Ville Säävuori

Ville Säävuori

@uninen.net

Oldskool Web Monkey and a DJ. Posting about the Web, Python, Django, TypeScript, Vue. Founder of slipmat.io Documenting my learnings at http://til.unessa.net Personal homepage (in Finnish) at https://www.valveilla.net

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I used to write small Windows apps with Delphi as a teenager. Left Win and native apps decades ago but LLMs have gotten me to dabble with native macOS and iOS apps jus for my own use. Full-on slop vibecoding is fun when you really don't need to care about the code at all.

TIL: the Claude banked "full reset" does *not* change your weekly cutoff at all nor does it remove the 5h limits. So it's effectively a single 5h reset 🤦‍♂️

I wonder if there's something seriously wrong with me as I just can't stop yelling and swearing at poor LLM models when they keep repeatedly failing. I mean, why does prompting better never really seem an option worth considering 🤔 I've never sworn to a human colleague!

Claude refuses a prompt to add "invisible comments" to documentation (to make it understand the context properly wo messing up the user instructions) but happily adds "code comments" 🤦‍♂️

Claude: I recommend starting with steps 1 to 3. Me: Just do all the 20. Claude, in 25 minutes: All done. No matter how much I work with these, it still feels magical every time. Also, Opus 5.5 continues to be the Claude model I'd be waiting for so long 🙏

Remember the times when we used scripts to concat a repo into one file that was easy to feed to a LLM conversation as context? And then Claude Code was released w API prices and no one saw the point bc "ls costs $0.1 - game over devs". What a ride!

Teaching Sol to write. Iteration 1: "Use stable documentation entry points or local source references for durable guidance. Version-pinned release/tutorial URLs belong only in explicitly scoped research citations, not evergreen instructions."

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Final text (by me, I gave up): "Don’t use version-specific links as references in comments or documentation." #notquiteagi

Teaching Sol to write. Iteration 1: "Use stable documentation entry points or local source references for durable guidance. Version-pinned release/tutorial URLs belong only in explicitly scoped research citations, not evergreen instructions."

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Iteration 4: "Link to the software's maintained official documentation. Pages for one release stay tied to that release and can mislead readers after upgrades."

Teaching Sol to write. Iteration 1: "Use stable documentation entry points or local source references for durable guidance. Version-pinned release/tutorial URLs belong only in explicitly scoped research citations, not evergreen instructions."

Sol 6.1 working at 9 tok/s matches kind of well with its insufferable take on .. well, everything. It's so interesting that these models have similar quirks and rough edges like most brilliant developers do. And, learning to work w new ones every other week is equally taxing.

Pretty sure I've yet to have a conversation w Sol 6.1 that didn't include "FOR FUCKS SAKE". So far hands down the most annoying SOTA model to work with. ..but on a positive note, it's no longer 14 tok/s, the prommised 50% speedup seems to be legit. 28 tok/s ftw 🫠

Wired: seeing models select code mode in Pi for appropriate tasks and succeed so easily is *cheff's kiss* Tired: asking for code mode and realizing you're not in Pi bc Anthropic is still forcing you to use their shitty tools.

I appreciate the tool and the work put into it but I do *not* appreciate that public blog posts (or any comms directed to humans for that matter) are written by Claude. It just reaks of not giving a shit and feels disrespectful. Looking at you pnpm

Pi has taught me that I want my dev tools to be easily malleable. Omarchy seems interesting to me for the same reason. It's not perfect but it's *way* better than the catastrophe of Tahoe. Sure, can't run Logic but I can run --and tweak-- all my dev tools.

Say what you say about GitHub but at least the "you've used 90% of your CI minutes" email is sent reliably about third in for every month 👌

One thing that I love about LLMs is how they drastically cut down the "how tf does this [random complex tool] work"-time that used to totally drain you. Being able to Just Build is so rewarding 🎉 ..brought to you by "just signed and notarized an Electron app in CI in 3 mins"

What's happening w Codex usage today?!? Had 50% usage left this morning, after TWO short Pi sessions (worth maybe ~2%) I'm suddenly at 0% and the analytics usage graph shows 0 for today 🤔😅 wtf Grateful for manual resets now! These tools are soo randomly weird sometimes.

LLMs have given us the ablity to fix broken sw and do those big refactors that just weren't possible before. @slipmatio codebase is ~260k loc but it feels very malluable as even big back+front refactors take only days instead of months. Software Engineering laws have changed.

The final boss of household assistant robots is picking blueberries from a forest. By the time that becomes reality, ChatGPT models will have been writing perfect prose and docs for years.

Hands down worst part of finding LLM fuckups from production code is understanding that You are the one responsible for making them 😞

I've been thinking about the long-term implications of vibecoded production code. We've also had codebases build by That One Dev, no one else in the team had any clue, everything was a mess and impossible to work on. It never worked. Now we've been automating exactly that 😬

I initially thought the LSP in OpenCode was a great idea until @badlogicgames taught me it really isn't. But. Why tf hasn't anyone come up with a tool-like LSP that would make "rename this to this" a deterministic O(1) operation instead of a 25 min struggle?!

