arXiv's strictest new rules! Maximum 2 submissions per person per month, rejected papers don't refund quota

What happened: arXiv introduced a limit of two submissions per person per calendar month across all categories, effective October 1, 2026. Rejected papers still consume quota, and switching categories does not reset it. Key numbers: 40,363 submissions in September 2026, up from 20,569 in September 2024 Why it matters: arXiv cites a surge in low-quality, thin, salami, and AI-assisted papers that consume disproportionate reviewer time and delay other submissions. Officials describe the rule as a temporary rate limit while they reassess sustainable submission rates and upgrade review tools.

arXiv introduced a limit of two submissions per person per calendar month across all categories, effective October 1, 2026. Rejected papers still consume quota, and switching categories does not reset it.

arXiv cites a surge in low-quality, thin, salami, and AI-assisted papers that consume disproportionate reviewer time and delay other submissions. Officials describe the rule as a temporary rate limit while they reassess sustainable submission rates and upgrade review tools.