[Bug] In-session effort level changes not persisting when CLAUDE_CODE_EFFORT_LEVEL env var set
Status Open
Reported on v2.1.251
Maintainer reply None cached
Activity 0 comments · opened Aug 28, 2026
Bug Description
Looks like in session efforts are not being captured. I'm trying to swap from high to medium for Fable and it sticks on high. I do have this in my local .zshrc file which could be affecting it but this is the first time I've seen this:
export ANTHROPIC_MODEL=sonnet # Setting the default effort to use export CLAUDE_CODE_EFFORT_LEVEL=high
Environment Info
- Platform: darwin
- Terminal: tmux
- Version: 2.1.251
- Feedback ID: fee11978-f074-4f57-810e-611933282c22
Errors
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