Inside The University of Osaka's largest research partnership: The University of Tokyo
Behind The University of Osaka's research output sits a defining relationship: 4,221 co-authored works with The University of Tokyo (Japan) in the five years to 2025, the university's single largest collaboration.
It anchors an unusually connected research base: 1,110 collaborating institutions across 79 countries, producing 46,791 joint works over the window, with international co-authors on 24% of output.
The collaborative work travels: its field-weighted citation impact stands at 1.86, where the world average is 1.0.
The Research Collaboration Index, the first global account of how universities actually collaborate, published its first full edition on 15 September 2026. The full results are public.
Every figure derives from the open global research record and is checkable at source.
For universities
The GRP Partnership Intelligence Platform
Your university beside the peers you choose, across both GRP indices: the universities and companies your peers work with that you do not, live funding calls matched to your strengths, the EU projects your peers have won, and a brief ready for your executive. A partner service for universities from Monday 19 October 2026: enquire, and the GRP team will confirm availability and pricing for your university.