please add a perplexity api key alternative for the web search

[HarshDurgude]

[bpawnzZ]

If you look at the perplexity file in helper folder it is to use the perplexity online model. I believe that model is bring used in combination with duckduckgo search. Anyways just letting u know. I modified mine to use openrouters base URL and they host that perplexity model. Easy work around

[3clyp50]

Let's be savvy with API credits. There's no need to break the bank with the 20$ subscription, just 5 dollars. It's been a week, I've still got 4.57$ and I rely heavily on knowledge_tool. At this rate, they should last a good two months. Or do as @bpawnzZ suggests with OR.