[BUG] This is not the opus 4.5 released some time ago

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Getting way way dumber over time

What Should Happen?

The old opus used to be methodical and had some sense of intelligence, recently it's just plain dumb. I have to sit and spoon feed how to write code

Error Messages/Logs

Steps to Reproduce

Just ask it to debug anything, creates more mess than fixing anything

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.12 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_