GPT-5 style router, but for any set of LLMs

GPT-5 launched today, which is essentially a bunch of different OpenAI models underneath the covers abstracted away by a real-time router. Their router is trained on preferences (not just benchmarks). In June, we published our preference-aligned routing model and framework for developers so that they can build an experience with the choice of models they care about.

Sharing the research and project again, as it might be helpful to developers looking for similar tools.