# What is Bittensor?

Bittensor is a AI-driven blockchain for storing and using datasets, and is a protocol for decentralized subnets that produce decentralized intelligence. Each subnet is a incentive-based competitive marketplace operating to produce the best decentralized intelligence. For instance, the prompts subnet rewards miners producing the most valuable responses to prompts sent by the subnet's validators. 

Once you've understood the full power of subnets and their incentives, you'll have understood the role of Bittensor and the $TAO token.