I've sold out

(mariozechner.at)

153 points | by doppp 3 hours ago

33 comments

  • inatreecrown2 1 hour ago
    I read most of the post, went to the linked project and still don't have an idea what this is about.
    • colinmarc 50 minutes ago
      Pi is a coding agent harness, like Claude Code, but significantly better and more elegant. Here is a good post describing it: https://lucumr.pocoo.org/2026/1/31/pi/

      I switched a few months ago and have not looked back. Unfortunately Anthropic blocked access from Claude Subscription users today, but that's a different story.

      • uxcolumbo 14 minutes ago
        I don't know much about the factors that determine why one AI coding harness is better than others. Is it system prompts? Or just personal preference in terms of the UX and there isn't actually a better output between using CC or Pi?

        So what makes Pi better than CC? Is it better than OpenCode?

        • ZeroGravitas 6 minutes ago
          There's a recentish YouTube talk when he introduces the concept and contrasts against those.

          My (oversimplified) summary: it's like vim versus an IDE. Good for tinkerers and obsessives who like small, sharp and customisable tools.

      • Jgrubb 34 minutes ago
        I switched about a month ago, looked back once for about 10 minutes and decided I'm officially done w CC. I didn't realize what a dull knife CC is until I tried a really sharp one, and that's Pi.
    • spicyusername 1 hour ago
      I think it has something to do with a core library that is or was used in one of the other AI-related tools that got some buzz recently.

      I'm not sure if this library or if the AI tool itself really matter all that much, but a lot of people seem to think that they do, or will anyways, which is probably why this post has no context. Because the author assumes that both the library and the tool are well known, but I think they're only well known by those in the AI world.

      You know how it is. You only know what you know, and it's hard to remember what it was like when you didn't know. When you're around people who talk about the same things all the time, it's easy to just assume that's what's everyone's talking about.

      There are so many of these little tools coming and going these days it's hard to keep track. Some of them might end up mattering, but most of them probably won't.

    • muragekibicho 39 minutes ago
      Taken verbatim "Maybe you've heard about the little app called OpenClaw. OpenClaw is powered by pi. That made me collateral of Peter's success. Especially after Armin thought it's a good idea to tell the whole world about the relationship between OpenClaw and pi on his blog."
    • stefan_ 7 minutes ago
      There are some people that are "way too deep" into what they think is the "AI ecosystem". The reality is that no such thing exists and most people opening Claude daily have never heard of their harness, tool, stack or whatever. It has about half the relevancy of "MCP", which is such a similar concept where hanger ons try to catch a steam train.
    • stavros 55 minutes ago
      Mario Zechner wrote Pi, an agent framework, and wrote Pi (yes the names are confusing), a coding harness (like Claude Code) on top of it. OpenClaw uses Pi the framework, so now Mario Zechner is joining Armin Ronacher's company.
    • LexSiga 1 hour ago
      Indeed. Also what a very annoying website.
      • duskdozer 47 minutes ago
        Looks like LLM-generated to me
  • dust42 26 minutes ago
    Context: Mario Zechner is the creator of the pi coding harness which powers OpenClaw. OpenClaw is made by Peter Steinberger, a friend of Mario Zechner. Armin is another friend who made public that OpenClaw is based on pi.

    Pi itself is a minimalist coding harness with a tiny 1500 token system message and only read, edit and bash as tools. I only discovered it a few weeks ago and it is surprisingly powerful with a local Qwen3.5-35B - especially as it allows to keep the context low.

    Mario's blog posts are not easily digestible (imho) until you have read a few of them but they have plenty of profound thinking. His blog is for me the first one in years where I have spent an hour to read several posts.

    Mario is deeply rooted in the OSS system and basically that is what he is talking about here in this post. That said, I have no idea what earendil is doing, except that it is based on pi.

    Edit: My personal take - "I've sold out" is very much Austrian style because actually it is the opposite. To quote one thing from the post:

    "Then Miguel and Nat approached us. Long story short: we sold RoboVM to Xamarin. A short while later Xamarin closed-sourced our open-source RoboVM core, quickly followed by Xamarin selling to Microsoft. Then Microsoft shut down RoboVM immediately.

