LangSearch

LangSearch is a web search API and semantic rerank API purpose-built for LLM applications that need to go beyond their training data. When your AI assistant needs to know what's happening in the world right now, LangSearch connects it to billions of web documents — delivering clean, accurate, and high-quality context that actually makes a difference.

It supports natural language search with rich details spanning news, images, and videos. Under the hood, LangSearch combines a hybrid search database with a semantic reranker, supporting both keyword and vector searches. The advanced LangSearch Ranker Model further boosts result accuracy, so your AI always gets the most relevant, up-to-date information to work with.