Artificial Intelligence(AI) ismore impressive than we think. There are at least a 1000 companies working on AI since it is a vast field and different AI is developed for different purposes. It's an experimental technology and will take years and a lot of failures to be successful.
In myopinion, the most efficient and impressive AI as of today can be found in video games. Games like DOOM or Football Manager have AI that is excellent at adapting to different playing styles of different players. Football Manager, for example, has AI that adapts to the player's tactics to make it harder to win. Other examples include the AI developed for the traditional Chinese Game 'GO' called AlphaGo which defeated the world's best GO player. It's updated version called AlphaGo Zero achieved superhuman levels when it defeated the original software 100-0.
Another impressive AI is Facebook's Bob and Alice AI that talked in a new language they created themselves. Then there's Sophia, arguably the most sophisticated robotic A.I.today. She might become the first humanoid AI and her AI code is currently being used to build more. The only problem with Sophis is thatshe is still not fully operational, which is why she's ranked 3rd in mymost impressive AI list.