["region:us"]
[{"name": "model", "dtype": "string"}, {"name": "conversation", "list": [{"name": "content", "dtype": "string"}, {"name": "role", "dtype": "string"}]}, {"name": "source", "dtype": "string"}, {"name": "tokens", "sequence": "int64"}, {"name": "token_count", "dtype": "int64"}, {"name": "model_category", "dtype": "string"}]