of bypassing Fable 5’s safeguards: prompting it so that it identified a number of software vulnerabilities. In one case, the model produced code demonstrating how the relevant vulnerability could be exploited. Over the past two weeks, we have worked closely with the government and other partners, including Amazon, to review the report and evidence.

> Our testing confirmed that many less capable models—including Claude Opus 4.8, GPT-5.5, and Kimi K2.7—could identify the same vulnerabilities as Fable 5 did in the report. When it came to the demonstration of how to exploit the single vulnerability, every model we tested could produce the same demonstration as Fable 5 (including Claude Haiku 4.5, Sonnet 4.6, Opus 4.6, Opus 4.7, Opus 4.8, GPT-5.4, GPT-5.5, and Kimi K2.7).

This indicates three things:

1) WTF was Amazon thinking? Didn't their researches try the same thing in other models too before telling the CEO to tell the government it was dangerous (!?)

2) Anthropic - in particular Dario - really needs to learn government relations better. Most of the problems Anthropic has had with the government seem to stem from Dario's attitude rather than actual facts. (Eg, the DoD debacle seems to have ended up with OpenAI signing almost the same contract Anthropic already had, just worded differently)

3) The administration decision making is just wacky. In a normal administration they'd have actual policy documents you could look at to understand under what circumstances they think models have a problem. With this they just seem to make it up as they go, and the tools they use make no sense at all. If it is dangerous for cyber security reasons why would export controls make sense to use?