Yes, we can integrate selectors into our router query engine. We can either use LLM selectors or Pydantic selectors (currently only supported by gpt-4-0613 and gpt-3.5-turbo-0613 (the default)).

Refer the sample code :

query_engine = RouterQueryEngine(

selector=PydanticSingleSelector.from_defaults(),

query_engine_tools=[

simple_tool,

single_step_tool,

multi_step_tool,

sub_question_tool,

],

)

Hope it answers your question :)