According to CoinMeta, LangChain announced the completion of a $300 million Series C financing round, raising its valuation to $3 billion. This round of financing was led by CapitalG, a subsidiary of Google's parent company Alphabet, with participation from institutions such as Singapore's sovereign wealth fund GIC. LangChain initially gained popularity by developing an open-source framework AI that helped developers connect large models to databases, search engines, and external tools. As model manufacturers begin to offer their own agent development tools, these basic functions have become increasingly easy to implement. LangChain continues to expand its business on its commercial platform LangSmith, mainly addressing the challenges companies face in managing AI agents in practical work. Over 7,000 organizations are already using LangSmith, including NVIDIA, Toyota, and Salesforce.