The AI & Tech Society by Danar
Aug 2, 2026 · 17 min · 12 segments
David Heinemeier Hansson, creator of Ruby on Rails and CTO of 37signals, went from AI coding skeptic to agent-first developer. This episode breaks down DHH’s Claude Code workflow, how he used AI…
He's a craftsman who cares intensely about the quality and beauty of code and who resisted these tools until they met his standard.
What changed was a specific technical inflection point.
He points to the release of Opus 4.5 in November 2025 as the moment.
In his words, it produced code he wanted to merge without very much, if any, alteration.
And if he did want an alteration, he could tell it, and it would remember, and it would not make the same mistake next time.
So it wasn't a gradual drift, it was a threshold.
a threshold.
That's the pattern we keep seeing with skeptics who convert.
It's not that they slowly warmed up, it's that the tools crossed a line where the output finally met their bar and then the switch flipped fast.
DHH said his shift from I'm code first everything to now I start with the agent happened within weeks of that release.
He's a craftsman who cares intensely about the quality and beauty of code and who resisted these tools until they met his standard.
What changed was a specific technical inflection point.
He points to the release of Opus 4.5 in November 2025 as the moment.
In his words, it produced code he wanted to merge without very much, if any, alteration.
And if he did want an alteration, he could tell it, and it would remember, and it would not make the same mistake next time.
So it wasn't a gradual drift, it was a threshold.
a threshold.
That's the pattern we keep seeing with skeptics who convert.
It's not that they slowly warmed up, it's that the tools crossed a line where the output finally met their bar and then the switch flipped fast.
DHH said his shift from I'm code first everything to now I start with the agent happened within weeks of that release.
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