The main concern of Artificial Intelligence is with understanding the hidden patterns in Big data resulting in autonomous machines whereas blockchains have the primary concern with accurate records management, security and relevance. Data sharing is the first benefit of blockchain for AI.
As AI is associated with data, blockchain becomes a gateway that leads to secure data transfer over the internet. A lot of processing time is what it saves between the points where the data is evolved and evaluated. Self-operating devices have autonomous nature, therefore, needs secure inter-device communication, one of the other problems that blockchains can solve.