[BUG] Sonnet model consuming both "All models" AND "Somente Sonnet" limits

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?

Bug: Sonnet model consuming both "All models" AND "Somente Sonnet" limits

Description

When using only Sonnet model in Claude Code CLI, both usage limits are being consumed:

• "All models" limit (which should exclude Sonnet)
• "Somente Sonnet" limit

This appears to be incorrect billing/tracking behavior.

Expected Behavior

Using Sonnet should only consume the "Somente Sonnet" quota, not the "All models" quota.

Actual Behavior

Both quotas are being consumed simultaneously when using Sonnet.

Evidence

| Limit | Usage | Reset |
|-------|-------|-------|
| All models | 37% | Monday 18:00 |
| Somente Sonnet | 22% | Tuesday 09:00 |

I have only been using Sonnet model, yet "All models" shows higher consumption than "Somente Sonnet".

Environment

• Product: Claude Code CLI
• Plan: Claude Max
• Model used: Sonnet only
• OS: Windows/WSL2

Steps to Reproduce

1. Use Claude Code CLI with default Sonnet model
2. Check usage limits in account dashboard
3. Observe both "All models" and "Somente Sonnet" being consumed

Additional Context

Screenshot attached showing the dual consumption issue.

<img width="640" height="426" alt="Image" src="https://github.com/user-attachments/assets/a676732f-2c0f-4250-917b-eb4f90fb0e7e" />

<img width="1098" height="267" alt="Image" src="https://github.com/user-attachments/assets/bd031e37-4fcb-40ce-b394-18d6fd5997ed" />

What Should Happen?

Using Sonnet model should ONLY consume the "Somente Sonnet" quota, not the "All models" quota. These should be separate limits.

Error Messages/Logs

Steps to Reproduce

1. Open Claude Code CLI (v2.0.71)
2. Use only Sonnet model (default) for any task
3. Check usage limits in account dashboard at https://console.anthropic.com
4. Observe that BOTH "All models" AND "Somente Sonnet" limits are being consumed
5. Expected: Only "Somente Sonnet" should be consumed when using Sonnet

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

v2.0.71 - Sonnet 4.5

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_