[BUG] 5-hour usage limit exhausted after ~40 minutes of light use on Max 20x

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?

The 5-hour usage window appears to have changed again. On a Max 20x plan I reached the limit roughly 40 minutes into a fresh 5-hour window, from a single terminal session doing routine work — no parallel sessions, no large-scale refactoring.

That leaves the remaining four-plus hours of the window unusable, which is difficult to reconcile with the plan's price point.

What Should Happen?

A Max 20x plan should sustain a normal working session across a meaningful portion of the 5-hour window. If the limits have been adjusted, the change should be documented and communicated in advance.

Error Messages/Logs

Steps to Reproduce

1. On a Max 20x plan, set the model to Opus.
2. Start at the beginning of a fresh 5-hour window and work in a single terminal session on routine tasks.
3. Observe the 5-hour limit being reached approximately 40 minutes in.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.119

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_