I've been running Codex and Claude Code side by side all day. Each has one major problem.
I've been running out of Claude Code tokens on the $200 plan, so I decided to dive into Codex for active development. I've been running 5+ parallel coding tasks pretty much all day. I also make heavy use of each harness's Chrome extension for web development loops, where the AI can review the results of its own changes and iterate.
Here are my conclusions:
CC and Codex are both reliable and pretty similar in quality, except each has one major problem the other doesn't.
CC issue: Claude-in-Chrome seems to have a serious memory leak. It constantly crashes Chrome, and sometimes my whole machine, if I don't kill it fast enough. I'm also running out of tokens every Thursday now, even without using Fable.
Codex issue: It's horrible at frontend design. In this area, Claude Code feels like a senior developer with an eye for design, while Codex feels like an intern with basically no design sense at all.

