Switching from Claude to Codex

Claude Code, which used to burn through 100 million tokens a day, is now unusable.
Spending 2 million won per month, things that used to work before don't work now.

I've switched to Codex.
Its codebase comprehension is overwhelming. It understands instructions precisely, with almost no duplicate coding.
Even quite large-scale refactoring gets done in one go. This is really difficult stuff, but it 'just works'.

There are downsides too.
It's verbose. Reading through the post-work reports takes some time.
And MCP doesn't work. So I'm using it by connecting MCP to Claude Code, then using system prompts to teach it how to use Claude Code.

'Mobile vibe coding' is possible too.

Connect Github with ChatGPT, access ChatGPT, select repo and branch in the Codex tab, give commands, and it automatically creates branches, does the work, and even submits PRs.
Using Github Codespaces, you can even spin up a web server in development mode on mobile and access it.

Don't skimp on money for tools that make you money.
If you're obviously going to hit limits, even the most expensive plan becomes meaningless.

+) The Arc browser and Github Codespaces combo is insane.

Bezelless design browser + web VScode - it's hard to tell the difference from a regular VScode desktop application.
Even when devices keep changing, the development experience remains continuous.
Arc browser even shares tabs, so you don't feel like you're on a different PC.

And a new model came out today too. Probably got even better? Looking forward to it