The next version of Nano Banana aka Nano Banana Pro is now available in both Gemini and Google AI Studio. It is the most capable AI image generator I am aware of, surpassing its own previous launch, Nano Banana, which was already superior to OpenAI's state-of-the-art image generator. Although the price per image is quite high (if you are using it over it's API), I think it's fair given the accuracy of the output in response to the prompt. It can also generate large amounts of text in images without any problems.