What's the most useful AI tool you've actually used?

There's a lot of AI hype out there, but which tools genuinely save you time or make life easier?

Do you use AI for:

• Writing
  
• Coding
  
• Images
  
• Research
  
• Work productivity
  
[*]Something else?

What tool has impressed you the most?

I make use of ChatGPT for research work and generating contents for my social media marketing job. I make if it Canva AI for graphic design work and they work well for me.