Initializes the built-in planner.
Configuration options
Config for model built-in thinking features. An error will be returned if this field is set for models that don't support thinking.
Applies the thinking config to the LLM request.
The LLM request to apply the thinking config to
Builds the planning instruction (returns undefined for built-in planner)
Processes the planning response (returns undefined for built-in planner)
The built-in planner that uses model's built-in thinking features.