    While there was some monetary gain, everything about this fucking sucked."

    So Mario did a lot of vetting to hopefully avoid this from happening again.

  • loveparade 48 minutes ago
    Understandable, I'd probably do the same in his position. Still sucks, we've seen this pattern a thousands times before and what happens next is pretty obvious.

    I was prototyping something with pi under the hood for a personal project, going to switch off it now.

    • theshrike79 14 minutes ago
      Like he iterates in the blog post multiple times: It's still MIT licensed, you can fork it to your heart's content. Or keep using the mainline and merge new features to your own fork.
    • realslimjd 15 minutes ago
      The company is from the person who created Flask which has remained very open and free. It might be a little too early to be cynical about this.
    • girvo 45 minutes ago
      > I was prototyping something with pi under the hood for a personal project, going to switch off it now.

      For what it's worth, it's pretty straightforward to recreate it I found, at least it's base idea. Readline w/ nice output is a bit of a pain, but still, doable, and if you don't care about that part of it, then the overall agent loop that you'd build on top of? You could build it, I promise.

    • DonsDiscountGas 38 minutes ago
      Or fork it?
  • xg15 1 hour ago
    In light of all the stuff about Thiel and friends, I'd really stay away from Tolkien/Middle-Earth themed startup names for now...
    • m_a_g 28 minutes ago
      Any naming related to LotR in the tech industry is a glaring red flag, including this company.
      • matsemann 18 minutes ago
        It's called out in the post:

        > Despite its Tolkien-inspired name, Earendil is not a tech company with fascist tendencies. Quite the opposite. They are basically well-meaning hippies in my book

    • gostsamo 8 minutes ago
      don't let the nazis take lotr from us
  • kator 21 minutes ago
    I think it's a bit sad that we often say people "Sold out". Sometimes, I agree, but often, I point out that until the lady at the grocery store stops asking me for money when I walk up to check out, I need to pay my bills to eat.

    I contribute to open source projects, but none of them to date could support me buying much more than a beer. If one took off such that I could "live" off it, I would be happy to leave my current job and dive all in. Until then, I just keep plodding along.

  • walthamstow 1 hour ago
    Why does everything have to be named after Lord of the bloody Rings
    • DoctorDabadedoo 1 hour ago
      Everyone wants to be the One to rule them all.

      I just want to retire in the Shire away from this AI non-sense (no jabs, just mild burnout).

    • xyzsparetimexyz 1 hour ago
      At least its this and not a book i actually care about. I shudder to think of a world where all the tech companies are called like 'Ghola', 'Giedi Prime', 'Heighliner', 'Harkonnen' etc
    • DonsDiscountGas 39 minutes ago
      Pi isn't
    • unsupp0rted 1 hour ago
      Because it takes years to get paradigm-shifting tech off the ground.

      You need hyper-obsessive nerds (the kind who were hyper-obsessive in school about D&D and LotR) to bring it to fruition.

      The non-LotR namers give up early.

  • raincole 18 minutes ago
    Mario having to write this many words to justify this decision alone is a red flag already. The fact I can't understand what Earendil is after reading this many words is an even bigger red flag.

    But who am I to judge? If I made a project as popular as pi I'd sell out so fast.

    • NoahZuniga 7 minutes ago
      There is variation in how comfortable someone is with the idea of "selling out". It seems to me that Mario is less comfortable than many other people in the AI space. How comfortable someone is with the idea of selling out doesn't really seem like a good signal for how bad something is.

      If Mario had instead just written: "I'm excited to work on the future of PI at Palantir." and nothing else, clearly this is worse?

      > The fact I can't understand what Earendil is

      From the article:

      > I learned a few things. My European brain thinks pi is just another small, mildly useful OSS project of mine with no commercial value. My peers in the space seem to think it has properties that make it stand out over the alternatives. VCs and big corps seem to think that pi has commercial value. Some demonstrated their conviction by sending term sheets or "dream job" offers.

