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Krzysztof Cieslak

@kcieslak.io
1.8K followers 122 following 761 posts

Artist 🎨 | Photographer 📷 | Globetrotter 🌍 | Speaker 🤹🏻‍♂️ | Author of Ionide 🚀 | Researcher @ Github Next 🔬| Co-creator of GitHub Copilot, Copilot NES, Agentic Workflows, and Ace | Building the future of software development 💻

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Krzysztof Cieslak @kcieslak.io · 17/09/2026
jev is test whether someone actually understands ML or is just hyped by "AI" and "agents"
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Krzysztof Cieslak @kcieslak.io · 14/09/2026
I think the only thing stopping me from using iPad as main travel-conference machine is lack of support for custom fonts in keynote. And well, worry about projector compatibility
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Krzysztof Cieslak @kcieslak.io · 14/09/2026
Always bet on OSS
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Krzysztof Cieslak @kcieslak.io · 14/09/2026
“Invented on social media”. Clearly among the 95%
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Krzysztof Cieslak @kcieslak.io · 14/09/2026
On the one hand Warsaw is not really city which vibe I enjoy… But I’m kinda glad this view exists as it’s great symbol for the last 20 years of growth
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Krzysztof Cieslak @kcieslak.io · 09/09/2026
Watching astra script pi subagents is absolutely fascinating
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Krzysztof Cieslak @kcieslak.io · 09/09/2026
We’re starting in just a few minutes!
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Chris Heilmann @codepo8.bsky.social · 09/09/2026
See you in 40 minutes for WeAreDevelopers Live! www.wearedevelopers.com/live www.youtube.com/watch?v=nbAj...
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Krzysztof Cieslak @kcieslak.io · 08/09/2026
High thinking + fast mode seems like a sweet spot for me
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Krzysztof Cieslak @kcieslak.io · 08/09/2026
I’m not surprised that all we see are just silly demos - coming up with unique new ideas is hard and most developers are not really great at it. 🤷 Also innovation takes time, just because we’ve got new model like 5 days ago doesn’t mean everyone already had all the good ideas
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Krzysztof Cieslak @kcieslak.io · 08/09/2026
iPad + Magic Keyboard + ssh is kinda good dev setup nowadays. I’m just sitting at cafe, switching between 5 different ssh sessions and managing agents 😂
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Krzysztof Cieslak @kcieslak.io · 08/09/2026
Astra is great. Sol was great. Whatever was before was great. The real breakthrough would Astra (or even Sol) quality model that's 100x faster than current models. It would open completely new user experiences, and handle completely new use cases.
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Krzysztof Cieslak @kcieslak.io · 07/09/2026
Black uniforms with SW Empire vibe. LMAO, they're not even pretending, do they.
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Krzysztof Cieslak @kcieslak.io · 06/09/2026
Computer use is architecturally terrifying and is disgusting way of using agents. But it just shows how bad were foundations we've been building software on for all those years - lack of compossibility, programmable APIs and walled gardens just came back to hunt us.
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Krzysztof Cieslak @kcieslak.io · 06/09/2026
I’d be more worried about any software whose team is not using AI nowadays*. It would suggest level of… closed-mindedness that doesn’t leads to good end-user software * yes, there are some counter-examples, but 99,99% of software doesn’t control nuclear reactors or planes or medical equipment.
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Krzysztof Cieslak @kcieslak.io · 05/09/2026
Believing into DHH/Must/TechBros bullshit is great Voight-Kampff test. Ofc, believing into this bullshit means failing it.
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Krzysztof Cieslak @kcieslak.io · 05/09/2026
Oh no, I'm becoming one of "them" - I think I'm reaching the point of writing my own orchestrator software.
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Miguel de Icaza @migueldeicaza.bsky.social · 05/09/2026
If the hubris that lead to security holes and poor engineering of doge/linux did not dissuade an enthusiastic friend, perhaps not supporting the Nazi ideology behind it will: www.flyingpenguin.com/dhh-nazism-f...
flyingpenguin.com
DHH Nazism Funded by 1Password VP Who Wrote “Honest Security” | flyingpenguin
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Krzysztof Cieslak @kcieslak.io · 05/09/2026
I would never share this.
