With strong AI, machines can actually think and carry out tasks on their own, just like humans do. With weak AI, the machines cannot do this on their own and rely heavily on human interference. ... They can process and make independent decisions, while weak AI-based machines can only simulate human behavior.
Weak AI will need much more input from a human. This means that it will not be able to complete some tasks without human assistance. A strong AI is the complete opposite to this. Strong AI's can complete many tasks on their own without the need of human assistance.