Mikko Haapoja (@MikkoH) header
Mikko Haapoja (@MikkoH) profile picture

Mikko Haapoja

@MikkoH

Building AI @Opendoor. Previously @Shopify (Sidekick, 3D/AR/VR, Metafields, Metaobjects)

 Toronto, Canada
mikkoh.com/
Joined November 2008
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  • Followers4.8K
1KMedia
Photo by Mikko Haapoja (@MikkoH)Photo by Mikko Haapoja (@MikkoH)Photo by Mikko Haapoja (@MikkoH)Photo by Mikko Haapoja (@MikkoH)Photo by Mikko Haapoja (@MikkoH)Photo by Mikko Haapoja (@MikkoH)Photo by Mikko Haapoja (@MikkoH)Photo by Mikko Haapoja (@MikkoH)Photo by Mikko Haapoja (@MikkoH)Photo by Mikko Haapoja (@MikkoH)
I added image generation to my coding harness so it can tell me little stories as I work. Today it noticed Remembrance Day and made this Workdays can blur together. Small, unexpected moments like this make one feel distinct enough to remember
Image from Mikko Haapoja (@MikkoH)
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Hey someone at @github why is this button always broken? This is in a draft PR with inline draft comments
Image from Mikko Haapoja (@MikkoH)
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I can’t believe I’ve seen both 3 second anti-skip CD players and AI
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Still ❤️ Zellij and PI Top-right pane has an ongoing story. Every 30 min, the next scene picks up where the last left off, weaving in world events and whatever I’m working on It starts with `/avatar SOME PROMPT` in PI but then evolves
🤖 Made with AI
Image from Mikko Haapoja (@MikkoH)
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Today’s scenes from the little character living in my editor Bored at his desk → paper boat → a storm on the coffee-ring sea → outside to find the tree his leaf sail came from
🤖 Made with AI
Image from Mikko Haapoja (@MikkoH)
Image from Mikko Haapoja (@MikkoH)
Image from Mikko Haapoja (@MikkoH)
Image from Mikko Haapoja (@MikkoH)
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This is terrible
MJ (@mjackson) profile pictureMJ
@mjacksonNov 9
This is the worst one I’ve seen 😞 terminal2shell.com/
Terminal2Shell: Critical flaw grants instant shell access on every major OS

Terminal2Shell: Critical flaw grants instant shell access on every major OS

Researchers disclose a 55-year-old vulnerability affecting macOS, Windows and Linux. Exploitation is trivial and requires no special tools. No patch exists.

terminal2shell.com
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This harness leaderboard is interesting huggingface.co/spaces/joelni…
Harness Leaderboard - a Hugging Face Space by joelniklaus

Harness Leaderboard - a Hugging Face Space by joelniklaus

Which coding-agent harness should you use for your model?

huggingface.co
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This sounds dumb, but it’s a real unlock: make coding agents put code in the right folders. Your folder structure is documentation they already latently know about
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I always feel pedantic asking people to move files to different folders
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This is nuts if true
Rikiya Takehi (@rikiyatakehi) profile pictureRikiya Takehi@rikiyatakehiNov 2
We asked GPT-6 Astra to edit Qwen3.5-0.8B weights to improve math. It directly changed only 0.016% of weights, fixing 0.8B's reasoning loops & improving math up to 6x and even instruction following 3x, without gradients or training. We call this Weight-Space Programming: frontier LLMs can now natively read/write neural network weights! 🧵 Blog: rikiyat.github.io/blog/weigh…
Image from Rikiya Takehi (@rikiyatakehi)
Readers added context they thought people might want to know
LLM was given weights explicitly as text in prompt and used code/forward passes (per authors' logs) to ablate Qwen looping direction, a known thinking-mode issue per model card. Primarily fixed repetition in that mode, not general 'natively' improving weights/math. rikiyat.github.io/blog/weight-sp… github.com/RikiyaT/lm_und… huggingface.co/Qwen/Qwen3.5-0… huggingface.co/RikiyaT/Qwen3.…
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Told a civil engineer that AI writes all my code now. His jaw dropped. I wonder if he saw his own job drastically changing in the same way as mine has or did he realize programmers might someday be obsolete?
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Pretty happy to see this. Lots of good memories in this building obj.ca/shopify-signs-new-lea…
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Love the momentum around System One models
michelle (@michellechen) profile picturemichelle
@michellechenOct 19
a brand new model paradigm! introducing 𝚌𝚕𝚊𝚒𝚛𝚒𝚌: a system one model for extracting, computing, estimating, and predicting values from unstructured inputs. blog.cloudflare.com/clairic-…
Introducing Clairic, a new System One class of extraction models

Introducing Clairic, a new System One class of extraction models

Clairic is a new model from Cloudflare that is a System One extraction modeI, capable of extracting, computing, estimating, and forecasting data from unstructured inputs.

blog.cloudflare.com
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Starting to wonder if “pair programming” with AI could ease the PR review bottleneck Gathering context makes people say, “I’ll review this tomorrow.”
🤖 Made with AI
Image from Mikko Haapoja (@MikkoH)
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I think a year from now it’ll feel quaint that we were editing SOUL.md just to coax a bit of dry humour out of our coding agents I feel like we need to vibe-code one of these
🤖 Made with AI
Image from Mikko Haapoja (@MikkoH)
Image from Mikko Haapoja (@MikkoH)
Image from Mikko Haapoja (@MikkoH)
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UI used to have to suit everyone’s taste, so it got generic and bland. Now we can make it personal. I think we can get wild
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These two goofs are working on the same thing. Let's see who wins
Image from Mikko Haapoja (@MikkoH)
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Dingus wins this round I’m on my church’s board. I asked both agents to determine if revenue was up because of increased giving or because of fees from our children’s camp Both got it right. Muse needed an extra prompt. Dingus prepared a Doc that I can work through later
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Mikko Haapoja retweeted
Rudra Das (@rud_dudd) profile picture
Rudra Das
@rud_duddOct 2
Cooking at @Opendoor.
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I’ve been working on a bunch of AI initiatives at @Opendoor. Hard problems. Lots to build If you’re in Toronto and curious, come chat with me, @MargaretSyms, and @EyalKlein1 and others on October 7 Limited spots: docs.google.com/forms/d/e/1F…
Image from Mikko Haapoja (@MikkoH)
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