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Krzysztof Cieslak @kcieslak.io · 04/09/2026
Finally playing with the Pi. I have no idea if the setup I create will be better than what I used before (OpenCode). But at least I have fun putting different pieces together. Reminds me of old-school editor hacking.
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Krzysztof Cieslak @kcieslak.io · 03/09/2026
I find this reporting absolutely shocking - finance.yahoo.com/technology/a... Not the $28k value, this one seems OK. The shocking part is this: > Among roughly 350 employees who completed the tracker, median AI spending was about $300 in the same 28 days.
finance.yahoo.com
Microsoft employee spends $28,000 on AI tokens in 28 days, internal tracker shows
Companies have spent years urging workers to use AI more frequently, only to run into the financial consequences.
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Doll @dollspace.gay · 03/09/2026
Can we form like a pro ai sane left of center progressive faction or what
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Thursday! What a concept! @thursaconcept.bsky.social · 03/09/2026
Thursday! What a concept!
Nadia from the Russian Doll series on Netflix remarking: Thursday! What a concept!
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Krzysztof Cieslak @kcieslak.io · 02/09/2026
I’m building something new, and as y’all know I love building OSS. 🚀 Check out blog post for our vision for multiplayer, ai-first document-focused environment. And also check out the code base if you’d want to use it today! (Links in quoted thread 🧵)
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Chris Heilmann @codepo8.bsky.social · 26/08/2026
In 29 days we will come to San Jose to run worldcongress.ai and I am dizzy with planning and excitement. 10k attendees, 600 speakers, tons of content. If you use "WEAREDEVSDAY" on checkout, you can now get half price tickets! ti.to/wearedevelop...
worldcongress.ai
WeAreDevelopers World Congress North America
WeAreDevelopers World Congress: developers, engineering leaders, and the people building production AI systems.
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GitHub Next @githubnext.com · 25/08/2026
✨ New post! "Knowledge compressor" We're all writing more specs. Pretty soon they add up to real tokens! How can we get rigorous about compacting that context in a way that doesn't impact model understanding? githubnext.com/posts/knowle... Discussion on HN: news.ycombinator.com/item?id=4943...
githubnext.com
Knowledge Compressor
How far can documentation be compressed without losing its meaning?
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Krzysztof Cieslak @kcieslak.io · 24/08/2026
My Sol is trying to make breakthroughs in geology and understanding of history of Earth 🙃
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Krzysztof Cieslak @kcieslak.io · 24/08/2026
One more speaker announcement - I'll be in beautiful Paris in September! 23-24 September, Paris, France AI Engineer Paris 2026 - ai.engineer/paris/2026
ai.engineer
AI Engineer Paris 2026: September 23-24 at Station F
AI Engineer Paris returns to Station F for two days of keynotes, technical sessions, and research talks on September 23-24, 2026.
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Krzysztof Cieslak @kcieslak.io · 23/08/2026
OH: “you should register yourself as a tool for your agent”
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GitHub Next @githubnext.com · 21/08/2026
Software Factories, Continuous AI and GitHub Agentic Workflows! GitHub's Don Syme joins Tessl's Guy Podjarny on The AI Native Dev to explore agentic repository automation. Episode Links YouTube: tessl.co/qsf Apple: podcasts.apple.com/us/podcast/e... Spotify: open.spotify.com/episode/1QP2...
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Krzysztof Cieslak @kcieslak.io · 15/08/2026
I guess I should put "talentless hack" and "ICE agent of the computing world" into my bio :>
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Krzysztof Cieslak @kcieslak.io · 14/08/2026
Hey friends 👋 Several conference announcements - dates and links in the thread! In each, I'll discuss how we've been developing AI developer tools at @githubnext.com and how we're attempting to predict the future of software development. I hope to see you on some of those!
