What are the main differences between the Audi A7 and A8?

I'm considering between the Audi A7 and A8 but I'm not sure which one would be a better fit for me. Can you please explain the major differences between the two models?

Both Audi A7 and A8 are luxurious sedans with powerful engines and advanced technology features. However, the A8 is larger and offers more interior space, while the A7 has a more sleek and sporty design.

In terms of performance, the A8 has a wider range of engine options including a hybrid and a high-performance V8. The A7, on the other hand, offers a more efficient and responsive driving experience with its standard V6 engine.