Using an open model feels surprisingly good

(matthewsaltz.com)

82 points | by msaltz 1 hour ago

12 comments

  • wps 41 minutes ago
    The reason Claude code is so popular is because it’s really good at taking super vague human prose “Claude build me a million dollar SaaS”-type prompts and spitting out thousands of lines of code which cover tons of surface-level edge cases, build in tons of functionality, etc

    The smaller/open models are less good at that. But that’s not how software development is done. You don’t prompt a whole app and be done with it. If you’re using it as an aid to traditional software dev, iterating on small, targeted functions, GLM works as good if not better than Claude. Anthropic expects low quality prompts. If you rubber duck GLM, you get absolutely pristine output in most cases.

    • Gigachad 38 minutes ago
      Personally I've found Deepseek v4 Flash to be as useful to me as Opus. But I don't do these silly one shot tech demos. I have the technical understanding to ask for exactly the change I want with the right terminology. I loaded up some credit on openrouter and it took me ages to hit $1 in spend.
      • wps 32 minutes ago
        I’m the exact same way. $15 on openrouter lasted me so long it would’ve got me fired at FAANG. Despite this, my number of commits is dramatically higher. Small, beautifully scoped changes is just good software development, and good for the wallet as well.

        I think the issue is that no one is content with incremental progress. We all know one shots are mostly possible, so the age of the personal project is kind of over. There’s no motive to invest dozens of hours getting a working prototype when Claude can give you something right now. So you can’t make small changes until you have that codebase in place already. You’re forced to make sweeping changes if you use AI from the beginning. And it’s not like it matters, there’s no personal attachment to any one part of the code, it’s not even seen!

        • Gigachad 25 minutes ago
          I can see why Anthropic is freaking out right now. China has undermined their whole business. AI models will be basic commodities where hosting providers earn a tiny margin over the raw costs rather than the predicted fortunes from being the gatekeepers to the technology.
          • basch 18 minutes ago
            the writing should have been on the wall when meta did it with llama. it was very apparent that one or two entities could release a "good enough" product into the wild commoditizing the frontier of yesterday.
    • drnick1 23 minutes ago
      Frontier models like Opus 5 are also extremely good a "research" in an academic sense, including combining elements from different fields or literatures and creating something quite novel sometimes, publishable even, from vague/speculative prompts. This is on top of implementing known methods in about 1/100th of the time it would take by hand, allowing for fast exploration of ideas. They can also roll things out from scratch, removing essentially all third party dependencies from your code base, other than Numpy or Scipy. This really buys you a lot of clarity and/or performance sometimes.
  • loufe 56 minutes ago
    This is only a thinly veiled ad. It's fine, I was curious about this exact setup, anyways.

    What would be useful is a cost metric. I'm curious how much I'd be willing to spend as a premium to not have those companies piping my conversations directly to the NSA. Maybe only some conversations? Claude and OpenAI are heavily subsidized, by all accounts, so Kimi K3 on a private endpoint might end up costing more or less - that's what I want to know.

    • aprilnya 11 minutes ago
      With OpenRouter this is pretty easy to see - each model page has various providers listed along with an icon marking providers with zero data retention, and the price. You can also set up an account-wide "guardrail" to prevent routing to non-ZDR providers.
    • mayank 44 minutes ago
      I was curious about the cost angle too, i.e. how much "free" coding agent I can get for what cost. Here's the research by Fable if you're interested: https://claude.ai/public/artifacts/2c9a5001-0b7e-4944-beb1-9...
  • arjie 56 minutes ago
    To be honest, I am surprised by how good DeepSeek V4 Flash is. I use Claude Code and Codex on Claude 5 Opus and GPT-5.6 Sol most of the time, but when I use DS V4 Flash I don't feel like it's really that bad. And with oh-my-pi and just plain pi it's pretty good. To be honest the frontier models are much better at tool calling so in an assistant flow they're better but I did the dumb thing and optimized the harness for the model instead, rewriting the tools so they match what it guesses at, and DS V4 Flash does just fine.

    The TTFT and tok/s are much higher on the small model so that makes it competitive for a bunch of things. It feels like what old Sonnet used to by the end of last year which is honestly damned good.

    • pimeys 43 minutes ago
      I wrote my own OpenClaw one weekend and I am running it as my assistant through Matrix with DeepSeek v4 Flash (and Qwen). It probably costs me about 2 dollars a month and is even more useful than ChatGPT would be due to me having full control on what tools it has access to.

      I can do things like take a photo of a doctor's note among add the appointment to my calendar, send a PDF to my archive tagged, OCR'd etc, search info from internet, look data from Google Maps.

      I can even integrate this to home assistant and talk to my agent with my open source Alexa-like system.

      • arjie 21 minutes ago
        Haha! Love to hear it. That's exactly what I have too: a claw-like[0] system which I originally used Sonnet for and now use my DeepSeek v4 Flash with.

        In my case, I was foolish enough to run it all on my hardware which is pretty damned fast but has a duty cycle of 5% and runs idle most of the time. It's definitely better done via API.

        Tell me more about the Alexa-like system! I have mine at home on a custom OpenWakeWord model trained on the word 'Aurora'. And I, too, have it hooked up to Home Assistant. I have a bunch of Eufy E21 baby cameras mounted on the walls[1] so it has vision through the house. The vision model uses GPT-5.5 on the subscription because I haven't yet set up a Qwen or Gemma multimodal that can see.

