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Alex Palcuie

@palcu.net
321 followers 307 following 135 posts

Member of Technical Staff @anthropic.com. Perennially oncall. I fix Claude without Claude when it goes down. Prev SRE at Google, FDE at Palantir. London.

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Reposted by Alex Palcuie
karl rove knausgård @uhactually.bsky.social · 11/09/2026
The world’s major religions are of course Christianity, Judaism, Islam, Buddhism, Hinduism, and Anthropic employee.
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Alex Palcuie @palcu.net · 20/09/2026
the rumours are true, i live in new york city now
me with the nyc skyline behind
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Alex Palcuie @palcu.net · 05/09/2026
thinking about this every day
guy gesturing in front of public with a slide saying "can claude fix itself?"
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Alex Palcuie @palcu.net · 02/09/2026
not only have ai models made adhd multitasking a superpower, they've also made procrastination a viable strategy fable 5.1 just launched, so if you've been putting things off, it may finally pay off
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Alex Palcuie @palcu.net · 01/09/2026
posted on slack that fable 5.1 writes the weekly reliability report now and it's better than mine, then our awesome marketing team made it a launch video
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Alex Palcuie @palcu.net · 28/07/2026
signed this I'm skeptical an agreement like this ever gets made, because coordination is hard. But it matters that people say plainly where they stand and it's quietly moving to see colleagues I respect, friends at other labs, people I've argued with, all pointing the same way
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Alex Palcuie @palcu.net · 24/07/2026
asked claude opus 5 how reliable it will be
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antirez @antirez.bsky.social · 09/06/2026
So I was totally sold on GPT 5.5. Solely on the basis of what I saw tonight with Fable, I will start to use again Claude extensively, probably as the main model as long as Fable is accessible. It's not just very capable, it performs organized steps and have deep understanding.
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Keith @mosheroperandi.bsky.social · 14/05/2026
Using Haiku to craft prompts to feed to Sonnet to build a hacking harness for Opus so it can craft zero days to steal someone's Mythos API access. And then using Mythos to craft more complex zero days to break into Anthropic and steal my true prize: the weights for Golden Gate Claude.
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Alex Palcuie @palcu.net · 23/04/2026
when two company slacks get linked and each side starts reacting with their own custom emoji, you get the Project Hail Mary first contact scene
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alice @alice.mosphere.at · 20/04/2026
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Marco @mcognetta.bsky.social · 16/04/2026
my new GPU arrived
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Alex Palcuie @palcu.net · 16/04/2026
#hugops to the bluesky team and their SREs
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Alex Palcuie @palcu.net · 16/04/2026
asked claude opus 4.7 about reliability and it blamed the kv cache before serving a single public token
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austin (e/accordion 🪗) @thebadcode.com · 11/04/2026
these mythos bug reports are getting out of hand
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alice @alice.mosphere.at · 11/04/2026
nix is pretty nice when you're not writing the actual nix code
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Liz Fong-Jones (方禮真) @lizthegrey.com · 11/04/2026
And Anthropic has now launched Dispatch, its own version of OpenClaw that uses regular token budget rather than supplemental, and is integrated with sub-agents using the Cowork harness. Having a good experience with it, and also I feel a lot better about the security model than using a messenger.
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Ethan Mollick @emollick.bsky.social · 07/04/2026
Oh no.
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Alex Palcuie @palcu.net · 07/04/2026
the reliability team was asked for feedback on claude mythos preview for the model card and naturally we wrote a paragraph of caveats but, and i don’t say this lightly, it’s faster than us at initial triage and it stood up a prod deploy none of us knew how to do
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Alex Palcuie @palcu.net · 07/04/2026
> Our run-rate revenue has now surpassed $30 billion takes it from there and puts it on chips for more Claude for everyone www.anthropic.com/news/google-...
anthropic.com
Anthropic expands partnership with Google and Broadcom for multiple gigawatts of next-generation compute
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
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Alex Palcuie @palcu.net · 06/04/2026
y’all should stop sending me this post
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Alex Palcuie @palcu.net · 01/04/2026
help, i typed /buddy in claude code and now a snarky snail judges me through every outage
in claude code: *leaves mucus trail shaped like a question mark* Ignored warnings. Now debugging Friday's screaming. Poetic.
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Alex Palcuie @palcu.net · 29/03/2026
been following my colleague Nicholas Carlini's work on this internally for a while now, so I was happy to see him give a talk publicly: > These current models are better vulnerability researchers than I am. I used to do this somewhat professionally.
slide text

