zamabama

Same issue, on 20x Max plan for many months now. 1M context was available and working for months for me till about 2 weeks ago

This is actually a critical issue. I cannot function at all now on any project. They're all corrupting like this.

**Update: Additional debugging findings** I've narrowed down what triggers the "prompt is too long" error: - First prompt in a new session with 2 `@` file references (e.g., `@CLAUDE.md` and...

**Further update: Audio files may be the cause** Correction to my previous comment - the issue may be specifically with `@` referencing **audio files** (binary), not the number of references....

**Confirmed: Audio file `@` references are the cause** Removing the `@` symbols from the audio file references fixed the issue completely. The prompt works fine now. **Root cause:** `@` referencing...

> Found 3 possible duplicate issues: > > 1. [[BUG] claude with model sonnet[1m] doesn't work on a max 20x account #10219](https://github.com/anthropics/claude-code/issues/10219) > 2. [[BUG] Pro account switching to sonnet[1m]...