[BUG] False "API Error: Extra usage is required for 1M context" despite I only use sonnet standard model

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?

Just after login, when I ask something to claude I get "API Error: Extra usage is required for 1M context". The only way to bypass this error is to log with the command "claude sonnet" (that will tell me that I already use sonnet).

What Should Happen?

I should be able to use claude with the command "claude" when I just want to use the standard default model.

Error Messages/Logs

API Error: Extra usage is required for 1M context · run /extra-usage to enable, or /model to switch to standard
     context

Steps to Reproduce

Open CMD or powershell window
type claude
login if necessary
ask anything to claude

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude Code 2.1.131

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_