      Mario thinks there's no commercial value, but clearly some VC people do. If you have the VC money, but don't have any ideas for how to justify commercial viability, why bother? If someone just handed me a big bag of cash and told you to just "do something", I could imagine coming up with Earndil. Make a nice landing page, write some nice guiding principles, and figure out the AI stuff later.

  • _pdp_ 1 hour ago
    I went to Earendil website and github and I still don't know what this is. Someone care to explain?
  • stantonius 18 minutes ago
    You know, there aren’t many people whose communication style, approach, and contribution history earn my confidence so completely. I can probably count on two hands the people I hold in that regard in this industry. Mario and Armin are two of them. It’s incredibly hard to build trust online these days, but there’s something about this Viennese crew that I like.

    This was a solid letter to the fans. I get why it’s disappointing to some, but it sounds like it was the right move for them personally. For people who’ve earned that kind of credibility, I say congrats on the move.

  • solarkraft 38 minutes ago
    As somebody who considered building with Pi, I think I like this. I can imagine some good coming out of this for the ecosystem.

    And if they mess it up, it’ll be easy enough to fork.

  • ramkarthikk 1 hour ago
    Been following Mario and Armin (much longer), and this is a good move for all parties involved. Would have been bad if Pi went the same direction as RoboVM (mentioned in the post). Earendil, as a company, is not clear for me yet but one of the projects Armin is working on that's part of this is Absurd[0], which is also an interesting project. Absurd, like Pi, is minimal and let's you have full control.

    [0] - https://github.com/earendil-works/absurd

  • doginasuit 24 minutes ago
    Piloting OSS is all the work of any other business and more. It is a more challenging path and all your decisions are out in the open for scrutiny. He made a decision to put his family first, and I respect that. It seems like there is an alternative to selling out, trusting the project to other people committed to OSS. The beauty of OSS is that this path is still available for people.
  • swah 1 hour ago
    I guess Earendil sounds a lot like Anduril - had to check and now I understand they are not defense contractors!
    • throwingrocks 22 minutes ago
      I had to check as well. Their logos are also similar.
    • teekert 46 minutes ago
      Got similar vibes from that name but because it sounds like a LOTR thing and that (sadly) makes me think Palantir.
      • jfengel 14 minutes ago
        Very much an LOTR thing.

        Tolkien stole the name from an Anglo Saxon poem, with a somewhat unclear meaning. His version of the story is woven through lots of his work, from the very earliest days. You could view all of Middle-earth as elaborating on his attempt to assign a meaning to it.

  • moffers 1 hour ago
    You didn’t sell out, you bought in! Really excited to follow this journey, Pi has been my favorite piece of software to use in the last six months.
  • ontouchstart 1 hour ago
    I found out last night via pi.dev. And the new repo of pi didn’t exist yet.

    I have been working with pi-mono locally for a few months now. Great code base to study. Much higher quality than CC. (I have posted a gist analysis before.)

    Will keep an eye on the work of these talented engineers and entrepreneurs. Good luck guys!

  • collabs 1 hour ago
    > The one thing that differentiated Armin from other internet trolls was the way he conducted himself in these heated discussions. He was never emotional or aggressive. Our discussions would either end in cordial disagreement, or a newfound common understanding. That's extremely rare on the internet.

    Ah haha so armin is also an Internet troll, right? For example if I said, one thing that sets the "Concorde apart from other commercial airliners, ..." I am saying the Concorde is a commercial airliner.

    • dathinab 1 hour ago
      yes, but ;)

      tbh. it sounds a bit like he himself was somewhat of an internet troll during that time

      and it might not be quite the same definition of "internet troll" I tend to us

      like it sounds a lot like a definition of "toll" like

      - "very vocal, convicted of their opinion, non stop discussing(/neutral) potentially for the sake of discussing(/neutral)"

      while I tend to associate more something like

      - "intentional annoying, non stop discussing for the sake of annoying people, often using dishonest discussion techniques, potentially outright harassment"

    • latexr 1 hour ago
      Another one is:

      > Colin is pretty OK for an ex-finance dude

      Making it look like the author disapproves of finance dudes but finds Colin tolerable yet still within the expected parameters of badness.

