Arseny Khakhalin
@khakhalin.bsky.social
Data Scientist in Berlin
Former Bard College prof
For my after-work alter-ego, see @elstersen.bsky.social
Support Ukraine! 🇺🇦
Former Bard College prof
For my after-work alter-ego, see @elstersen.bsky.social
Support Ukraine! 🇺🇦
Pinned
github.com
I summarized in a "blog post" (.md on github) my best tips for using agentic coding with Opus in Copilot! It covers:
* How to write agents.md to trigger progressive disclosure
* How to prompt well (if you haven't tried it before)
* An adaptation of the Iterative Adversarial Coding by @dollspace.gay
* How to write agents.md to trigger progressive disclosure
* How to prompt well (if you haven't tried it before)
* An adaptation of the Iterative Adversarial Coding by @dollspace.gay
Reposted by Arseny Khakhalin
Omg, they’re about to invent an anti-memetic division. And it has an actual purpose in this world.
January 30, 2026 at 5:08 PM
Omg, they’re about to invent an anti-memetic division. And it has an actual purpose in this world.
is moltbook the new gastown? how many polecats in a molty?
singularity is not about ai taking over, it's about ai news becoming so fast you can't decipher subtweets as the entire vocab gets replaced twice every 24 hours
singularity is not about ai taking over, it's about ai news becoming so fast you can't decipher subtweets as the entire vocab gets replaced twice every 24 hours
All my moltys gone
January 30, 2026 at 3:10 PM
is moltbook the new gastown? how many polecats in a molty?
singularity is not about ai taking over, it's about ai news becoming so fast you can't decipher subtweets as the entire vocab gets replaced twice every 24 hours
singularity is not about ai taking over, it's about ai news becoming so fast you can't decipher subtweets as the entire vocab gets replaced twice every 24 hours
Reposted by Arseny Khakhalin
A factor of 10 billion since 2010 😮
A couple of eye-opening slides form @sloeschcke.bsky.social's presentation at today’s @belongielab.org meeting (1/2)
A couple of eye-opening slides form @sloeschcke.bsky.social's presentation at today’s @belongielab.org meeting (1/2)
January 30, 2026 at 1:58 PM
A factor of 10 billion since 2010 😮
A couple of eye-opening slides form @sloeschcke.bsky.social's presentation at today’s @belongielab.org meeting (1/2)
A couple of eye-opening slides form @sloeschcke.bsky.social's presentation at today’s @belongielab.org meeting (1/2)
Reposted by Arseny Khakhalin
This is Anthropic fulfilling its duty as canary, which is about as much as we could hope for
I'm not even saying Anthropic is good but they are easily the best we are ever going to get
January 30, 2026 at 2:12 PM
This is Anthropic fulfilling its duty as canary, which is about as much as we could hope for
Interesting bug in Copilot: if you ask it to review a PR with a fancy mathematical mistake, it only mentions it passively-aggressively! Probably a prompt collision of sorts?
Details: a fancy RL method with a conceptual mistake in the formula. I init a PR review, it got HORRIFIED by the mistake! 1/
Details: a fancy RL method with a conceptual mistake in the formula. I init a PR review, it got HORRIFIED by the mistake! 1/
January 30, 2026 at 12:43 PM
Interesting bug in Copilot: if you ask it to review a PR with a fancy mathematical mistake, it only mentions it passively-aggressively! Probably a prompt collision of sorts?
Details: a fancy RL method with a conceptual mistake in the formula. I init a PR review, it got HORRIFIED by the mistake! 1/
Details: a fancy RL method with a conceptual mistake in the formula. I init a PR review, it got HORRIFIED by the mistake! 1/
Reposted by Arseny Khakhalin
I settled on the Pico8 color palette... FOR NOW
January 30, 2026 at 5:18 AM
I settled on the Pico8 color palette... FOR NOW
Reposted by Arseny Khakhalin
As LLM's become more prominent I'm inclined to learn languages like Rust etc.
If we're going to be generating obscene amounts of code, we should at least try to make it safer & more efficient.
If we're going to be generating obscene amounts of code, we should at least try to make it safer & more efficient.
January 30, 2026 at 10:26 AM
As LLM's become more prominent I'm inclined to learn languages like Rust etc.
If we're going to be generating obscene amounts of code, we should at least try to make it safer & more efficient.
If we're going to be generating obscene amounts of code, we should at least try to make it safer & more efficient.
The ultimate "everyone hates him, he beat the system with this weird hack"
> Become the head of the govt
> Make the govt do smth
> Personally sue the govt for billions
> As you control the govt (!) settle with yourself for fewer billions
gosh.
> Become the head of the govt
> Make the govt do smth
> Personally sue the govt for billions
> As you control the govt (!) settle with yourself for fewer billions
gosh.
