CNET's best overall pick for AI image generators is Google's Nano Banana models. These Gemini AI models are scarily good at creating ultrarealistic images, as well as images featuring heavy swaths of text. They come prebaked with Google's SynthID, an invisible watermark that proves it's AI-generated. You can create for free in the Gemini chatbot, but upgrading to Google's paid subscriptions gives you higher generation limits. If you're a regular ChatGPT user, you may be best off staying inside OpenAI's ecosystem rather than pivoting to another service. The company's latest model, ChatGPT Imag