  • xyzsparetimexyz 1 hour ago
    The ear endil website runs at like 2fps on my phone. Still have no idea what the company does
  • dra3ks 1 hour ago
    Waiting for the Anschluss of the Austrian School of Vibecoding to ClosedAI. They already got ClosedClaw.
  • sva_ 1 hour ago
  • czottmann 1 hour ago
  • anilgulecha 2 hours ago
    Incidentally pi stopped working today - under the Claude subscription ban for other harnesses. Awaiting a plugin that fixes it.
    • politelemon 1 hour ago
      How is anthropic enforcing the ban, are there identifiers sent from harnesses?
      • budududuroiu 1 hour ago
        From the Claude Code codemap leak, it seems like Claude Code is sending metadata about the binary that is sending HTTP requests
        • Maxious 58 minutes ago
          It's got a little zig mystery blob that does the hashing. Messing with that would run afoul of DMCA anticircumvention right?
      • dathinab 1 hour ago
        they but "minimal dump DRM" into their client (supposedly, from people which leaked the linked source code, no me)

        easy to circumvent

        but would fall under "circumventing security protections"/"hacking their API"/etc. And due to the sometimes very unreasonable laws the US has in that area they can use that to go after anyone providing a workaround.

        Through that maybe won't work well for the EU, I'm not sure how much the laws have been undermined in recent years but we had laws which made it explicitly legal to circumvent DRM iff it's for the sake of producing compatibility (with some caveats).

        • pocksuppet 47 minutes ago
          I think the law just says that it's legal to circumvent DRM for compatibility - they don't define DRM or compatibility. It's one of those vague laws that you only know if it matters when it gets tested in court.
      • hombre_fatal 1 hour ago
        I think if you were going to send the same harness/prompt traffic as Claude Code, then you’d just use Claude Code. Alternatives generally are trying to do something different, thus are going to be easy to detect.
      • rafram 1 hour ago
        I wouldn’t imagine that fingerprinting them based on request patterns is very difficult.
        • throwaw12 1 hour ago
          until your account gets banned.

          you can figure out the fingerprinting today, but if they change it tomorrow and wait 5 months to force update everyone, they will catch you and ban

      • dist-epoch 1 hour ago
        They can just look at the system prompt or tool definitions.
    • swah 1 hour ago
      Just pay for credits :(
  • rullelito 1 hour ago
    At least they didn't call it Open pi.
  • embedding-shape 57 minutes ago
    > I think Armin and I first met 14 years ago, on the r/austria subreddit. We did not align politically on many things, him being a "hyper neoliberal" and me being a "social democrat" (at least according to what I feel was our mutual impression of each other). Any time I saw that @mitsuhiko handle in a thread, I felt the urge to tell someone they are wrong on the internet.

    > Over coffee, Armin and I found we had more in common than we thought. Not only politically, but also in the way we think about software, and OSS specifically. In my recollection, we became actual friends that day, even if we didn't meet again for many years in real life.

    This is probably the "highest value" part of that whole blog post, as this is something I see so frequently in the real world. People don't give others a chance to just be humans with conflicting views and opinions, and instead try to assign a label to the other part as quickly as possible, then they apply the same "rules of engagement" with that person, as anyone else who deserved to get that label. But once you forgo it, you realize how much you have in common even with your "worst enemies".

    It goes both ways too, and the more closed up you are in that regard, others will treat you the same. But you miss out on so many interesting thoughts, ideas and conversations, when you limit yourself to labels and not realizing how diverse and interesting even the most "boring person" could be, given the right questions and the right conversation underlay.

  • heliumtera 41 minutes ago
    That's what happens when you sniff your own farts too much, folks.

    In his head, it's the biggest selling pitch ever. No one can even begin to understand that your selling, what your product is...