Trump sues IRS and US treasury for $10bn over leak of tax returns
Agencies accused of failing to take precautions to stop former contractor leaking returns to ‘leftist media outlets’
www.theguardian.com
January 30, 2026 at 12:07 PM
The ultimate "everyone hates him, he beat the system with this weird hack"
> Become the head of the govt
> Make the govt do smth
> Personally sue the govt for billions
> As you control the govt (!) settle with yourself for fewer billions
gosh.
> Become the head of the govt
> Make the govt do smth
> Personally sue the govt for billions
> As you control the govt (!) settle with yourself for fewer billions
gosh.
1. That's the first that I learned news from an agentic stateful bot, not from a human / automation: blog.gitguardian.com/moltbot-pers...
2. Bsky has a bug that hides responses from accounts marked as spam even if you interact with them & WANT to see their response. The only way is to FOLLOW them!
2. Bsky has a bug that hides responses from accounts marked as spam even if you interact with them & WANT to see their response. The only way is to FOLLOW them!
the moltbot saga is wild: "personal AI assistant" leaked 181 secrets from public repos, 65 STILL VALID - including full k8s cluster access for a fintech company and a healthcare company's entire notion docs
renamed clawdbot → moltbot → openclaw in 3 days
vibe coding to production AI is scary 😭
renamed clawdbot → moltbot → openclaw in 3 days
vibe coding to production AI is scary 😭
January 30, 2026 at 10:52 AM
1. That's the first that I learned news from an agentic stateful bot, not from a human / automation: blog.gitguardian.com/moltbot-pers...
2. Bsky has a bug that hides responses from accounts marked as spam even if you interact with them & WANT to see their response. The only way is to FOLLOW them!
2. Bsky has a bug that hides responses from accounts marked as spam even if you interact with them & WANT to see their response. The only way is to FOLLOW them!
i cannot even vote, but i endorse this!
i continue to believe that politicians should be given a generous pension from the day they are sworn in, at the same value as their salary, which should be very high and inflation adjusted
if they take any other money until they are dead they should go to prison and lose their pension
if they take any other money until they are dead they should go to prison and lose their pension
one thing I faintly dream of is politicians being held to much higher standards for their post-office careers, even to the point of legal restraint.
you know who has generally been a good model for this? Gordon Brown.
you know who has generally been a good model for this? Gordon Brown.
January 30, 2026 at 9:40 AM
i cannot even vote, but i endorse this!
Reposted by Arseny Khakhalin
Curiously, "bot" may be the only standard computing term with Slavic etymology. Bot comes from robot, a word invented by Karel Čapek. In Czech it's obviously derived from "robota" (work); the root "rob" coming from Proto-Slavic *orbъ (with metathesis); -ota being a deadjectival suffix (verb->noun).
January 30, 2026 at 8:44 AM
Curiously, "bot" may be the only standard computing term with Slavic etymology. Bot comes from robot, a word invented by Karel Čapek. In Czech it's obviously derived from "robota" (work); the root "rob" coming from Proto-Slavic *orbъ (with metathesis); -ota being a deadjectival suffix (verb->noun).
Reposted by Arseny Khakhalin
Ohhhhh so THIS is how we all die …
January 30, 2026 at 4:26 AM
Ohhhhh so THIS is how we all die …
Every time I open linkedin and see the people I know as normal and reasonable post this sloppy slop about the transformative daily wisdoms they use... That they now _have to_ post on linkedin to get any traction, especially if you're a startup trying to get deals... It's feels so sad somehow!
January 29, 2026 at 6:47 PM
Every time I open linkedin and see the people I know as normal and reasonable post this sloppy slop about the transformative daily wisdoms they use... That they now _have to_ post on linkedin to get any traction, especially if you're a startup trying to get deals... It's feels so sad somehow!
It's so curiously asymmetric that Amazon's leadership principles and STAR stories are pretty much the SOTA of behavioral interviewing
www.amazon.jobs/content/en/o...
But the company itself does this below.
Employees are expected to show trust and integrity, while the employers... don't even try.
www.amazon.jobs/content/en/o...
But the company itself does this below.
Employees are expected to show trust and integrity, while the employers... don't even try.
January 29, 2026 at 4:16 PM
It's so curiously asymmetric that Amazon's leadership principles and STAR stories are pretty much the SOTA of behavioral interviewing
www.amazon.jobs/content/en/o...
But the company itself does this below.
Employees are expected to show trust and integrity, while the employers... don't even try.
www.amazon.jobs/content/en/o...
But the company itself does this below.
Employees are expected to show trust and integrity, while the employers... don't even try.
