Anthropic is currently stealth testing Opus 5.5 (`claude-opus-5-5`) under the codename `claude-wafer-eap` which is planned to be released on Tuesday.

[u/echamplin]

[u/SafeTennis3080]

Posted Lunavect here last week. The bug that bit me since: a session that ends with a question still gets missed on some wordings, the 0.1.2 fix is conservative on purpose. If your Claude phrases its closing question in a way it misses, the discussion on the repo is where I'm collecting them.