3 days ago
Developer Deletes 70% of AI Code After Losing Understanding
A developer used AI to help write a software project for three months.
The AI helped him add features quickly.
Later, he needed to make a big change to the project.
He realized he did not understand how much of his own code worked.
Because of that, he deleted about 70 percent of the AI-generated code.
He then rewrote it himself in two weeks.
The new code was about half as large and easier for him to understand.
Some people said this shows that developers must understand the code they use.
Others said AI can explain and fix code, even when the developer did not write it personally.
The original story came from user-generated content and was not independently verified.
A developer deleted about 70% of a project built over three months with AI tools.
The developer used ChatGPT, Claude and Copilot to generate code and ship features quickly.
A major feature exposed that he could not confidently trace or explain his codebase.
He rewrote the code in two weeks, producing a codebase about half the original size.
The unverified account has renewed debate over the risks and benefits of vibe coding.
- Who
- An unnamed developer, along with users discussing the experience online.
- What
- The developer deleted about 70% of an AI-generated codebase and rewrote it after struggling to understand it.
- Where
- The account originated on Reddit and was later reshared on X.
- When
- The report was published and last updated on August 30, 2026.
- Why
- The developer could not confidently trace the project’s logic or make a major feature change.
Vibe Coding Requires Developer Understanding
AI Can Manage Unfamiliar Code
Code ownership
Vibe Coding Requires Developer Understanding
Developers should understand and be able to explain the code they maintain; otherwise, they may be renting rather than owning the codebase.
AI Can Manage Unfamiliar Code
Developers regularly work on legacy or inherited code they did not create, and AI may help them navigate and modify it.
AI-generated complexity
Vibe Coding Requires Developer Understanding
AI-generated code can be difficult to follow, produce excessive lines and obscure how data flows through a project.
AI Can Manage Unfamiliar Code
AI can explain unfamiliar code and help fix issues through an ongoing conversation, potentially making extensive understanding less necessary.
Value of fundamentals
Vibe Coding Requires Developer Understanding
Programming fundamentals remain essential because developers must understand the logic behind AI-generated implementations.
AI Can Manage Unfamiliar Code
Some users argued that the developer’s experience was avoidable or unconvincing because AI could have been asked to explain the code.
Key facts
- Project duration
- Three months of AI-assisted development
- Code deleted
- About 70% of the project
- AI tools used
- ChatGPT, Claude and Copilot
- Rewrite duration
- Two weeks
- Final code size
- Roughly half the size of the original
- Central debate
- Whether speed from vibe coding outweighs the difficulty of understanding and maintaining AI-generated code
- Verification status
- The developer’s claims were not independently verified by News18
Quotes
A Reddit commenter
A user commenting on the reported developer’s experience
“This is genuine issue, whatever code is generated by llm it is very difficult to understand the logic. We not able to figure out how data is flowing. It also generate huge line of codes, it become very frustrating to understand each line of code. We have to figure out something.”
news18.com
“This is the hidden cost of vibe coding. Fast to ship, expensive to own. If you can’t explain a line, you don’t own the codebase. You just rented it from the model.”
news18.com
Sources
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