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Weekly recap

The week of September 28, 2026

115 stories from September 28, 2026 to October 4, 2026. Catch up in five minutes.

The big picture

arXiv limits researchers to two papers a month as AI drives submissions to a record

arXiv now limits every submitter to two papers a month and three active submissions at a time, starting October 1, 2026. The preprint server received a record 40,363 submissions in September, double the level of two years ago, which it partly blames on AI tools. Rejected papers count toward the limit. arXiv calls the rule a stopgap while it rethinks moderation.

Artificial Intelligence

Technology

Robotics

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