# The 80% Problem in Agentic Coding

DevFeed: [The 80% Problem in Agentic Coding](<https://devfeed.tech/articles/the-80-problem-in-agentic-coding-18060.md>)

Original publisher: [Read original article](<https://addyo.substack.com/p/the-80-problem-in-agentic-coding>)

Author: Addy Osmani

Published: 2026-01-28T17:20:53Z

Content type: opinion

Language: en

Sources: [Elevate](<https://devfeed.tech/sources/elevate.md>)

Topics: [ai-coding](<https://devfeed.tech/topics/ai-coding.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [coding](<https://devfeed.tech/topics/coding.md>), [Claude Code](<https://devfeed.tech/topics/claude-code.md>)

Tags: [agentic](<https://devfeed.tech/tags/agentic.md>), [agentic-coding](<https://devfeed.tech/tags/agentic-coding.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ai-coding](<https://devfeed.tech/tags/ai-coding.md>), [architecture](<https://devfeed.tech/tags/architecture.md>), [bugs](<https://devfeed.tech/tags/bugs.md>), [claude-code](<https://devfeed.tech/tags/claude-code.md>), [coding](<https://devfeed.tech/tags/coding.md>), [developers](<https://devfeed.tech/tags/developers.md>), [models](<https://devfeed.tech/tags/models.md>)

## AI overview

The article argues that AI-assisted coding has shifted from completing roughly 70% of a task to handling 80% or more for some new or personal projects. It says the main difficulties have changed from syntax errors to conceptual failures, including unchecked assumptions, confusion, inconsistencies, and architecture built on faulty premises. The author emphasizes that this shift is less applicable to large or existing applications and team-based work.

## Source excerpt

Managing comprehension debt when leaning on AI to code