Context Anxiety in Kiro: Claude Opus 5 at 30% Usage
· 7 min read

Kiro's context usage meter read 30% while Claude Opus 5 told me in the same chat that it had no room left to work with. Kiro measured the real usage. The model estimated its own remaining context, and the estimate was wrong by a wide margin. The behavior has a name, "context anxiety", and both a production write-up and a peer-reviewed paper describe it.
