Here’s a list of some of the top companies in the field of artificial intelligence Please note that this landscape might have changed, and it’s always advisable to consult up-to-date sources.

1. OpenAI: Focused on ensuring that artificial general intelligence benefits all of humanity.
2. Google DeepMind: Specialized in neural networks and deep learning, responsible for breakthroughs like AlphaGo.
3. IBM Watson: Offers AI products and solutions across various industries, including healthcare, finance, and more.
4. Microsoft: Through products like Azure AI, they provide various AI-driven solutions.
5. Amazon Web Services (AWS): Offers machine learning services and supporting cloud infrastructure.
6. NVIDIA: Known for its GPU technology, which is extensively used in AI and machine learning computations.
7. Facebook AI Research (FAIR): Conducts research in areas of machine learning and artificial intelligence.
8. Baidu: China’s search engine giant also has extensive research in artificial intelligence and deep learning.
9. Alibaba Cloud: Offers AI-powered products and is heavily involved in the AI industry in China.
10. Salesforce: Provides AI-powered CRM solutions, allowing businesses to predict their customers’ needs more effectively.

These companies are leading in the field of AI, contributing through research, products, and services. If you are looking into partnership, investment, or other engagement, specific inquiries to the relevant departments in these companies would provide more tailored information.