Nano Banana 2 is Google's Gemini 3.1 Flash Image model, which generates and edits images from a prompt and reference images. It costs the same per image as the newer Nano Banana 2.1 and less than Nano Banana Pro.
Pick it if
you want the default image face, with conversational edits of an image
you need up to five characters kept consistent in one workflow
you need legible text or translated text inside the image
Skip it if
the newer Nano Banana 2.1 at the same price covers your work
complex scenes need Nano Banana Pro's higher reasoning
GPT Image 2 is OpenAI's image model for generating images from a prompt and editing supplied images, including inpainting. Per image it costs more than Nano Banana 2 and FLUX 3 here, and less than Nano Banana Pro.
Pick it if
you want text-heavy visuals: diagrams, infographics, charts, posters, comics
you need multilingual text rendered inside the image
you edit supplied images, including inpainting
Skip it if
you need 4K output; OpenAI states resolutions up to 2K
a cheaper face such as FLUX 3 or Ideogram 4 covers your work
FAQ
Which is cheaper, Nano Banana 2 or GPT Image 2?
Nano Banana 2 is cheaper — $0.12 / image vs $0.13 / image.
How do I use Nano Banana 2 or GPT Image 2?
In Octomind Cloud on a paid plan, ask the agent to generate with either model by name; it runs the job and returns the file.
Try either model
Switch between models inside the same Octomind session.