LONDON (Reuters) -Jeff Bezos’ personal firm Bezos Expeditions is leading a $72-million investment in artificial intelligence data solutions company Toloka, which is looking to scale up its business, Toloka told Reuters on Wednesday. Toloka, which helps train and evaluate AI models using a network of human experts and testers, is part of Nasdaq-listed AI infrastructure firm Nebius Group and has worked with Amazon, Microsoft and Anthropic.