    Stop using llms you're all worse then crack addicts

  • deaux 1 hour ago
    This is so disappointing. Finally we had a fantastic, fully OSS, non-profit harness. Very extensible, well-made, minimal, untainted. None of the baggage of OpenCode both in terms of codebase as well as its.. "passionate" leadership, to put it mildly.

    > Earendil is a public benefit corporation

    Ah, so like OpenAI then.

    > But I've also learned what I do not want. I do not want to build my own company around pi. We have a four-year-old kid. I want to watch and help him grow up as best as I can. This is, first and foremost, what I want. Everything else is secondary to that. In the past 2 months, he cried a lot because "daddy isn't here". I never ever want to experience that again.

    That's completely fair. And above it, you sketch exactly what you could've done instead to solve this:

    > I mostly handed over the reins to a beautiful team of core contributors in 2016, who to this day keep the project well maintained. I never commercialized libGDX, unless you consider it commercialization to build a proprietary piece of software like Spine on top of it.

    Sounds like the above worked great, and this would've been the obvious option to do once again.

    > part of me wants to take this further. That includes building a team. It also includes commercialization to feed the team, done in a way that doesn't repeat the shit I lived through with RoboVM.

    So this is the only part that really answers the "why" - you want to earn a living from working on Pi, and presumably (?) believe you can't achieve that with OSS. I think you're wrong, and belong to the 0.001% of OSS projects that can earn a very nice living from working on Pi without taking this step. I'm not exaggerating, I would fully agree that the number of OSS projects where this is possible is exceedingly small. But this is one of them. If you don't believe that then fair enough, I guess, though I'm curious why you believe that. Because there clearly exist a good number of OSS projects that make their lead developer a very comfortable living. Which condition do those projects satisfy that Pi doesn't?

    If that's not it, then the article doesn't really answer the "why" despite lots of text that appears to do so.

    You obviously owe me, or anyone really, nothing. So far all you've done is contribute for free. But if you're going to write this kind of article to clearly do a little bit of soul searching, assuaging fears and "make things public" to stop them weighing on your mind, then it looks better to go all the way and state things in plain terms.

    • rob 9 minutes ago
      [delayed]
    • colinmarc 46 minutes ago
      I don't think Earendil and OpenAI seem very similar. The former is a tiny startup of friends working on exclusively open source stuff.
  • wewewedxfgdf 1 hour ago
    Such an indirect writing style.

    I know people hate LLM writing but at least it gets to the point and gives some background context. I have no idea what this guy is talking about. It's an article aimed at people who know him personally, it seems.

  • colesantiago 1 hour ago
    Mario, You are allowed to sell out.

    Just take the negative reactions, (if any) as warnings. They have seen it all before like you have:

    + VC funded

    + LoTR name (really?)

    + “We are not evil I promise”

    And the biggest red flag:

    > None of the early-stage investors are on my naughty list, quite the opposite.

    For now.

  • sunaookami 2 hours ago
    Happy for Mario, Pi is the best harness I've ever tried. But overall disappointed by this decision. "This time everything is different" until it's not.
    • Maxious 2 hours ago
      Things can be worse - this decision means 2 out of the 3 principals of the Vienna School of Agentic Coding have not sold out to OpenAI
    • ngrilly 52 minutes ago
      I don't understand. Why the disappointment? Pi is still open source. Nothing is changing. Earendil's majority owners have a perfect track record when it comes to open source. Armin is a super star in the Python and Rust ecosystems.
    • rasmus1610 1 hour ago
      I mean what is the alternative here?

      Mario maintains the project pro bono, which is only possible because he had an exit a couple of years ago. I believe it is a lot of work making sure that the quality of the codebase doesn't detoriate with the onslaught of slop that is hitting open source projects right now.

      Additionally, I have massive respect for Armin and I don't believe Earandil is your typical VC startup that wants to grow no matter what.