        With Frigate on my home server I can even watch for events like my daughter waking up! And at night the agent sends out the vacuum if we've cleared the floor of baby toys. I feel this close to the dream of sci-fi AI. Because I auto-forward a bunch of my email to it etc. it knows about what's going on with me.

        My wife will sometimes ask the agent information about me etc. and it's way easier to get a fast response rather than waiting for me to see the message etc.[2]

        0: https://news.ycombinator.com/item?id=47538158

        1: https://wiki.roshangeorge.dev/w/Blog/2025-12-01/Grounding_Yo...

        2: https://imgur.com/a/tP12lfj

      • mayank 35 minutes ago
        Oddly enough, I did the exact same thing this past weekend, for a couple hundred usd in Fable overage.

        It was truly remarkably easy to build and package it exactly to my whims, in my case as a single docker container with a process reaper that runs llama, my Go code, tts, chat harness, browser in xvfb, and even a mailer daemon. With Gemma, it even runs on a RPi 5.

        What’s absolutely wild to me is that over a couple hours, I could probably have it import parts of Home Assistant for my devices directly, and do other wacky stuff in what is essentially software for one.

  • wxw 4 minutes ago
    > The best way I can describe it is like opening vim after spinning a bunch of time in a big fancy editor.

    Harness-aside, I get this feeling sometimes when I swap from a big frontier model to something more nimble like Composer.

    I can get into a better thinking and q&a loop with fast models, similar to how I can flow through a file more easily with vim.

  • m_ke 1 hour ago
    GLM 5.2 feels better than Opus and K3 is as good as Fable.

    Now I can't wait for someone to distill K3 into a Qwen 3.6 27b or Poolside S 2.1 sized models for a proper fast local Composer 2.5 replacement.

  • sudo_cowsay 52 minutes ago
    I love OpenCode and the blankness of it too. Clean, light, and manual. It's a good change of pace from what we are used to on the internet (very cool but slow). Also, can you hmu with that modal plan XD
    • roywiggins 45 minutes ago
      Pi Agent is even leaner feeling, it's worth a try.
  • khimaros 1 hour ago
    this seems to be an advertisement for Modal. is it really your own infrastructure if the hardware is leased?
  • spicyusername 33 minutes ago
    Something I've been thinking about a lot is that this new technology's primary UI is natural language. Human's are REALLY primed for natural language.

    If it sounds good it must be good. The code this new model writes is incredible! It told me so!

    • adithyassekhar 1 minute ago
      It did say it was an unusually clean codebase.
  • jdw64 1 hour ago
    Actually, if you break tasks down into small enough units, there's not much difference between open models and closed models. The only reason to use agents is the hope that they'll work with natural language input—but that's where the difficulty lies.

    For example, if you modify things at the level of small functions, open models seem to perform just as wel

    • paradox460 53 minutes ago
      Yup. Been using big expensive models like opus, gpt, or glm for planning, then switch to something like gpt-oss-120B on cerebras and watch it fly. Total cost will be less than $5 for even very large tasks
      • jdw64 34 minutes ago
        People tend to think alike. I work in much the same way.First, I write the draft myself, then let AI handle the revisions, and finally run it through an open model in small units before I check the results.
    • verdverm 29 minutes ago
      I think this is where they say "loop engineering" / orchestration comes in, though I would also include context/harness engineering in the toolbox
  • nujabe 55 minutes ago
    This is such a poor quality post, reads more like a diary entry than a substantive technical post.
    • PontifexCipher 49 minutes ago
      • nujabe 33 minutes ago
        ??

        Edit: I see, had typo last word of sentence was meant to be “blog”

      • sroerick 34 minutes ago
        lol
    • aprilnya 10 minutes ago
      I think that's what it's meant to be...
    • Gigachad 36 minutes ago
      I will take 5000 "diary entry" blog posts over LLM generated walls of text that say nothing.

      People need to learn to just post the prompt rather than the LLM output which just fluffs the prompt.

  • irishcoffee 1 hour ago
    It surprises me that this concept took as long as it did to gain traction in… hacker news. 15 years ago folks here were compiling kernels and gentoo distros. Lately it’s been “you should just pay the man, it’s cheaper than running these things yourself”
    • loire280 58 minutes ago
      Rolling your own Linux is nearly free and could be done on any computer you had lying around. Dropping >$5k on a computer to run a local model (badly) doesn't really scratch my "hacker" itch. The author of this article works for an AI infrastructure company and ran Kimi K3 on their infrastructure - this post reads like marketing.
      • irishcoffee 16 minutes ago
        You can run a small model on almost any hardware, for free, and just play around. It doesn’t need to be some “frontier” (whatever the hell that means) model by any means. Grab some new tech and slap it on whatever hardware you have laying around, see what you think.

        Making it about the hardware costs is not the play, they’re not an actual barrier.

        • anuramat 1 minute ago
          > you can run a small model

          but why?

    • eru 53 minutes ago
      It's fairly easy (and cheap!) to run your own email server, but most people don't bother and just use gmail. And rightly so!
    • brcmthrowaway 1 hour ago
      Rsync the dropbox, dude
      • irishcoffee 14 minutes ago
        Still working on the fields medal, I’ll give that a shot next.