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David Heinemeier Hansson

What David Heinemeier Hansson thinks about Anthropic

@dhh · 154 positions · 10 changes of mind

Creator of Ruby on Rails, CTO of 37signals, and creator of Omarchy.

Everything they publish, on ppll ↗

David Heinemeier Hansson did not write this page.

We collected these quotes from things they published elsewhere, and every quote links to where it was said. They have no account here and have not endorsed this site. Quotes are word for word; the short line under each one is our own restatement, not their wording. Their own site. Is this you? Claim it or ask us to remove it. Or tell us what is wrong here.

8 dated positions, 2025 to 2026, in their own words. Our reading of what David Heinemeier Hansson has said — not written or endorsed by them.

  1. Our readingThe release of Opus 4.5 in November 2025 was the dividing line, because it was the first time an agent produced work uncannily close to what its user would have written themselves.

    Their wordsThen we get to November 24th, 2025. Opus 4.5, to me, was the dividing line, where suddenly... I didn't even try it on the 24th. I think I tried it on the 26th. I give it a couple of tasks, and I realize that the quality of the output is uncannily close to what I would've written.

    ↗DHH: Future of Programming, AI, Agentic Engineering, Vibe Coding & Linux | Lex Fridman Podcast #501youtube.com 2nd of 41 in this recording

    Interesting

  3. Our readingFable is the best AI model in general right now, and Opus 5 is the second best.

    Their wordsBut to answer your question, the best model in general right now is Fable. The second-best model, in my opinion, is Opus 5.

    ↗DHH: Future of Programming, AI, Agentic Engineering, Vibe Coding & Linux | Lex Fridman Podcast #501youtube.com 24th of 41 in this recording

    Interesting

  5. Our reading · no longer heldOpus is the best frontier model, and the one to start with.

    No longer holdsBut to answer your question, the best model in general right now is Fable. The second-best model, in my opinion, is Opus 5.

    SaidIt seems to be changing constantly.

    ↗DHH: Future of Programming, AI, Agentic Engineering, Vibe Coding & Linux | Lex Fridman Podcast #501youtube.com 25th of 41 in this recording

    Interesting

  7. Our readingYou can keep using a company's product while disliking its politics; refusing everything you disagree with is not required.

    Their wordsThe world would be so fucking boring if we constantly sought 100% compatibility in our opinions and in our politics. And when it comes to my code generator, which is what Claude is, I don't need it to share all my politics.

    ↗DHH: Future of Programming, AI, Agentic Engineering, Vibe Coding & Linux | Lex Fridman Podcast #501youtube.com 30th of 41 in this recording

    politics

    Interesting
  8. 5 months earlier

  9. Our readingHis opinion of AI never changed; the circumstances and the facts did, when agent harnesses and Opus 4.5 made the tools good enough.

    Their wordsI don't actually think my opinions have changed. What have changed is the circumstances and the facts

    ↗DHH’s new way of writing codeyoutube.com 6th of 20 in this recording

    Interesting

  11. Our readingOpus is the best frontier model, and the one to start with.

    Their wordsStart with Opus. I'd say start with Opus. It's the best frontier model.

    ↗DHH’s new way of writing codeyoutube.com 8th of 20 in this recording

    Interesting

  13. Our readingAnthropic pulling Claude subscriptions from third-party harnesses like OpenCode is a mistake: playing a single match in a game of many rounds.

    Their wordsSo then they started thinking a little bit in that like the game is single match instead of thinking it's multiple rounds and yanked their subscription from open code.

    ↗DHH’s new way of writing codeyoutube.com 9th of 20 in this recording

    Interesting
  14. 9 months earlier

  15. Our readingThe prediction that 90% of code will be AI-written by the end of 2025 deserves skepticism, though manual programming may yet become a horse: ridden for love, not transport.

    Their wordsThe Anthropic CEO seems to think that 90% of all code by the end of the year is gonna be written by AI. I am more than a little bit skeptical about that, but I'm open-minded about the prospect that programming potentially will turn into a horse when done manually.

    ↗DHH: Future of Programming, AI, Ruby on Rails, Productivity & Parenting | Lex Fridman Podcast #474youtube.com 11th of 36 in this recording

    AI writing

    Interesting