Here are some of the most wellknown AI companies:

1、Google DeepMind (UK): A leading AI research organization that has developed several AI technologies, including AlphaGo and AlphaZero.
2、Microsoft AI (USA): Microsoft's AI research division, which focuses on developing AI technologies such as machine learning, natural language processing, and computer vision.
3、IBM Watson (USA): A division of IBM that specializes in AI research and development, with a focus on natural language processing, machine learning, and data analytics.
4、Facebook AI (USA): Facebook's AI research division, which focuses on developing AI technologies such as computer vision, natural language processing, and reinforcement learning.
5、Amazon AI (USA): Amazon's AI research division, which focuses on developing AI technologies such as machine learning, natural language processing, and computer vision.
6、NVIDIA (USA): A leader in AI computing hardware and software, with a focus on developing GPUs and AI platforms for applications such as deep learning and autonomous vehicles.
7、Baidu AI (China): A leading Chinese AI company that focuses on developing AI technologies such as natural language processing, computer vision, and autonomous driving.
8、Alibaba DAMO Academy (China): A research institute established by Alibaba Group to develop AI technologies such as machine learning, natural language processing, and computer vision.
9、Salesforce Einstein (USA): A suite of AIpowered tools and technologies developed by Salesforce to help businesses automate and optimize their operations.
10、Adobe Sensei (USA): A AI and machine learning framework developed by Adobe to power its creative cloud applications.
11、Uber AI Labs (USA): A research organization that focuses on developing AI technologies such as machine learning, natural language processing, and computer vision.
12、Apple AI (USA): Apple's AI research division, which focuses on developing AI technologies such as machine learning, natural language processing, and computer vision.
13、Tencent AI (China): A leading Chinese AI company that focuses on developing AI technologies such as machine learning, natural language processing, and computer vision.
14、Intel AI (USA): Intel's AI research division, which focuses on developing AI technologies such as machine learning, natural language processing, and computer vision.
15、Huawei AI (China): A leading Chinese AI company that focuses on developing AI technologies such as machine learning, natural language processing, and computer vision.

These companies are at the forefront of AI research and development, and are driving innovation in various industries such as healthcare, finance, transportation, and education.

Startups:

1、Nuro (USA): A selfdriving car startup that uses AI to develop autonomous vehicles.
2、Zoox (USA): A selfdriving car startup that uses AI to develop autonomous vehicles.
3、Clarifai (USA): A computer vision startup that uses AI to develop visual recognition and classification technologies.
4、UiPath (Romania/USA): A robotic process automation (RPA) startup that uses AI to automate business processes.
5、Element AI (Canada): A AI startup that focuses on developing AI technologies such as machine learning and natural language processing.

Research Institutions:

1、MITIBM Watson AI Lab (USA): A research collaboration between MIT and IBM to develop AI technologies.
2、Stanford AI Lab (SAIL) (USA): A research institution at Stanford University that focuses on developing AI technologies.
3、Carnegie Mellon University AI (USA): A research institution at Carnegie Mellon University that focuses on developing AI technologies.
4、University of Toronto AI (Canada): A research institution at the University of Toronto that focuses on developing AI technologies.

These are just a few examples of the many companies, startups, and research institutions working on AI technologies.