I tested Nano Banana 2.1 against ChatGPT, and it was close
TechRadar
Read the full articleGoogle upgraded its Nano Banana AI image generator to version 2.1 within Gemini, aiming to improve detail, instruction-following, and consistency. A side-by-side test against OpenAI's ChatGPT Images 2.5 showed both produce high-quality, photorealistic images with different artistic styles, indicating a close competition in AI image generation capabilities.

