@inproceedings{zhang-etal-2026-mtrouter,
    title = "{MTR}outer: Cost-Aware Multi-Turn {LLM} Routing with History{--}Model Joint Embeddings",
    author = "Zhang, Yiqun  and
      Li, Hao  and
      Wang, Zihan  and
      Feng, Shi  and
      Yang, Xiaocui  and
      Wang, Daling  and
      Zhang, Bo  and
      Bai, Lei  and
      Hu, Shuyue",
    editor = "Liakata, Maria  and
      Moreira, Viviane P.  and
      Zhang, Jiajun  and
      Jurgens, David",
    booktitle = "Proceedings of the 64th Annual Meeting of the {A}ssociation for {C}omputational {L}inguistics (Volume 1: Long Papers)",
    month = jul,
    year = "2026",
    address = "San Diego, California, United States",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-acl/2026.acl-long.2045/",
    pages = "44206--44226",
    ISBN = "979-8-89176-390-6"
}