AI4Bharat is a research lab at IIT Madras which works on developing open-source datasets, tools, models and applications for Indian languages. Over the past few years, the lab has done cutting-edge work in Indian language technology, which has been published in top conferences around the world. Some of the top contributions from the lab are IndicCorp, BPCC, Shrutilipi, Kathbath, IndicBERT, IndicTrans, IndicXlit, IndicWav2Vec, IndicWhishper, and TTS.