Inside Indian Institute of Technology Madras's largest research partnership: Anna University, Chennai

Behind Indian Institute of Technology Madras's research output sits a defining relationship: 556 co-authored works with Anna University, Chennai (India) in the five years to 2025, the university's single largest collaboration.

It anchors an unusually connected research base: 866 collaborating institutions across 75 countries, producing 21,559 joint works over the window, with international co-authors on 27% of output.

The collaborative work travels: its field-weighted citation impact stands at 1.83, where the world average is 1.0.

The Research Collaboration Index, the first global account of how universities actually collaborate, publishes its first full edition on Tuesday 15 September at 09:00 UK.

Every figure derives from the open global research record and is checkable at source.