Recently I started using Claude because it's finally giving good code results. Also, it allows file uploads - for free, unlike ChatGPT which requires the paid plan. As a result of these two things, I've made the switch to Claude (at least for now). Looking forward to ChatGPT 5 whenever that it is.
UPDATE 5/4/2024
Claude continues to impress for coding. ChatGPT no longer my ‘go to’ LLM.