[BUG] API Error: 500

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?

Keep getting API Error: 500 for all the models, for past 30 mins.

❯ /model
  ⎿  Set model to sonnet (claude-sonnet-4-5-20250929)

❯ what's next?
  ⎿  API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CY12mNsozHHXqABNrHSQa"}

❯ /model
  ⎿  Set model to haiku (claude-haiku-4-5-20251001)

❯ what's next?
  ⎿  API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CY12ohx5s6iQUGFqsAV2h"}

❯ /model
  ⎿  Set model to Default (Opus 4.6 · Most capable for complex work)

❯ what's next?
  ⎿  API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CY12r8Q4UzrDys43grqWz"}

What Should Happen?

No Internal errors

Error Messages/Logs

Steps to Reproduce

prompt: what's next?

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

2.1.38 (Claude Code)

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Other

Additional Information

_No response_