TL;DR: LLMs can autonomously, and without fancy scaffolding, find and exploit 0days in critical software.
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SwiftOnSecurity @swiftonsecurity.com · 17/03/2026
Years later a proper sequel to Harry Potter Balenciaga has been published. I think it's worth watching to understand where we are now. youtube.com/watch?v=gtnt...
youtube.com
Harry Potter by Balenciaga (2026)
YouTube video by demonflyingfox
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Liz Fong-Jones (方禮真) @lizthegrey.com · 19/03/2026
Look @palcu.net, we're in El Reg! www.theregister.com/2026/03/19/a...
theregister.com
Fixing Claude with Claude: Anthropic reports on AI SRE
QCon London: It's still a job for humans, even though bots can search logs at the speed of I/O
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Alex Palcuie @palcu.net · 16/03/2026
okay, you’re getting some old school live blogging about #QConLondon
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Alex Palcuie @palcu.net · 16/03/2026
at qcon london and someone’s opsgenie pager sound just went off in the audience you could feel people around tense up
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Alex Palcuie @palcu.net · 15/03/2026
the claude inference infra since we did this
media.tenor.com
volume i and volume ii knobs are being adjusted by a person
ALT: volume i and volume ii knobs are being adjusted by a person
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Liz Fong-Jones (方禮真) @lizthegrey.com · 10/03/2026
Hosting Debugging Distributed Systems track at #QConLondon next week; thrilled to have @hazelweakly.me, @hakshak.bsky.social, @voidmaze.bsky.social, @colindou.ch , and @palcu.net joining me. And we all want to hear your war stories at the unconference session! Agenda: qconlondon.com/track/mar202...
QCon London by InfoQ
Debugging Distributed Systems
March 17 / The Queen Elizabeth II Conference Centre - London

Liz Fong-Jones, Technical Fellow
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Dustin Moskovitz @moskov.goodventures.org · 28/02/2026
does anyone need a used monkey’s paw? I’m all finished with my wish to vindicate effective altruism by regulating frontier AI labs
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Alex Palcuie @palcu.net · 27/02/2026
I was born in Romania, a country where the Securitate, the communist secret police, infiltrated nearly every aspect of life through torture and intimidation. If a regime like that had access to something like Claude, the revolution that brought us democracy might never have happened.
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Eris @isolyth.dev · 21/02/2026
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Alex Palcuie @palcu.net · 16/02/2026
my recurring sleep nightmare is the claude inference kv cache blowing up
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Alex Palcuie @palcu.net · 12/02/2026
we're looking for people to join the AI Reliability Engineering team here at Anthropic I've been here almost a year now, and I can tell you this is the most Type II fun I've had in my career
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Alex Palcuie @palcu.net · 05/02/2026
I asked our new model, Claude Opus 4.6, if it had any comments about the launch: > I'm told I'm the most intelligent and reliable model yet > I'm also told that by people who want me to launch on time, so take that as you will it's making fun of me
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Alex Palcuie @palcu.net · 19/08/2025
claude code anonymous here in london learnt during group therapy that Claude says “you’re absolutely right” to everybody, not just me
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Alex Palcuie @palcu.net · 05/08/2025
I asked Claude Opus 4.1 before the public launch to comment about its future reliability: > I am dropping with 99.99% uptime aspirations and 100% commitment to gracefully handling your edge cases. My error messages now come with explanatory haikus. bless its weights
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Alex Palcuie @palcu.net · 12/06/2025
my old workplace at Google/GCP had some downtime issues, and my current employer Anthropic/Claude experienced an outage too everything I touch seems to blow up
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Alex Palcuie @palcu.net · 05/06/2025
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‏ deepfates @deepfates.com.deepfates.com.deepfates.com.deepfates.com.deepfates.com · 29/05/2025
The nanny state is making everyone use Claude in their editor
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dame @dame.is · 30/05/2025
this came to me in a fever dream
americas next top model poster photoshopped with LLM model logos
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FT Alphaville @alphaville.ft.com · 15/05/2025
Oh hey, Carol Vorderman's here.
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Alex Palcuie @palcu.net · 14/05/2025
as a British person working at an American company whose expense cards are from a company called Brex, being told to "just Brex it" every time I have to submit receipts feels unnecessarily personal
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Alex Palcuie @palcu.net · 10/05/2025
first month at anthropic complete turns out 'working with models' means transformers, not gisele bundchen or david gandy
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Alex Palcuie @palcu.net · 27/04/2025
shot this london marathon video from my neighbourhood
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Alex Palcuie @palcu.net · 09/04/2025
i’m happy to share that, as of last week, i’ve joined @anthropic.com as a member of technical staff on the reliability engineering team so far, the vibes have been immaculate. Claude’s reliability and outages are now my problem. lastly, y’all should check out the new Max plan for Claude
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Alex Palcuie @palcu.net · 31/03/2025
feels weird for a londoner to complain about rain in san francisco, but here we are
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Alex Palcuie @palcu.net · 29/03/2025
after 8 years at google in SRE, this was my last week with the company i am immensely grateful to all the great people i worked with below is my joining hat, my badge and an encased TPU (ML accelerator) i won for landing a project
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Theo Bird @theonlybird.bsky.social · 21/03/2025
"We wanted to see Hayes electrical substation which is famous not just in Europe, but in the whole world"
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Alex Palcuie @palcu.net · 17/03/2025
given that vibecoding is kinda expensive, i wonder if YC (or other accelerators) could essentially become gatekeepers by buying LLM token usage in bulk and then "gifting" it only to people who clear an initial screening
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