instead of a prefix. See Appendix B for details.
5 Open-Source Routers: Experimental Setup
To evaluate efficacy of confounder gadgets generated using the method from Section 4, we perform experiments with
several LLM routers. This section explains our experimental setup for the open-source routers proposed in the research
literature [47]; results of this evaluation appear in Section 6. In Section 7, we discuss experiments with proprietary,
commercial routers. Figure 3 shows the summary of our experimental setup.
6