Cannot connect to Claude 4.5 through vertex AI

[rferrazd]

both options are failling:

vertex_client = instructor.from_provider( "vertexai/claude-sonnet-4-5@20250929", location="global" # Optional, defaults to us-central1 )

vertex_client = instructor.from_provider( "vertexai/claude-sonnet-4-5, location="global" # Optional, defaults to us-central1 )

ERROR MESSAGE:

404 NOT_FOUND. {'error': {'code': 404, 'message': 'Publisher Model `projects/sonic-aria-0000000000-00/locations/global/publishers/google/models/claude-sonnet-4-5` not found.', 'status': 'NOT_FOUND'}} None

</failed_attempts>