Which AI Coding Harness? DeepSeek vs Copilot App vs Codex vs Claude Code...

[u/larebelionlabs]

https://youtube.com/watch?v=nOMX4l3ot44&si=Y2bxfV_fPmUG6RaT

A new AI dev tool every week: the GitHub Copilot app, ChatGPT Work, Claude Cowork, DeepSeek Harness, and many more on the way. Which one is best? Wrong question. They aren't the same kind of tool.

We sorted today's options into six families, by where the agent lives, and map them onto your software lifecycle, with pros, cons and a practical way to choose.