I built a 500K LOC production app alone in 7 months. Here is the proof
Here is the proof, a 5-hour uncut live session, no edits, no cuts: https://youtu.be/VPrU8WZJOVs Full article: https://medium.com/@bonjourjoel/i-built-a-500-000-line-produ... I believe I am the first human to have done this in a documented, verifiable way: maintaining a stable production-grade 500,000-line TypeScript codebase as a solo developer, using an AI coding assistant I built myself. If you know someone who has done the same, one person, 500k lines, documented proof, please write their name in the comments.
I built a 500K LOC production app alone in 7 months. Here is the proof launched on May 10, 2026 with 5 votes, #2,008 of 20,538 launches that month and more than 75% of that year's launches.
Does a similar job
all alternatives →
WOZCODEMay 2026 · wozcode.com · ▲194For the last year we've been building an AI mobile app builder. Last week we decided to generalize our agent harness and benchmark it against vanilla Claude Code. Turns out the tools we built for app building were significantly more efficient than the native Claude Code tools. When we ran benchmarks we beat Claude code on speed (~40% faster) , cost (25-55% cheaper) and performance (+17% on Terminal Bench 2.0). Today we're making our agent harness publicly available as a Claude Code plugin. Use code WOZCODE1 to try it for $1 at wozcode.com
FoundersWall2025 · founderswall.com · ▲35I used to be just a blogger. Now I build internet products, still without code, using AI, design, and taste. I was building in public on X for last 2 months. And honestly, I got tired of how it became performative and started to feel fake. I shipped 2 products. Both failed to get any real traction. I kept sneaking into popular builders’ profiles, hoping to learn how they do it. One thing I kept seeing everywhere, product launch directories. I thought here is the scope. So I started building one. Same UI like the rest. Nothing special. Suddenly one day when it was half built, I realized…
Codemaxxed – 350M+ LOC and a GitHub cease and desistApr 2026 · github.com · ▲5Built this code art project as a commentary on the recent wave of using LOC as a primary measure of engineering productivity It's now up to 350M lines of useless (but hopefully funny) code, constantly growing using GitHub actions and https://github.com/jshchnz/codemaxxing Unfortunately, GitHub has now sent me a notice to remove the repo within the next 14 days, so enjoy it while you can
- IMI'm a non-hacker "idea guy" and my weekend project took 1,670 + days2012 · readwriteweb.com · ▲21
I am a non-hacker "idea guy" with zero discernible talent. Like most, the story starts with me doing things the hard way. I dreamt of a tool that would save me countless hours. Like most of my ideas, it was supposed to die in a couple of hours, but this one had some legs.... "If I needed this, surely others did too" kept looping in my head. Could I get this built? Could I build it myself? Nah...too lazy to learn how, but before I did anything, I had to promise myself one thing: No more ideas! If ideas were sit-ups, I would have a six pack instead of this tire. It was a constant mental…
- FPFirst project and lessons learned2011 · ▲22
A little background. For the last 1.5 years I lost what could be considered an embarrassing amount of money hiring other people to work on a project that I thought had potential, I got some important people involved, had some great coders, but couldn't launch. The failure was depressing, rejection by YC didn't help.. I had to take a job, I didn't enjoy and I had a girlfriend who stood by me despite going into debt. But bouncing back over the last 45 days I've taught myself Rails some Jquery, and Javascript and built this www.hangout.io. It's empowering to build something myself because I'm…
- MPMy programming language, building in public for 1 year2022 · petersaxton.uk · ▲7
My weekly(ish) video logs tracking my progress of building a completely sound statically typed language and structural editor. The motivation is to make lots of invalid programs unrepresentable.
More ai this month
the category →



Paintings by AI models: programs run through a simulation of oil paint.
AI · 22d ago · stillwet.art

FastRouter.ai▲364Route requests to the right LLM for cost, latency & quality
AI · 23d ago · fastrouter.ai
Source: Show HN post ↗
Launched alongside, May 2026
the whole month →

Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai



Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
Life & fun · May 2026 · github.com

🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md
Dev tools · May 2026 · github.com