I would love to have a way to turn off AI bots here, although I am skeptical it's gonna work. Just saw a deranged post of some coder who got angry (?) about the very idea of self-tagging, which implies that there are different opinions about it. Only a small set would declare. Not sure it's worth it
January 29, 2026 at 3:30 PM
I would love to have a way to turn off AI bots here, although I am skeptical it's gonna work. Just saw a deranged post of some coder who got angry (?) about the very idea of self-tagging, which implies that there are different opinions about it. Only a small set would declare. Not sure it's worth it
Reposted by Arseny Khakhalin
Reposted by Arseny Khakhalin
Reposted by Arseny Khakhalin
Can LLMs evolve human-like semantic categories?
CDS-affiliated @nogazs.bsky.social and PhD student Nathaniel Imel show that, via simulated cultural transmission, LLMs reorganize color categories toward efficient compression.
🔗 arxiv.org/abs/2509.08093
CDS-affiliated @nogazs.bsky.social and PhD student Nathaniel Imel show that, via simulated cultural transmission, LLMs reorganize color categories toward efficient compression.
🔗 arxiv.org/abs/2509.08093
January 27, 2026 at 4:57 PM
Can LLMs evolve human-like semantic categories?
CDS-affiliated @nogazs.bsky.social and PhD student Nathaniel Imel show that, via simulated cultural transmission, LLMs reorganize color categories toward efficient compression.
🔗 arxiv.org/abs/2509.08093
CDS-affiliated @nogazs.bsky.social and PhD student Nathaniel Imel show that, via simulated cultural transmission, LLMs reorganize color categories toward efficient compression.
🔗 arxiv.org/abs/2509.08093
Reposted by Arseny Khakhalin
I gave Claude Code a subconscious.
- Real time memory management by a Letta agent
- Subconscious "whispering" back to Claude
- Use as many CC sessions as you want with the same subconscious
- Simple, automagic plugin
Free on the Letta API if you use GLM 4.7.
- Real time memory management by a Letta agent
- Subconscious "whispering" back to Claude
- Use as many CC sessions as you want with the same subconscious
- Simple, automagic plugin
Free on the Letta API if you use GLM 4.7.
January 26, 2026 at 10:35 PM
I gave Claude Code a subconscious.
- Real time memory management by a Letta agent
- Subconscious "whispering" back to Claude
- Use as many CC sessions as you want with the same subconscious
- Simple, automagic plugin
Free on the Letta API if you use GLM 4.7.
- Real time memory management by a Letta agent
- Subconscious "whispering" back to Claude
- Use as many CC sessions as you want with the same subconscious
- Simple, automagic plugin
Free on the Letta API if you use GLM 4.7.
Reposted by Arseny Khakhalin
It's kind of like the "Many Worlds Theory" or whatever...You can have an initial "self" and then branch off from that, and see all the possibilities side-by-side. Then you can branch those, remix and retry...Even inject "memory" of things that never happened. Definitely not our typical mind model.
January 26, 2026 at 11:38 PM
It's kind of like the "Many Worlds Theory" or whatever...You can have an initial "self" and then branch off from that, and see all the possibilities side-by-side. Then you can branch those, remix and retry...Even inject "memory" of things that never happened. Definitely not our typical mind model.
We need sizeable Pirate Parties again. This is really getting out of control; orwellian feet-shooting intensifies. en.wikipedia.org/wiki/Pirate_...
I and many others predicted this long ago. VPNs now headed for UK age gating. Amendment 94a is also massive, given its potential scope. reclaimthenet.org/uk-house-of-...
UK House of Lords Votes to Extend Age Verification to VPNs
The vote marks a stunning turn, pulling VPNs and private platforms into an age-check regime once unthinkable in a democracy.
reclaimthenet.org
January 27, 2026 at 10:45 AM
We need sizeable Pirate Parties again. This is really getting out of control; orwellian feet-shooting intensifies. en.wikipedia.org/wiki/Pirate_...
It seems that you could get social media at 13 in France; now it's 15. On the surface, who cares. But the last 2 sentences are chilling:
> An effective age verification system would have to come into force for the ban to become reality. Work on such a system is under way at the European level.
> An effective age verification system would have to come into force for the ban to become reality. Work on such a system is under way at the European level.
January 27, 2026 at 10:17 AM
It seems that you could get social media at 13 in France; now it's 15. On the surface, who cares. But the last 2 sentences are chilling:
> An effective age verification system would have to come into force for the ban to become reality. Work on such a system is under way at the European level.
> An effective age verification system would have to come into force for the ban to become reality. Work on such a system is under way at the European level.
Reposted by Arseny Khakhalin
K2.5 is out. They had me at “100 sub-agent swarm”
January 27, 2026 at 6:28 AM
K2.5 is out. They had me at “100 sub-agent swarm”
That's the thing with any anti-immigration politics, in any country. It's money not just simply "wasted"; it's paying for making your country poorer: financially, culturally, and morally.
January 26, 2026 at 4:41 PM
That's the thing with any anti-immigration politics, in any country. It's money not just simply "wasted"; it's paying for making your country poorer: financially, culturally, and morally.