Code Academy offers a range of free AI courses on its online platform, as well as paid courses. This hub will provide a good overview of the courses on offer. 

Free courses include: -  

• Introduction to LLMs 

• Learning the role and impact of generative AI   

• Introduction to generative AI  

• Introduction to chatGPT 

• Learn explainable AI  

• Optimising code with generative AI  

Link: AI course catalogue 

Source credibility:  

Code Academy are an online learning platform that sells coding courses. They do offer free courses as a way to attract and build a student base.