Even after the release of GPT4o, Perplexity Pro with Claude 3 Opus is by far my most used LLM application. For me, the writing quality of Claude 3 combined with a wider variety of information sources makes it far surpass raw ChatGPT for most non-creative/non-interactive tasks.
I recommend Phind.com, it’s been much better and faster for me than Perplexity Pro. I typically use their custom 70B model but you can also use GPT4 o or Turbo, or Claude 3 Opus.