GPT-5.4 and Nanobanana Pro for real workflows
GPT-5.4 is provided by OpenAI and emphasizes extended context and superior reasoning. Nanobanana Pro, from Google, emphasizes up to 4k and sharp text. The stronger option depends on the input, output constraints, and review standard.
How to test GPT-5.4 vs Nanobanana Pro
Run the same prompt, source context, output format, and acceptance criteria through both models. Score accuracy, instruction following, edit time, latency, and current cost separately. Repeat the test on several representative tasks before standardizing on either model.