ACL 2027 opens submissions, picks LLM homogenization theme

The Association for Computational Linguistics has opened submissions for ACL 2027 and named 'Homogenization and knowledge collapse in LLMs' as its special theme, per the main conference call. The ARR submission deadline for both long and short papers is January 4, 2027, with the conference itself running August 20-22, 2027 after tutorials on August 17 and workshops on August 18-19.

Paper formats are standard: long submissions at 8 pages, short at 4, each gaining one extra content page in the accepted version. Review runs through ACL Rolling Review before a commit step to the conference, with dual submissions prohibited and double-blind maintained.

The theme framing is unusually direct for a CFP. 'Recent research suggests that, despite their impressive capabilities and broad applicability, LLMs tend to collapse diversity in their outputs,' the call states, inviting papers investigating 'whether LLMs produce low-diversity responses, rely on repetitive linguistic structures, and converge on a narrow set of solutions.' Two of the researchers we track had already circulated the page.