Hi Candidate,

Before proceeding to the best AI Companies in the world, let me tell you about AI- Artificial intelligence (AI) refers to the simulation of human intelligence in machines that are programmed to think like humans and mimic their actions. The term may also be applied to any machine that exhibits traits associated with a human mind such as learning and problem-solving.

The best AI Companies in the world are- Space X which uses the Artificial Intelligence technology for Rocket science, Tesla Motors, Google Alphabet, Microsoft Analytics etc.

Hope that this answer helps you.