This session will showcase Pl@ntNet, a participatory platform for collecting plant occurrences data thanks to artificial intelligence. Initiated in 2009 by four research organizations, the platform has been a great success and has now become one of the largest participatory observatories in the world. The quality of the data produced has been greatly improved in recent years and their high frequency is a major asset for monitoring plant biodiversity at very short time scales. In this pitch, we will present concrete use cases as well as ongoing research work based on the collected data. We will also present a number of initiatives and testimonies from users of the platform in the fields of natural area management, education, tourism and agriculture. We will end our session with a presentation of the platform's business model and the relevance of such a participatory platform for the Post-2020 Global Biodiversity Framework.