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Krzysztof Cieslak @kcieslak.io · 14/08/2026
Hey friends 👋 Several conference announcements - dates and links in the thread! In each, I'll discuss how we've been developing AI developer tools at @githubnext.com and how we're attempting to predict the future of software development. I hope to see you on some of those!
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Krzysztof Cieslak @kcieslak.io · 14/08/2026
TFW you suddenly get invited to way too many conferences…
static.klipy.com
Breakfast Club Sunglasses
ALT: Breakfast Club Sunglasses
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Krzysztof Cieslak @kcieslak.io · 14/08/2026
Software developer hardware duality law: “Every software developer, at the same time, wants the most powerful laptop on the market and will spend days of their life trying to find the most productive cloud dev environment that will not use the mentioned laptop.”
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Krzysztof Cieslak @kcieslak.io · 13/08/2026
Software development is so much fun nowadays
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Doll @dollspace.gay · 13/08/2026
Ok humans rock
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Krzysztof Cieslak @kcieslak.io · 13/08/2026
Agents are just amplifiers - if your team has good code structure, good tools around the project, good automated workflows and processes they will be giving great results and be productivity multiplayer. But if your existing way of doing things is mess, they will just annoy you
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Krzysztof Cieslak @kcieslak.io · 12/08/2026
We now know who was at fault for today's incident.
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Krzysztof Cieslak @kcieslak.io · 11/08/2026
Good news today :-)
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Krzysztof Cieslak @kcieslak.io · 07/08/2026
I've published a new post on my blog post. It's probably the most essay'ish thing I've written in a while. "There are no moats in AI software developer tools" kcieslak.io/no-moats
kcieslak.io
There are no moats in AI software developer tools :: Krzysztof Cieslak
Discussion on how traditional market strategies, and adaption patterns are failing in the space of AI developer tools
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Doll @dollspace.gay · 06/08/2026
Especially since the true anti-capitalist position on AI is promoting open models. The CCP is literally cranking out open models to own western capitalist you would think these guys would love it.
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Siobhán @shibbi.me · 06/08/2026
I have no patience for an anti-capitalist position on AI that starts and ends with “strip the data centers for parts and get revenge on the billionaires.” You can start there! But that’s not actually a plan. It’s just noise. No mention of open-weight models. Completely unserious.
jacobin.com
Nobody Asked for AI
We tend to think that markets reflect consumer choice. But the artificial-intelligence boom has been powered by the investment decisions of concentrated capital rather than by consumer demand.
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Krzysztof Cieslak @kcieslak.io · 04/08/2026
Sol is like typical senior engineer - 0 ability to make trade-off decisions on work allocation, will spend forever chasing edge cases that will never happen, will be proud that everything is "correct", but will ignore that deadline for delivering was 3 months ago.
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Krzysztof Cieslak @kcieslak.io · 04/08/2026
I think I'm gonna run experiment to see if i can use iPad as my only daily driver... probably will need to build some software first, but that's what are agents for.
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Krzysztof Cieslak @kcieslak.io · 03/08/2026
I’ve written blog posts about starting to blog again… bit meta, eh? kcieslak.io/Restarting-t...
kcieslak.io
Restarting the blog :: Krzysztof Cieslak
Restarting the blog - let’s go on a new adventure
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Krzysztof Cieslak @kcieslak.io · 03/08/2026
Social media and internet are so weird nowadays - half of it is just LLM generate bullshit, other half is wanna-be influencers trying to do self-promotion.
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Krzysztof Cieslak @kcieslak.io · 03/08/2026
I would say something about Steve but why give him even more free marketing 🙃
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Lum @brokentoys.social · 03/08/2026
there are many people who work in the ai coding field who are keeping up with the almost daily changes, able to give a good review of where things are and where they're going, and where the industry is headed. steve yegge is not one of those people.
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Krzysztof Cieslak @kcieslak.io · 03/08/2026
Writing blog posts must be my biggest nemesis
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