What is the largest project you have vibe coded on your own?
Posted by David Wood in the Vibe Coding is Life group on October 9, 2026.
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The poster asks members for the largest project they have vibe coded alone, and says his biggest is around 1.3 to 1.4 million lines of production code, with five more between 80 thousand and 300 thousand lines. The thread drew 81 comments. The most liked reply argues that line count is a poor measure of quality, and others ask how many lines are comments or whether models hit context limits at that size.
The post
What's the largest project you've vibecoded by yourself? For me I have one that's probably 1.3 - 1.4 million lines of production code at this point and a 5 more that are 80k-300k lines of code.
Why it landed
- It gives a concrete number up front, which invites members to compare their own projects.
- The claim is large enough to be challenged, and the pushback became the most liked reply.
- It touches a question many builders have: how big can an AI built project get.
The best answers from the thread
Measuring the lines of code as some sort of measure of quality or productivity or complexity is like measuring the sawdust of a carpenter building a house. A very bad carpenter will generate a ton of waste and sawdust.
How many of those lines are comments...
I've never gone over 20k or so but mine aren't very complex. Did you run into model context issues at a certain size?
What to take from it
- Do not use lines of code as your headline number. The top reply says more code can just as easily mean waste as value.
- Say what the project does and who uses it. That is the detail members asked about.
- If you build large, expect questions about model context limits as the codebase grows.
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