LangChain Perplexity Skill

Expert assistance for langchain-perplexity: Perplexity AI integration for LangChain. The key differentiator is ChatPerplexity — a chat model with real-time web search built in at the model level, plus domain filtering, date filtering, and reasoning model support.

Install: pip install -U langchain-perplexity
Setup: export PPLX_API_KEY=your_api_key

Reference: references/api.md (500 KB — full API reference).

When to Use This Skill