@dhh

Father of three, Creator of Ruby on Rails + Omarchy, Co-owner & CTO of 37signals, Shopify director, NYT best-selling author, and Le Mans 24h class-winner.

dhh.dk
Joined April 2008
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DHH
@dhh
Sep 24
It's pencils down, people. Writing code by hand is no longer an economically viable skill for most programmers at most companies. But the future of making software has never been brighter. Don't you dare black pill this beautiful moment! youtu.be/vDjW_dRyKXY?si=6Fsf…

Rails World 2026 Opening Keynote - DHH

DHH opens Rails World 2026 in Austin with a keynote on the age of A...

youtube.com
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The hype is true. Anthropic did magic with Opus 5.5. Damn it's good.
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The next few days has Omarchy Meetups all over the world. I'm going to the one in Copenhagen tomorrow. You should try to attend one close to you. Sharing the joy of beautiful, fun & agentic machines with others is the best white pill! omarchy.org/meetups/
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The Omarchy billboard ran all week in the heart of Copenhagen. Fantastic job by @Dennis_Rye and @sonderby to make this happen. WE CAN JUST DO THINGS!
Dennis Rye
@Dennis_Rye
16h
More than 920 000 have seen this now, and the week is coming to it’s end. It’s been FUN to do something crazy like this. Thanks @sonderby 🎉 Here’s a wider shot of it all, in the heart of Copenhagen.
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“Science advances one funeral at a time.” — Paul Samuelson (echoing Max Planck)
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Every software developer should own a potato PC. It's the easiest way to ensure your application is fast enough. Put your agents to work within it and watch the weight drop. There's no reason a machine from ten years ago shouldn't fly like superman.
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The constant decel messaging in Europe is insufferable as an adult, but its effect on kids is worse. As a parent, it's your obligation to counterprogram this nonsense. Show them robots, rockets, and wonders of AI. Show them cathedrals and moon landings. Instill hope in progress.
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Then teach them to be strong, diligent, and ambitious. Help them get in great shape. Let them learn how to fight virtually and physically. Show them the two genders need each other and how to balance mercy/justice. Train them to honor merit, then how to apply grit to achieve it.
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Play Fortnite together, then do 20 push-ups. Read at night, then watch Aliens with them a few years before its really appropriate. Blow on their scraped knee, then tell 'em it's going to be fine, and get back on the bike. Play Uno, then have them empty the dishwasher.
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This wasn't what I said, but it's still funny 😂
Venture Backed
@venturebackedtv
Sep 26
POV you watch @dhh explain to you coding is dead
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Once you understand that the world is full of highly neurotic people who need a doom's day scenario to validate their emotions, it all makes much more sense: Malthusian starvation, pandemic, climate, and now AI. I wish we still had "the devil" to play this part.
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Daniel has been cooking a Rust version of the asm upgrades to ttfx that pulls in the CPU-specific optimizations. Love it! I have zero allegiance to whatever code my agents wrote. This is exactly the kind of nerdsniping I love to see 😄🤘
Daniel Collin
@daniel_collin
18h
WIP but ~10.7x faster than the original Rust code and 1.25x faster than the asm version on average. Still written in Rust with AVX-512/AVX2/SSE2/Neon opts github.com/omacom/ttfx/pull/…

Add the fx engine: 10.7x faster than Rust, 1.24x faster than asm by emoon · Pull Request #44 ·...

Adds src/fx, a second Rust engine built for speed, running all 37 effects with byte-identical output. 10.7× faster than the Rust engine on two cores (8.0× on one), and 1.24× faster than the assembl...

github.com
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The YouTube comments on the Rails World keynote perfectly capture the anger stage of grief. Furious at the change they deep down already know is inevitable. Programmers lashing out with impotent rage against The Machine. Ironic. youtube.com/watch?v=vDjW_dRy…

Rails World 2026 Opening Keynote - DHH

DHH opens Rails World 2026 in Austin with a keynote on the age of A...

youtube.com
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Creative destruction is how the world produces progress. But whether it's portrait painters displaced by cameras, Luddites by the mechanical loom, or programmers by AI, it's still individually unsettling. Sympathy is in order. We should all have some humility in this moment.
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I'm very ready! And it's perfectly clear that no later than the end of this year, it'll be the end of the line for Photoshop, Lightroom, and any other client-side program like that. Agent-developed replacements are coming for all of it. Fast.
Piotr CH
@p_ch
Sep 25
Lightroom replacement for Omarchy Compatible with Lightroom presets (VSCO Film) and adobe camera profiles. Catalog import also works already. A few more sessions and I should be able to convince @dhh to ditch his Lightroom mac mini.
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Agent-led development asks you to have a business-owner mindset: What's the outcome we're trying to achieve? The less you're required the dig into the details, the easier it is to see the big picture.
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I understand why that's a difficult transition for individual contributors who've perhaps never had to command large teams. There's a deep satisfaction in reviewing every line of code. I did that for decades! But also throttles your ambition.
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The asm-accelerated version of ttfx has been released as 0.4. Will ship in next Omarchy. This print effect now runs more than 1,000x faster than the original Python and 32x faster than the old Rust! (But we'll soon speed up the Rust fallback too.) github.com/omacom/ttfx/pull/…
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Thrilled to announce that @ThePrimeagen has joined Omarchy Core to lead Agentic QA. His new Oligarchy harness will soon be vetting all our upcoming releases using @digitalocean droplets, which will host agents running on our @AIatMeta tokens. Full cricle! omarchy.org/news/2026/09/the…

ThePrimeagen joins Omarchy Core to lead Agentic QA - Omarchy News

ThePrimeagen is joining Omarchy Core to lead Agentic QA! The man who made Vim, the terminal, and Linux look like the most fun you could have with a computer will now be in charge of making sure every...

omarchy.org
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The asm version of ttfx continues to improve. The Rust version had been through many improvements, but even hours of frontier intelligence was starting to yield very modest improvements. The leaps going to asm has been huge. Now 8x mean on an Intel 135U! 🤩
DHH
@dhh
Sep 26
While I was sleeping, Opus improved efficiency further. Now up to 22x faster at peak, 6x faster on mean, and up to 450x faster than the original Python implementation! Supports SSE2, AVX2, and AVX-512. Falls back to the slower Rust implementation otherwise.
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The peanut gallery is almost as eager to tell me how to spend my tokens as they are to tell me how to spend my money. But it's all grounded in a weird scarcity mindset. I don't have a token limit! I'll never be able to use all the tokens I could easily afford.
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That means that rewriting ttfx in assembler doesn't mean I can't also do everything else I set my mind to. Because it doesn't cost any meaningful amount of attention or time. It's just tokens! That's why we can fix everything!
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