I use GPT4 for brainstorming fiction ideas, reading technical papers together, and doing therapy-y roleplay (e.g. by telling it to ask me questions about my current career decisions and then roleplay as my 70 year old self who regrets my current career decisions).

I value being able to occasionally voicechat with GPT4, which Claude Opus cannot do, so Claude Opus would have to feel more than 5% better for me to switch over.

I will almost certainly have interacted with Claude Opus for over 3h by mid-April when this market closes.