The AI researchers leaderboard has been withdrawn
Ranking authors by publication volume per OpenAlex author id measures name disambiguation more than research output. Common names merge many distinct researchers into a single record and take every top slot, while OpenAlex also registers organizations, patent-assignee placeholders and even AI models as authors. We removed the non-people, and the remaining ranking still did not describe anyone real, so we stopped publishing it rather than present a number we would not stand behind.
For current data, use Top Institutions or Citation Velocity.
/api/research/authors still responds, and carries the same status in its data_quality field.
Bringing it back means changing what is measured, not tuning a threshold. Citation impact among recent AI authors is the obvious candidate. Until then, institution-level output is the reliable view of who is producing AI research, and it is updated daily.