    • patleeman 1 hour ago
      I’m not disappointed. It seems philosophically the teams are aligned and Pi as a project can continue and be supported. It’s a better outcome than most could expect.
    • direwolf20 2 hours ago
      In a world with certain incentives, one must always expect people to act in accordance with them. If you don't like it, change the incentives or cope.
      • Morromist 1 hour ago
        I can just see you telling that to a slave in 1830. What? You don't like slavery? Don't you see that you have to expect the slave owners to act in accordance with the incentives god gave them and force you to gather cotton until your hands bleed? change it or cope dude. Or someone watching from the hills as the horde of Gengis Khan torches their city and puts everyone they've ever known to the sword - those mongols are activing in accordance with incentives! Change it or cope!
        • pocksuppet 48 minutes ago
          The slaves did in fact change the incentives by staging a civil war.
          • infinitezest 1 minute ago
            What an incredibly creative retelling of history
  • ablation 31 minutes ago
    What the hell is going on with all these weird tech bros naming their companies after Tolkein mythos?
  • shevy-java 1 hour ago
    > You cannot imagine what people called me on social media and via email, despite me having zero control over the situation

    Well, perhaps they were right. Naturally when it comes to open source, people don't have any control over what others do with their own time. If they do not contribute financially (or their own time into improvement a project) then even less so. Still, it is a decision that has been made because of prioritising one's own personal goals. This is fine; but to expect that others share the same 1:1 opinion is not logical.

    > Like me, he thinks open-source and open protocols are a necessity, not just lipstick on a corporate pig.

    I think the description is also painting lipstick on a pig. I've seen too many who promote open source but then sell out suddenly. Github? And what is the influence Shopify is doing in the ruby ecosystem? But anyway, that is all their own personal thing. To assume any community needs to share those personal success stories ... it makes no sense.

    > Earendil's products are built on top of pi.

    Ok, so ... that is lipstick. Aka promo. I don't understand why he critisizes others but then does the same himself. Which is fine; I just don't get the assessment he is doing.

    > Despite its Tolkien-inspired name, Earendil is not a tech company with fascist tendencies.

    Here he refers to Palantir clearly. Thiel is abusing Tolkien IMO. Or he sees himself as Sauron or whatever. But he is more a clown Sauron, just like his mad orange king is.

    > who think software, and specifically AI, should serve humans, not the other way around.

    Does AI serve humans? Or does it serve those who control it?

    > Finally, and most importantly to me, almost everyone on the team has kids.

    So what? I mean, many people who are not so well in the head, had kids. I am not saying that refers to the blog author here, mind you - I refer to the "my criterium is that all have kids". Pity on those fools who don't have kids then?

    > pi is owned by Earendil, the company.

    Ultimately people will derive value from it, or not; but it is clearly a private project. Even if open source, we can see that with chrome + Google. Google makes most decisions. Yes, you can build on top of it; I use thorium right now, for instance. But I am not fooled one second who effectively controls a project here.

    Best luck of success to him.

  • strimoza 32 minutes ago
    [dead]
  • moralestapia 1 hour ago
    >And if you ever feel like we've lost the plot, the fork button on GitHub still works. Always will.

    Lol, the attitude. 180 degrees from the community that gave him everything he has. Classic.

    • jen729w 1 hour ago
      Oh, catch yourself. Tell me you wouldn't do the same for your family.

      I run a tiny thing that a lot of people like. Its licence is permissive: if I 'sold out', nobody who is using it today would have to change a damned thing.

      And you know what? Call me if you wanna buy it. Because here's my priority list:

      1. Looking after my family.

      2. Looking after yours.

      • moralestapia 55 minutes ago
        Lol, this is like the fourth time you've edited your comment which started as 1. Mine / 2. Yours. Take it easy, the crowd isn't going to come down hard on you.

        There's nothing wrong with making money, I'm 100% all-in on capitalism.

        It's just the sudden change in attitude, particularly when people jump to the polar opposite they've preached their whole lives. Some say it's wise to change your mind, I just find it repulsive.

        • ianm218 51 minutes ago
          Did he preach open source all his life? He seems to have been a long time open source builder who has also previously sold a project.