Error message
When this error occurs
defaults.model (or a per-run config_override.model) names a model the catalog doesn’t have. Usually
a typo or a stale id from an older integration — model ids look like anthropic.claude-opus-5.0.
Note this is raised while validating a thinking setting, because that is the first check that has to
resolve the model. A conversation with no thinking field can currently be created with an unknown
model id and fail later, when the run starts.
How to fix
CallGET /model-inference/models for the current list and use an id from it.