[BUG] Error: Claude Sonnet 4.5 - 400

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?

Error Details

Model: Claude Sonnet 4.5
Provider: anthropic
Status Code: 400

Error Output

{"type":"invalid_request_error","message":"Your credit balance is too low to access the Anthropic API. Please go to Plans

API Limit is not reached:

<img width="429" height="281" alt="Image" src="https://github.com/user-attachments/assets/a5229331-c564-4b01-9352-b7bb39d0a21e" />

What Should Happen?

No API Error 400

Error Messages/Logs

Steps to Reproduce

Use the API, error gets thrown

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.31

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_