A while back I wrote this article : Comparing AI services–an objective analysis? –
https://blog.ciaops.com/2025/09/12/comparing-ai-services-an-objective-analysis/
I gave various AI services the same image prompt and this is the result
Copilot (default) – 75 seconds
Copilot (Think deeply) – 88 seconds
Copilot (Create infographic) – 100 seconds
Claude Sonnet 4.6 – 357 seconds
Gemini – Thinking [Nano Banana 2] – 54 seconds
Grok – Create image – 7 seconds
ChatGPT – 60 seconds