OpenAI's latest update to its API has introduced a groundbreaking feature: Functions. In essence, these functions ensure that responses to API calls follow a sp

OpenAI's latest update to its API has introduced a groundbreaking feature: Functions. In essence, these functions ensure that responses to API calls follow a specific JSON structure, a capability that opens up numerous possibilities, such as interacting with other APIs, converting natural language into API calls, and extracting structured data from text. Such advancements in technology often mean other tools become less relevant or even obsolete. This time, it seems LangChain and Llama Index are the ones being left behind. However, it's not all roses. The introduction of functions comes with its own set of costs and challenges that users should be aware of.