These resets are getting out of hand. Here's an idea for the flicker company and forprofit company: start selling 5h timeouts as well. "Claim your timeout and we'll lock you out for 5 hours."

5.6-sol is so trigger-happy that had to write a Pi extension just to give it extra system message to tame it down and lower the probability of it doing anything stupid. no idea if this works but this is better than any sandboxing I've tried.

I love that current SOTA models know the @simonw's Lethal Trifecta by heart. Fable wrote: "The design goal is breaking the lethal trifecta (private data + untrusted content + external communication) at every layer."

Sol on xhigh found a real security issue from a large-ish Python codebase in ~4minutes that all previous models have missed -- pretty good. ..it continued for another ~30 mins, and decided to continue in a totally separate (but related) repo and found an issue there 😅

Trying to get GPT-5.5 to write good docs feels like trying to get your dog to eat the medicine; there's absolutely zero chance it'll work, no matter how hard you try.

Days w/o GH Actions incidents: 0. A workflow in a random small repo that runs Playwright in ci got stuck installing it and spent ALL my monthly CI minutes in one failed 6h run that never finished bc some network issue 🤦‍♂️

Been thinking about code, carpentry, and other crafts. Code is IMO definitely in "monkeys should not do it" category but hand-crafted carpentry still feels valuable over CNC-machined stuff. Still, there's *something* in hand-crafted software that we shouldn't lose.

Two things I love most about working with LLMs; 1) it's immediately clear if your code is unintuitive or written in a non-obvious way as LLMs struggle with it no matter how much you try to document it 2) following best practices finally pays out in full 🎉

First few 5h sessions w Opus 4.8: 1) Extremely annoying and hard to work with due to unpredictable behavior. Ask it to "load plan implementation skill", it loads it and then starts using git and searching for plans, picking one *randomly* and just start doing stuff. (!!?!?) ..

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3) it does feel marginally smarter, tho. Haven't found ANY real world tasks so far that it didn't know how to solve after letting it do its thing. I appreciate that it can dive extremely deep in a Sentry issue, pull relevant bits from two repos and prod db and then just "Fixed."

I feel like the greatest limitation is the Claude Code harness itself, it's just hands down the WORST available tool at the moment. Combined with ridiculous pricing and usage limits, Opus 4.8 won't be in my daily arsenal - gpt-5.5 is just better. But good for docs and plans! ✌️

First few 5h sessions w Opus 4.8: 1) Extremely annoying and hard to work with due to unpredictable behavior. Ask it to "load plan implementation skill", it loads it and then starts using git and searching for plans, picking one *randomly* and just start doing stuff. (!!?!?) ..

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2) It keeps doing EXTREMELY long preparing work, doing god knows what and all for seemingly ZERO extra benefit. Asked it to update the language to a 30 line skill (not a native speaker myself), it "almost done thinking" for 4 minutes (!!) and then wrote something shitty.

.. it also does the 4.7-style "let me think here and waste your tokens for 20+ minutes while getting ABSOLUTELY NOTHING DONE, then stopping or failing and eating all your tokens with ZERO results"-things quite often. I assume this is due to capacity issues.

First few 5h sessions w Opus 4.8: 1) Extremely annoying and hard to work with due to unpredictable behavior. Ask it to "load plan implementation skill", it loads it and then starts using git and searching for plans, picking one *randomly* and just start doing stuff. (!!?!?) ..

.. then when I give it a simple concrete task with a COMPLETE requirements, it keeps inventing new irrelevant things to ask and stopping for "Ready to build." I say "Note: not this, yes this. Do it." it replies "Ok, ready to build when you say so." 🤦‍♂️

Feeling vindicated bc I never took the time to learn cookiecutter properly, always kept manual template repos. Now I don't have to anymore; it's so fast to let GPT-5/low loose on a handwritten template repo and tell it exactly what you want 🎉 WKND project coming up!

Hands down the worst part of daily driving a finely customized Pi: going back to Claude Code feels like having to drive a Soviet Lada from the 80s 💀

I remember a time when Netflix had "share your logins with a friend" ads. Getting the same vibes with this Anthropic shit. They have enough corporate clients now to not care about smaller clients anymore. CC is now by far the worst harness but Opus 4.6 is still my fav model 🤷‍♂️

It's bonkers to think back how AI workflows have changed in the last couple of years. Getting a function to copy-paste felt awesome a year ago before CC era started. No I'm bummed when _some_ of the code produced by a 80 min agentic session is sub-par 🤯

Slopping w Claude, part n Me: hey Claude (Sonnet / High), wasnt this issue already solved? Claude: nope Me: properly recheck, what were the last commits about? Claude: related but didn't fix this Me: ok, fix it Claude, ~1h later: the PR wont merge bc main has the code already 💀